微流道尺寸及設計對於以疏水性奈米孔洞薄膜排除流道內氣泡之實驗探討

行政院國家科學委員會專題研究計畫 成果報告

微流道尺寸及設計對於以疏水性奈米孔洞薄膜排除流道內

氣泡之實驗探討

研究成果報告(精簡版)

計 畫 類 別 ： 個別型

計 畫 編 號 ： NSC 98-2218-E-151-001-

執 行 期 間 ： 98 年 01 月 01 日至 98 年 10 月 31 日

執 行 單 位 ： 國立高雄應用科技大學機械工程系

計 畫 主 持 人 ： 徐金城

計畫參與人員： 碩士班研究生-兼任助理人員：戴欣民

碩士班研究生-兼任助理人員：許耕瑋

報 告 附 件 ： 出席國際會議研究心得報告及發表論文

處 理 方 式 ： 本計畫涉及專利或其他智慧財產權，2 年後可公開查詢

中 華 民 國 99 年 03 月 14 日

行政院國家科學委員會補助專題研究計畫

5

成 果 報 告

□期中進度報告

微流道尺寸及設計對於以疏水性奈米孔洞薄膜排除流道內氣

泡之實驗探討

計畫類別：個別型計畫

計畫編號：NSC 98－2218－E －151－001－

執行期間：98 年 01 月 01 日至 98 年 10 月 31 日

計畫主持人：徐金城

計畫參與人員： 許耕瑋、戴欣民

成果報告類型(依經費核定清單規定繳交)：5精簡報告 □完整報告

本成果報告包括以下應繳交之附件：

□赴國外出差或研習心得報告一份

□赴大陸地區出差或研習心得報告一份

5出席國際學術會議心得報告及發表之論文各一份

□國際合作研究計畫國外研究報告書一份

附件一

中文摘要

本研究針對以疏水性多孔性薄膜進行具有氣液雙相流之微流道內氣泡排除

之實驗探討，此多孔性薄膜之孔徑(pore size)為 0.22 μm，孔隙率(porosity)為 70%，

實驗時係以此多孔性薄膜覆蓋於寬度及深度分別為

0.5 mm 及 11 mm 之銅製 T

型微流道上，作為氣泡排除的路徑，實驗測試之微流道質通量(mass flux)條件為

5, 7.5, 10, 12.5 kg/m

s，而測試之乾度(quality)分別為 0.01, 0.02, 0.03, 0.04, 0.05,

0.06, 0.07 及 0.08，而流道具有水平及垂直兩種擺設方式。此外，為了分析測試

之條件（包括質通量、乾度及不同流道擺設方式）對於氣泡排除效率及流譜之影

響，本實驗也以高速相機觀察氣泡於微流道內之運動。實驗結果顯示，水平流道

擺設時，於相同的實驗條件下，氣泡在流道內運行的距離較垂直流道擺設時更

短，顯示氣泡於水平流道時更易於排除，原因為水平擺設方式使氣泡易於接觸多

孔性薄膜，此外，也發現增加質通量會導致更長的氣泡運行距離及流道內更大的

壓降。

關鍵字：微流道、兩相流、氣泡排除

Abstract

This study examines the venting gas and pressure drop characteristics by the

hydrophobic nanoporous membrane having a pore size of 0.22 μm and a porosity of

70%. A nanoporous membrane with T-shaped microchannel made of copper with a

width and a depth of 500 μm and 11 mm was tested. The mass flux tested in the

present study was 5, 7.5, 10 and 12.5 kg/m

s. In addition, the quality tested in the

present study ranged from 0.01 to 0.08. In order to analyze the effects of both the flow

rates of gas and liquid and the pore size on the gas/liquid two-phase flow pattern and

the bubble venting efficiency in the present experiment, the flow visualization is used

to observe the bubbles movement. The tested results show the flow rate of residual

gas with a vertical arrangement is larger than that of horizontal orientation. It is due to

buoyancy of slug gas in horizontal orientation is easier to contact with the membrane.

The higher flow rate of residual gas leads to a higher pressure drop gradient in the

flow channel.

INTRODUCTION

With continuous threatening from decrease of the fossil fuel reserve along with the

global warming around the world, looking for renewable energy has become more and

more urgent. Hydrogen fuel cell is considered as one of the most promising substitutes

for fossil fuel due to its advantages such as high conversion efficiency and no carbon

emission. Therefore, one of the goals of fuel cell development is to use as the power

sources for transport application. Besides transport application, fuel cell is also believed

that it is able to be the power source for portable electronics for offering a higher energy

density in comparison with that of Li-ion battery, provided the hydrogen is replaced

with organic aqueous fuel for fuel cells in a smaller size, such as methanol for micro

direct methanol fuel cell (μDMFC).

However, gas/liquid two-phase flow is usually unavoidable in the anodic

microchannel of the μDMFC since the methanol oxidation at the anode produces CO

gas bubbles. The formation of gas/liquid two-phase flow in the anodic microchannel

causes several serious drawbacks. One of the effects is to prevent the aqueous reactant

from reacting with catalyst due to blockage of the gas bubbles on the electrode. Besides,

gas bubbles in the microchannel also increases the pressure drop and requires more

pumping power to deliver sufficient aqueous reactant, which causes more fuel crossover

through the polymer electrolyte membrane. All of those aforementioned effects degrade

the fuel cell performance. Liao et al. [1] performed a visualization study to observe

which parameters would affect DMFCs performance. They found that the processes of

growth, coalescence, detachment, and sweeping of the gas bubbles resulted in gas

slugs blocking in both the channels and the pores in porous diffusion layer. They also

reported that the cell performance was improved with increasing aqueous methanol

flow rates, feed temperature, feed concentration, and the pressure difference between

the anode and the cathode.

In view of the aforementioned flaws accompanied with two-phase flow, it is

therefore imperative to eradicate gas bubbles from the microchannel of the μDMFC.

In order to remove the gas bubbles in the anodic microchannel of μ-DMFC, numerous

studies for microchannels with solid boundaries had been proposed. Lundin and

McCready [2] reported that addition of KOH and LiOH into the fuel of the DMFCs

could eliminate the CO

gas formation due to the increase of the solubility of CO

.

Alternatively, Meng et al. [3] removed the CO

gas bubbles in the microchannel by

employing two different kinds of hydrophobic nanoporous membranes. The membrane

covering the michochannel vents the bubble in two different working fluids, namely

10-M methanol and water. Their experimental results showed that venting gas bubbles

through nanoporous membrane in the microchannel was viable. Besides, the liquid

phase in the microchannel was able to prevent leakage by the membrane with suitable

pore size and the wettability. However, some detailed information concerning the

quantitative analysis of the pressure drop across the microchannel subject to different

quality (ratio of the gas mass flux to the total mass flux in the microchannel) and the

effect of orientation were not available in that study.

Hence, the objective of the present study is to quantitatively analyze the

relationship between pressure drop across the microchannel covered with a hydrophobic

gas-venting nanoporous membrane and the quality. Besides, orientation effect on

bubble venting is also discussed for horizontal and vertical microchannel. Moreover, the

present study exploited a high-speed video camera to record the gas/liquid two-phase

flow in the microchannel corresponding to a bubble venting design.

EXPERIMENT

The experimental facility of this study is schematically shown in Fig. 1. A copper

plate with a 0.5-mm-width and 11-mm-depth serpentine microchannel was covered by

a nanoporous membrane (FGLP PTFE Fluoropore Membranes), which has pore size

and porosity of 0.22 μm and 70%, respectively. Two acrylic plates were used to pack

the microchannel and the membrane as shown in Figs. 2 and 3. A differential

pressure transmitter (YOKOGAWA EJA110A differential pressure transducers)

having an adjustable span of 1300 to 13000 Pa was used to measure the differential

pressure of the air/water two-phase flow across the serpentine microchannel. Two gas

flow meters (NEW-FLOW, TLF-04-A-1-W-1-1-2) were employed to measure the

inlet air flow rate from an air compressor and the air flow rate discharged from the

nanoporous membrane, the accuracy of the flow meter for air is within ±1% of the test

spans. Besides, a syringe pump (KDS-210) was used to pump the water into the

microchannel. The contact angle between a water drop and the present membrane was

118.4° as shown in Fig. 4. The mass flux tested in the present study was 5, 7.5, 10 and

12.5 kg/m

s, respectively. In addition, the quality tested in the present study ranged

from 0.01 to 0.08.

A visualization instrument including a high-speed video camera

(Fastec imaging

TroubleShooter 500, the maximum camera shutter speed is 1/500 second)

and an

illuminator (Dolan Jenner, Fiber-Life) was simultaneously used for the two-phase

flow visualization in the microchannel.

Fig. 1 Schematic diagram of the present experiment

Fig. 2 Schematic diagram of the gas-venting microchannel

Fig. 3 Cross-sectional view of the gas-venting microchannel

Fig. 4 A photo showing the contact angle between a water drop and the present

membrane

Typical test results of gas-venting process by the flow visualizations are seen in

Fig. 5 (

= 2.04 mL/min,

= 10.625 mL/min). As seen, one can found that within

the channels that the gas slug is venting via the hydrophobic nanoporous membrane,

yet it contracts with time and the flow pattern is single phase full of liquid when the

position is after the slug. In the collector side of gas venting, there is no liquid flow

through the hydrophobic nanoporous membrane. For further explaining the

phenomenon, the SEM photo showing the tested hydrophobic nanoporous membrane

is given in Fig. 6. The associated surface morphology indicates a huge number of

hydrophobic nanoporous in the membrane. Gas is allowed to vent through the

microscopic hydrophobic capillaries while the liquid is blocked by the porous of

membrane. The amount of venting gas strongly related to the contact time and gas

slug configuration as they appeared in the channel.

Fig. 7 shows the associated total pressure drop subject to change of quality. As

expected, the pressure drop normally increases with the rise of both quality and mass

flux. The pressure drop gradient of vertical is larger than horizontal orientation. Note

that the tests are conducted at a single phase flow condition initially; the quality is

gradually increased to 0.08. The flow resistance in terms of pressure drop for

two-phase flow of liquid and gas flowing alongside a test section can be written as:

ΔP = ΔP

+ ΔP

+ ΔP

+ ΔP

+ ΔP

(4)

Where the subscripts i, f, a, e, and r represents entrance, friction, acceleration, exit,

and return loss, respectively. The minor effect of venting gas on the overall pressure

drop caused a small decrease in acclerational pressure drop ΔP

. A rough estimation

of the contribution of this term can be found from Collier and Thome [4]:

(

)

1

1

1

1

P

G

dx

G

x

x

ρ

ρ

ρ

ρ

⎛

⎞

⎛

⎞

Δ ≈

_⎜

−

_⎟

≈

_⎜

−

_⎟

−

⎝

⎠

⎝

⎠

∫

(a)

(b)

(c)

(d)

Fig. 6 The SEM photo of Fluoropore Membranes

In the meantime, with a residual gas being appeared in the outlet of test section,

the contribution of acceleration term is further reducing.

(b)

Fig. 7 Pressure drops vs. quality of (a) horizontal (b) vertical orientation

In general, the frictional pressure drop dominates the total pressure drop and it

accounts for most of the total pressure drops. Normally the pressure gradient for

two-phase flow at a high quality region is higher than that at a low quality region. As

seen in Fig. 8, the flow rate of residual gas of vertical arrangement is larger than that

of horizontal orientation due to buoyancy of slug gas in horizontal orientation is easier

to be in contact with the membrane. The higher flow rate of residual gas suggests a

higher pressure drop gradient in the flow channel.

Fig. 8 Flow rate of residual gas vs. quality of horizontal and vertical orientation

CONCLUSIONS

The present study conducts an experiment for bubble venting with a

hydrophobic nanoporous membrane. Its purpose is to eliminate the blockage pitfalls.

A nanoporous membrane-covered T-shaped microchannel made of copper with a

width and a depth of 500 μm and 11 mm, respectively. The mass flux tested in the

present study was 5, 7.5, 10 and 12.5 kg/m

s. In addition, the quality tested in the

present study ranged from 0.01 to 0.08. In order to analyze the effects of both the flow

rates of gas and liquid and the pore size on the gas/liquid two-phase flow pattern and

the bubble venting efficiency in the present experiment, a high speed video camera is

used to observe the bubbles movement in the microchannel. Besides flow

visualization, the pressure measurement is also performed to realize the dynamic

two-phase flow within the microchannel during the experiment for further quantitative

analysis.

The tested results show that the flow rate of residual gas having a vertical

arrangement is larger than that of horizontal orientation. Apparently this is because of

the buoyancy of slug gas in horizontal orientation is easier to be in contact with the

membrane. The higher flow rate of residual gas leads to a higher pressure drop

gradient in the flow channel.

NOMENCLATURE

G mass

flux,

kg/m

s

x quality

ΔP pressure drop, Pa

ρ

density,

kg/m

Subscripts

a acceleration

e exit

f friction

i entrance

L liquid

G gas

r return loss

REFERENCES

[1] Q. Liao, X. Zhu, X. Zheng, Y. Ding: Visualization study on the dynamics of CO

bubbles in anode channels and performance of a DMFC, J. Power Sources, 177

(2007), 644–651.

[2] M. D. Lundin, and M. J. McCready: Reduction of carbon dioxide gas formation

at the anode of a direct methanol fuel cell using chemically enhanced solubility, J.

Power Sources, 172 (2007), 553–559.

[3] D. D. Meng, T. Cubaud, C. M. Ho and C. J. Kim: A Methanol-Tolerant

Gas-Venting Microchannel for a Microdirect Methanol Fuel Cell, J.

計畫成果自評

本研究內容係以機械加工方式製作銅質的T型微流道，並對於此微流道進行

不同擺設、不同質通量及乾度進行實驗測試，量測流道內壓降於不同實驗條件之

變化及對於氣泡排除的效率，此外，也進行流場觀測探討不同測試條件時對於氣

泡運動及氣泡排除之影響，已達計畫預期內容，但是因為以傳統加工之微流道尺

寸無法更加精緻，後續可嘗試以微機電系統技術進行流道加工，如此的流道尺寸

方可較為正確的反應實際上可能應用於微流體操作時之流道尺寸。

此外，此實驗結果發現，以多孔性薄膜覆蓋於微流道上，確實可有效排除流

道內氣泡並可避免流體外洩，此種特性，未來可嘗試應用於氣泡式微流體混合器

或微型直接甲醇燃料電池，以避免氣泡於微流道內造成的影響及操作困難。

雖然以此種方式排除氣泡已於文獻中提及，但詳細的探討不同操作參數對於

氣泡排除的影響及搭配流場觀測，卻是目前尚未於文獻中，因此實驗結果經數據

整理後將投稿發表。

出席國際學術研討會

(International ASME Conference on Nanochannels, Microchannels

and Minichannels, ICNMM2009)

及發表論文

(論文題目：Research and Development on No-moving-part Valves

Using Enhancement)

報告書

服務機關：國立高雄應用科技大學

姓名職稱：徐金城 助理教授

一、目的（或原因）：

微系統的製造及應用於近年來引起全世界的學研單位的極大興趣，目前微系

統元件除了微加速度計、微噴嘴及微壓力計等，已具有成功的市場應用外，微流

體元件於微系統的應用也非常具有潛力，如應用於微型燃料電池的流道設計，以

及應用於醫療檢測用的微流體生醫晶片的微混合器、微幫浦等。因此，微系統的

研究蓬勃展開，探討微系統的設計、製造及應用為主旨的相關期刊的數量及影響

力也逐年提高。此外，為了知識的交流，許多微系統相關的國際學術研討會也定

期 於 各 地 舉 辦 ， 投 稿 的 論 文 數 也 逐 年 提 高 ， 本 研 討 會 (International ASME

Conference on Nanochannels, Microchannels and Minichannels)即為微流體研究領

域重要的學術研討會之一，已舉辦過六屆，此次（第七屆）為第一次於亞洲舉辦，

參加此會議除可以獲得國際上微流體相關技術領域的最新發展趨勢的資訊，並可

提供未來研發規劃的參考並提升研究能力。

二、經費來源：

此次出國開會及發表論文之差旅費用係由國科會支持，此國科會計畫之編號

為 NSC-98-2218-E-151-001。

三、過程：

此會議(ICNMM2009)今年的重點集中在微米等級及奈米等級的熱質傳、單

相及雙相流的現象探討，此外，工業應用的議題如微型冷凍系統、微電子散熱等

也是會議重要的議題。本會議由數個主要議題組成，包括Biomedical, Boiling and

Condensation, Chemical Reactions, Device/System Integration, Digital Microfluidics,

DNA Applications, Electrokinetic Flows, Electronics Cooling, Gas Flow, General

Papers, Heat Pipes, Heat Transfer, Interfacial Phenomena at Micro and Nanoscale –

Forum (includes Thin Films, Liquid-Solid, Liquid-Vapor And Solid-Solid Interfaces),

Lab-On-Chip, Mass Transfer, MD Simulation of Microscale and Nanoscale

Phenomena, Micro Jets and Micro Turbines, Micro-Flows In Fuel Cells,

Microfluidics, Micro-Heat Exchangers, Micromixers, Microsensors, Miniaturized

Refrigeration Systems, Nanofluidics, Novel Applications, Nuclear Applications,

Optics, Photonics Plasma Flows and Applications, Single-Phase Liquid Flow, Surface

Tension Driven Transport Processes, Two-Phase Flow等，本次會議有約200個演講

場次與約35位的邀請演講。本次會議的議程如附件一所示。

本次學術研討會我們也發表一篇論文，題目為 “

No-moving-part Valves Using Enhancement”，

如附件二。

圖一 舉辦此研討會之Pohang University of Science and Technology 之

POSCO International Center

四、心得（或成效）：

目前全球對於微米等級及奈米等級的流體元件的研究正如火如荼的展開，研

究方向不僅包括基礎學理的探討，也在尋求各種可能的應用，包括電子散熱、微

流體驅動方式、微流體的混合等，都是目前相關領域的熱門議題，因此，我們應

該嘗試根據以往的研發經驗，針對這些議題，尋求可能的切入機會。

感謝國科會計畫補助出席國際會議經費，讓我能參與 2009 年於南韓舉辦之

ICNMM，會議期間我國與各國學者專家共聚一堂，將研究成果在此次會議中提

出並與各國學者討論及交換意見，會後更詳談研究方向及目前發展的趨勢，彼此

交換研究心得，並攜回來自各國專家學者對於我們研究內容所提供的許多寶貴的

建議，實在收穫良多。

附件一

 Sunday June 21, 2009  ͶǣͲͲ’Ȃ ͺǣͲͲ’ Registration  ǡ‘•–‡†„›Ǧ‘Šƒ‰‹ ˜‡”•‹–›‘ˆ…‹‡… ‡ƒ†‡…Š‘Ž‘ ‰›ǡ‘Šƒ‰ǡ‘—–Š‘”‡ƒ . and Welcome Reception ‘…ƒ–‹‘ǣ ”ƒ†ƒŽŽ”‘ ‘ǡ –‡”ƒ–‹‘ƒŽ‡–‡”  Monday June 22, 2009  ͹ǣͶͷƒȂ ͺǣͶͷƒ  Registration  ͺǣͶͷƒǦ ͻǣͳͷƒ  Opening Ceremony ȋ –‡”ƒ–‹‘ƒŽ‘ˆ‡”‡… ‡‘‘Ȍ Welcome to Pohang Ǧ ‘ˆ‡”‡…‡ ƒ—‰—”ƒ–‹‘Ǧ—‰‹ƒ‹ǡ”‡•‹†‡–‘ˆ  ‘‘™ƒ‹ Welcome to Korea Ǧ ‘‘Š‡”Žƒ”ǡŠ‹‡ˆ‹… ‡”‡•‹† ‡–ȋ‡š–’”‡•‹†‡– ˆ”‘—‰— •–ǡȌ Conference Openin g Remarks & Fut ure Plans – Progress at Microscale Ǧ ƒ–‹•Šƒ†Ž‹ƒ”  ͻǣͳͷƒȂ ͻǣͶͷƒ  ƒ›ͳǡ‡••‹‘ͳ Plenary Speaker  „”ƒŠƒ–”‘‘…  ‘”‡ŽŽ‹˜‡”•‹–›ǡ ”‡• ‡–ƒ–‹‘ ǣ "Microvascular Structure and Function in Vitro"  ”ƒ…Ȁ‡••‹‘Šƒ‹”ǣ‘‘™ƒ‹Ƭƒ–‹•ŠǤƒ†Ž‹ƒ” ͻ ǣͶͷ ƒȂͳ Ͳǣͳ ͷƒ  Coffee Break  omedical, Track 33  ƒ›ͳǡ‡••‹‘ʹȋ‘ˆǤ ǡȌ Track 30 S u rface Ten sion  Driven Transport Processes,  Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣŠ‡ŽŽ‹Ž ‡ˆ‹ƒ‡ Ƭ ƒ–‹•ŠǤƒ†Ž‹ƒ”  ƒ›ͳǡ‡••‹‘ʹȋ‘ˆǤ ǡȌ Track 10 Gas Flow: 10 Ǧ1  Continuum and Slip Flow  Regimes & Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ‡Ž‹š Šƒ”‹’‘˜  ͲͻǦͺʹͳͶʹ ͲFunctionalized  Platform for  Purification and  Nguyen  KEYNOTE  ͲͻǦͺʹͳͶͻ Wetting and Spreading of Liquid  Metals through Open Micro  Grooves and Surface Alteration   D.P. Se kuli c KEYNOTE  ͲͻǦͺʹͳʹͷ Nanocarpet s Decorating the  walls of Microchannels    Y.Bayazitoglu  – ͺʹͳͷͳ for Cel l Therapy, and Cell Ͳ Testing  D. Huh, J. Song, W. Cha  ʹͲͲͻ – ͺʹͲͷʹ A surface Ͳdi rected microfluidic  scheme for parall el nanoliter PCR  array suitable for poi nt Ͳof Ͳcare  testing.  N. Ramalinga m, L.Q. Chen, X. H.  g, P.H.E.  Yang, D. Liqun, Q.H . Wan Yap, C.H. Neo & H. Gong  ʹͲͲͻȂͺʹͲͳʹ Analysis of Laminar Flow in the  Entrance Region of Parallel  Plate Microchannels for Slip  low  F  ƒ†‡‰Š‹ǡǤ •‰ƒ”•Šƒ•‹ ƬǤǤ ƒ‹†‹ of Platelets  in Microchannels  o ng, L.F. Brass & D.A.  ʹͲͲͻǦͺʹͲʹͲ Impact of drops on various non Ͳ wetting surf aces   P.Bruner and A. Merle n  ʹͲͲͻǦͺʹͲͳ͵ Laminar Forced Conv ecti on in  Annular Microchannels with Slip  Flow Regime  ƒ†‡‰Š‹ǡǤ •‰ƒ”•Šƒ•‹ ƬǤǤ ƒ‹†‹ Monday June 22 , 2009 ͲͻǦͺʹʹͻͳ erformance Protein  w a rd Ultra High  Molecule Nano  ʹͲͲͻǦͺʹͳͳͷ Long Ͳwave and integral boundary  layer analysis of falling film flow  on walls with three Ͳdimensional  peri odic structures  T. Gambarya n ͲRoisman, H. Yu, K.  Löffler & P. Stephan  ʹͲͲͻȂͺʹͲͷͶ Experimental Investigation of  Gaseous Flow in a Micro Ͳtube   Y.Yoshida, C. Hong, Y. Asa ko & K.  Suzu ki  airway reopening  of plug  Song, C. Baroud & P.  ʹͲͲͻȂͺʹͳ͹͵ Effect of surface wetting of  micro/nano ratchets on  Leidenfrost liquid drop motion  J.T. Ok , E. Lopez ͲOña, H. Wong & S.  Park  ʹͲͲͻȂͺʹͲ͹͹ Numerical S tudy of Gaseous  Microchannel Flows on th e Dimensional and Physical Effects   K.ͲH. Lin and J. ͲH Wu  ͲͻǦͺʹͳ͵͹ _Devices for th e and  of Circ ulating  Rana & M. R. King  ʹͲͲͻȂͺʹͳͷͻ Noncontact bubble manipulation  in microchannel by using  phototherm al Marangoni effect   H.Takeuchi, M. Motosuke and S.  Honami  ʹͲͲͻǦͺʹͲͺͻ Friction factor Correlati ons of Gas  Slip flow in Concentric Micro  nnular Tubes  A  C.Hong , Y. Asako &K. Suzuk i  Lunch  Transfer,   ‘ƒ˜ ƒ›ͳǡ‡••‹‘͵ȋ‘ˆǤǡȌ Track 3 Boiling and  Condensat ion:3 Ǧ2 Pool boiling  and nucleation, Track 30  Surface Tension Driv en  Transport Processes, Track 33  Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Œ‘”ƒŽ ƒ›ͳǡ‡••‹‘͵ȋ‘ˆǤ ǡȌ Track 10 Gas Flow: 10 Ǧ2  Transition and Free  Molecular Regimes    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Š—‰’›‘‘‰  Monday June 22 , 2009

ͳǣͶͲ’Ȃ ʹǣͲͲ’ KEYNOTE ͲͻǦͺʹͳʹͺ Electrokinet ic s in Nanochannels: The  Next Generation of Molecular and  Chemical Sensors  H. ͲC. Chang  KEYNOTE  ͲͻǦͺʹͳͷ͹  Flash Chemistry: Fast Chemical  Synthesis In Micro Flow  ystems  S _i  J.ͲI. Yoshida an d A. Nagak KEYNOTE ͲͻǦͺʹͳ͵ͷ Nucleate Pool Boiling: The Dominant  Bubble Heat Transfer Mechanisms  J. Ki m   KEYNOTE ͲͻǦͺʹͳʹ͹ Engineering of Reactive  Gas/Liquid Tw oͲ Phase Flow in  Small Channels: A Review  T. Bauer  ʹǣͲͲ’Ȃ ʹǣͳͷ’ ʹͲͲͻǦͺʹͳ͹ͳ Ageneralized analysis of  Electroosmotically driven Capillary  Flow in rect angular mic rochannels    P.Waghmare and S. Mi tra  ʹͲͲͻȂͺʹʹ͹ͺ Novel Boundary Condit io n Implementations to Model  Electroosmotic Phenomenon in  Microchannels   M. Darbandi and P. Farzinpoor  ʹͲͲͻǦͺʹͳ͸Ͳ Numerical Simulation Of  Thermocapillary ͲBuoyancy  Convection In Encapsulated Liquid  Column With Deformable Interfaces  L. Peng, J. ͲF. Liu, Y. ͲR. Li & Y. Wang  ʹͲͲͻǦͺʹͲͺͲ Investigating the Effect of  Solid Boundaries on the Gas  Molecular Mean ͲFree ͲPath  E. J. Arlemark and J. M. Re ese  ʹǣͳͷ’Ȃ ʹǣ͵Ͳ’ ʹͲͲͻǦͺʹͳ͸ͳ ANovel Method to Determ ine th e Zeta  Potential of Porous Substrate s by  Measuring the Deflection of Two  Coupled Droplets   D.P.J. Barz, M. J. Vogel & P.H. Steen  ʹͲͲͻǦͺʹͲ͸ͳ Experiment Investi gatio n Of R134a  Flow Boiling Process In Mi cro Ͳ Channel with Cavitation Str uctur e  C.Q. Tian, Ho ngzhang Cao, N. Liang  &  H.B. Xu  ʹͲͲͻǦͺʹʹͺͳ An Experim ental Investigation of Liqui d Plug Flow s in Polymeric Mi ni Ͳcha nnel s  V.A. Bhagava ti, V. Heiskanen & P. Kallio  ʹͲͲͻǦͺʹͲͺͳ Simulation of the Flow and the  Study of the Effects of the  Surface Roughness in  Isothermal Gas Flows of Micro  Scale Using  Lattice Boltz mann Metho  d don  M. Raisee and H. Tamad ʹǣ͵Ͳ’Ȃ ʹǣͶͷ’ ʹͲͲͻǦͺʹʹͲͳ Fuzzy Logic Approach for Cont rolli ng  Temperature in Electroosmotic Flow  Fields    S.Movahed, R. Kamali & M. Eghtesad ʹͲͲͻǦͺʹͲ͹ʹ Flow And Heat Transfer  Charact eri st ics Of Supercritical  Nitrogen In Mini ͲTube   P.Zhang, Y. Huang, B. Shen, & R. Z.  Wang ʹͲͲͻǦͺʹʹͻ͵ Inward Flow Of Micro ͲParticles In An  Evaporating Di ͲDispersed Colloid  Droplet On Hydrophilic Surface   J.ͲY. Jung, Y. W. Ki m & J. Y. Yoo  ʹͲͲͻǦͺʹͲʹ͹ Sound Propagation Through A  Gas In Mi croscale    F.Sharipov and D. Kalempa  ʹǣͶͷ’Ȃ ͵ǣͲͲ’ ʹͲͲͻǦͺʹͲ͹ͳ LIF Detection of Heavy Metal Ions  With A Rhodamine Derivative By A  Capillary Electrophoresis Microchip    Y.Yu, M. Yang & F. Sh en  ʹͲͲͻǦͺʹͲͺͷ Thermal Bubble Dynamics Under  The Effect Of Acoustic Vibration     X.Qu and H Qiu  ʹͲͲͻǦͺʹʹʹͳ Experimental Study Of Boiling  Phenomena By Micro/ Mill i Hydrophobic  Dot On Th e Silicon Surface In Pool  Boiling   H.J. Jo, H. Ki m, H. S. Ahn, S. Ki m, S. H.  Kang, J. Ki m & M. H. Ki m  ʹͲͲͻǦͺʹͲʹͺ Gas Circulation Due To An  Azimuthal Temperature  Distribution Over A Micro Ͳ Tube Wall  F. Sharipov   Monday June 22 , 2009 ͵ǣͲͲ’Ȃ ͵ǣͳͷ’ ʹͲͲͻǦͺʹʹͺ͵ Microscale Oil ͲCovered Cell Array  (MOCCA): A Droplet Array For High Ͳ content Single Ͳcell Analy sis and  Imaging   LͲI Lin, S ͲH. Ch a o & D. Mel drum  ʹͲͲͻǦͺʹͳͳͶ The Critical Heat Flux In Nucleate  Boiling Heat Transfer. Part: I The  Chemical Ac tuator Mechanism    M. R. Reda  ʹͲͲͻǦͺʹʹͲͶ An Experimental Study Of Surface  Tension ͲDependent Pool Boiling  Charact eri st ics Of Carbon  Nanotubes ͲNanofluids   SM Sohel Murshed, D. Mi lanova & R.  Kumar  ʹͲͲͻǦͺʹʹʹʹ Flow Past Confined Nano Cylinder  In Microscale Channels     M.Darbandi an d A. Setayeshgar ͵ǣͳͷȂ ͵ǣͷͲ’ ‘ˆˆ‡‡”‡ƒȀ‘•–‡”‡••‹‘   ͵ǣͳͷȂ ͵ǣͷͲ’ ʹͲͲͻǦͺʹʹʹͶ  Simulation of Heat Transfer in  Bridge Ͳbased Microcalorimeters    J.Yu, Z. Tang, Z. Huang & C. Feng  ʹͲͲͻǦͺʹͳͻ͹  Thermal Analysis Of Micro  Capillary Pumped Loop System    C.ͲH. Wang, T. ͲS. Le u , J. ͲM. Yu & Y. Ͳ C. Hu ʹͲͲͻǦͺʹͲͷͲ  The Optimum Design of Traveling Ͳ wave Elect roosmotic Micropumps   S.ͲP. Hsu, H. ͲJ. Ye, W. ͲJ. Luo & J. ͲS.   Chen   ʹͲͲͻǦͺʹʹͻͶ  Correl ations Between Pressure Drop  and Two ͲPhase Flow Regimes In  Microchannel Networks  C. Weinmüller and D. Poulikakos  ʹͲͲͻǦͺʹʹͻʹ  Oxygen ͲSensing Microfluidic  Scaffolds   N.W. Ch oi , R.W. Williams, S.S.  Verbridge, K. ͲY. Park, W.R. Zipfel, C.  Fischbach & A.D. Stroock ʹͲͲͻǦͺʹʹͷ͸ Analysis Of Non ͲNewtonian Fluids In  Microchannels With Different Wall  Materials   M. Darbandi, M. B. Shafii & S. Safari  ͵ǣͷͲ’Ȃ ͷǣͶͲ’ ƒ›ͳǡ‡••‹‘Ͷȋ–‡”ƒ–‹‘ƒŽ ‘ˆǤȌ Track 4 Device/System  Integration, Track 7  Electrokinetic Flows: 7 Ǧ2  Electrokinetic flow an d  transport, Track 12 Heat Pipes  & Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ  Š‡‘†‘”‹ƒ‘”…ƒǦƒ•…‹—…ǡ ‘‹‹Ǥ Ǥƒ”œǡ‡–‡”Š”Šƒ”† ƒ›ͳǡ‡••‹‘Ͷȋ—†‹–‘”‹—Ȍ Track 2 Chemical reactions:  2 Ǧ1 Chemical Reactions in  Micro and Mini ǦChannels  Track 11 – General Papers &  Track 33 Keynote    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ƒ•ƒŠ‹”‘ƒ™ƒŒ‹ǡƒ•— ›—‹ ƒƒ–ƒƬǤǤ‹–”ƒ  ƒ›ͳǡ‡••‹‘Ͷȋ‘ˆǤǡȌ Track 10 Gas Flow:  10 Ǧ2 Transition and Free  Molecular Regimes, Tr a c k 23  MD Simulation of Microscale &  Nanoscale Phenomena & Track  33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ”‹”Ž ‡ƒ”Ƭ‘‘™ƒ‹  M onday June 22 , 2009 ƒ„ƒ”›ƒǦ ‘‹•ƒ ͲͻǦͺʹʹͻͷ  Optical Coh eren ce  Real ͲTime Optical  Fo r Microfluidics  ͲC. A hn, M. Brenner & Z. Chen  KEYNOTE  ͲͻǦͺʹͳͶ͹ Micro ͲStructured Reactors and  Catalysts for the Intensification of  Chemical Processes   ARenken  KEYNOTE ͲͻǦͺʹͳ͵ͻ Transitional Flow and Related  Transport Phenom ena in Complex  Microchannels   N.Ko ckmann, C. Holvey & D. M.  Roberge  of Dielect rophoretic  Device  N.S . Kuma r, S. K. Mitra & V. R. Rao  ʹͲͲͻǦͺʹͲ͵͵ The Synthesis And  Charact eriz ations Of Narrow Ͳ Dispersed Copper Nanoparticles  W. Yu, H. Xie, L. Chen, Y. Li & C.   Zhang ʹͲͲͻǦͺʹͳͺͲ  Study Of Ga s Flow In Micronozzles  Using An Unstructured DSMC  Method   E.Roohi, M. Darbandi & V. Mirjalili  Experim ental Study on  Fluid Flat Plate Heat Pipe  Z h ang, Z. Liu, G. Ma & S. Cheng  ʹͲͲͻǦͺʹʹͺʹ Nanostructuring Cu rved Surfaces  Using A Flexible Stamp   B.Farshchian, J. J. Lee & S. Park  ʹͲͲͻȂͺʹͳͺͶ Three ͲDimensional Molecular  Dynamic Stu dy On Accommodation  Coefficients In Rough Nanochannels   J.Su n an d Z. Li   Electroosmotic Flow in Silt  Containing Salt ͲFree   ͲH. Chang  ʹͲͲͻǦͺʹʹͺ͸ Liquid Metal Flow In The Annular  Passage Of An Electrom agnetic  Pump   J.ͲT. Kwon, T. ͲH. Na hm, S. ͲH. Ki m,  H. ͲJ. Lim & C. ͲE. Kim  ʹͲͲͻȂͺʹʹͶ͸ DSMC Simalation Of The Pressure  And Temperature Driven Flows:  Comparison With The  Measurements  T. Ewart, I. A. Graur, J. ͲL. Firpo, A.  Polikarpov, P. Perrier &  J. G. M´eolans  of Electroosmotic Flow of  ͲNewtonain Fluids in a Slit   ʹͲͲͻǦͺʹͲʹͳ Data Acquisition and Physical  Interpretation With Res pect to  Micro Cha n n el Flows: A Delicate  ʹͲͲͻȂͺʹʹͳ͵ Thermal Rec tification In Bi ͲLayered  Nanofilm By Molecular Dynamics   S.ͲC. Wang an d X. ͲG. Liang   Monday June 22 , 2009 Zhao and C. Yang  Issue  D. Gloss and H. Herwig  Particle Deposition from  ic Flow in a Microfluidic   N. Unni and C. Yang  ʹͲͲͻǦͺʹͲʹʹ Analysis Of Multi ͲLayer Mini Ͳ And  Micro Ͳ Channel Heat Sinks In  Single Phase Flow Using One And  Two Equation Porous Media  Models   BHassell and A. Ortega ʹͲͲͻȂͺʹʹͶ͵ Application of Reactive Molecular  Dynamics to Simulate Diffusion and  Reaction in a Solid Oxide Fuel Cell  Pore   R.Carreno ͲC h avez, A. Smirnov, J.  Nanduri and I. Celik   Tuesday June 23, 2009  23 MD Simulation of  and Nanoscale  &Track 33 Keynote  ‘‘™ƒ ƒ›ʹǡ‡••‹‘ͳȋ—†‹–‘”‹—Ȍ Track 13 Heat Transfer &  Track 33 Keynote    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ‘ƒ˜‡Ž‡•  ƒ›ʹǡ‡••‹‘ͳȋ‘ˆǤ ǡȌ Track 3 Boiling and  Condensat ion : 3 Ǧ2 Pool  boiling and nucleation &  Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Œ‘” ƒŽ   ͲͻǦͺʹͳͶͺ We Learn From Nat ure to  Mem branes? The Intricate  Structure of the Diatom  Rosengarten  KEYNOTE  ͲͻǦͺʹͳͶ͵  Cryogenic and Fluidic Ways to  Lead to Low Cost Micro/Nano  Devices   J.Liu and Y. Yang  KEYNOTE ͲͻǦͺʹͳͷ͵ Velocity Fields in Opto ͲElectrically  Induced Fluid Flows   S.T. Wereley, E. Judokusumo, A.  Kumar, and S. Williams   Dynamics Simulation of  Cluster ͲSeed Effects on  Nucleation  Suh, S. ͲC. Jung, and W. ͲS. Yoon  ʹͲͲͻǦͺʹͲͳͺ ANumerical Investigation for  Determining Temperature Peaks  in a Finite Slab with Volumetric  Heat Generation Based on the  Hyperbolic Model of Heat  ʹͲͲͻǦͺʹͳͲ͹ AStudy of Critical Heat Flux of  Butanol A que o u s Solution   S.Nishiguchi, and M. Shoji   Tuesday June 2 3 , 2009

Conduction   M. Goharkha h, S. Amiri, an d B.  Baghapour  ͻǣʹͲƒȂ ͻǣ͵ͷƒ  ʹͲͲͻǦͺʹͳͻͻ Two Dimensional Unstructured  Direct Simulation Monte Carlo  Method Formicro/Nanochannel Gas  Flows   M. Raisee, M. d M. Shad, S. M.  Hosseinalipoor, and S. Far okhirad  ʹͲͲͻǦͺʹͲ͵͹ The Study of Intelligent Fuzzy  Weighted Input Estimation  Method Combined with the  Experiment Verification   M. ͲH. Lee, T. ͲC. Chen, T. ͲP. Yu  ʹͲͲͻǦͺʹͲͺʹ Effect of Nanoparticle D e position  on Rewetting Temperat ure and  Quench Velocity in Experi ments  with Stainless Steel Rodl ets and  Nanofluids   H.Ki m, J. Buo ngiorno, L T. McKrell  . W. Hu, an d   ͻǣ͵ͷƒȂ ͻǣͷͲƒ  ʹͲͲͻǦͺʹͳ͹ͻ Dynamic Behavior and Flow  Mechanism of Fluid in Nanochannel  by Molecular Dynamics Simulation   J.Li u, C. Liu & Q. Li  ʹͲͲͻǦͺʹͳ͸͸ Convectiv e Heat Transf er in Mini Ͳ Channels Using Digital  Interferometry   V.Sajith, Divya Haridas,  & G. R. C. Re ddy  C. B. Sobhan  ʹͲͲͻǦͺʹͲ͵Ͳ Influence of Surface Wet tability  on Pool Boiling Heat Transfer   H.T. Phan, N. Caney, P. Ma rty, S.  Colasson, J. Gavillet, &  A. Marechal   ͻǣͷͲƒȂ ͳͲǣ Ͳͷƒ  ʹͲͲͻǦͺʹͳͺ͹ Molecular Dynamic Simulation of  Surface Roughness Eff ec ts on  Nanoscale Flows   A.Kharazmi, and R. Ka mali  ʹͲͲͻǦͺʹʹͳͺ Infrared Thermal Image on  Vapor ͲLiquid Interface in  Capillary Microgrooves Heat Sink   T.Wang, X. Hu , D. Tang & C. Guo  ʹͲͲͻȂͺʹʹͶͶ Charact eri st ics of Microlayer  Thickness Formed During Boiling  in Microgaps   Y.Zhang, Y. Utaka, Y.  iaka  Kashiwabara & T. Kam  ͳͲǣͲͷƒȂ ͳͲǣ ʹͲƒ  ʹͲͲͻǦͺʹͲͻͳ Molecular ǦDynamic Simulations on  Aqueous Solutions Confined  Between Un iform ly Charged  Hydrophobic Plates   H.Hoang, S. Kang & Y. K. Su h  ʹͲͲͻǦͺʹʹͳͻ Analysis of Micro Vapor Bubble  Growing Process in Open  Capillary Microgrooves   C.Guo, X. Hu , L. Wu , D. Ta ng & T.  Wang  ʹͲͲͻǦͺʹʹ͹͸ Experimental Study on Behavior  of Bubbles and Temperature  Fluctuation of Heat Transfer  Surface by Using Heat Transfer  Surface with Artficial Cav iities  Created by MEMS Technology    Tuesday June 2 3 , 2009 T. Sa to, Y. Koizumi & H. Ohtake  ͳͲǣʹͲƒȂͳͲǣͶͷƒ Coffee Break  ͳͲǣ Ͷͷƒ Ǧ ͳʹǣ ʹͲ’   ƒ›ʹǡ‡••‹‘ʹȋ–‡”ƒ–‹‘ƒŽ ‘ˆǤȌ Track 31 Two ǦPhase Flow  Session 31 Ǧ1 Experimental  investigation of two Ǧphase flow  & Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ƒ•ƒŠ‹”‘ ƒ™ƒŒ‹ Ƭ —›‹‰ƒ  ƒ›ʹǡ‡••‹‘ʹȋ—†‹–‘”‹—Ȍ Track 13 Heat Transfer  &Track 33 Keynote    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ‘ƒ˜‡Ž‡•  ƒ›ʹǡ‡••‹‘ʹȋ‘ˆǤ ǡȌ Track 5 Digital Microfluidics  &Track 33 Keynote    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ —‰ ™‘Š‘  ͳͲǣͶͷƒȂ ͳͳǣ Ͳͷƒ  KEYNOTE  ͲͻǦͺʹͳͶͶ Capillarity, Wettability and  Interfacial Dynamics in Polymer  Electrolyte Fue l Cells  P. P. Mukherj ee KEYNOTE  ͲͻǦͺʹͳʹ͸ Frictional Characteristics of Liquid  Flows in Narrow Confinements   S.Chakraborty, and T. Das KEYNOTE  ͲͻǦͺʹͳ͵Ͷ  Hyrdodynamic Flows in  Electrowetting   K.H. Kang   ͳͳǣͲͷƒȂ ͳͳǣ ʹͲƒ  ʹͲͲͻǦͺʹʹ͹͹  Liquid ͲLiquid Segmented Flows in  Polymer Microfluidic Channels   N.Ki m, M. C. Murphy, S. A. Soper & D.  E. Nikitopoulos  ʹͲͲͻǦͺʹʹͲͻ Experimental study of  evaporation heat transf er  characteristics and pressure  drops of R410A and R134a in a  multiport mini о channel   J.Kaew о On  and S. Wongwises  ʹͲͲͻǦͺʹͲͷ͸ ANumerical Investigation of  Thermally Mediated Droplet  Formation in a T ͲJunction    P.ͲC. Ho, Y. F. Yap, N. ͲT. Ngu yen , J. C.  L. Yobas  C. Kiong, T. N. Wong &   ͳͳǣʹͲƒȂ ͳͳǣ ͵ͷƒ  ʹͲͲͻǦͺʹͳͻͶ Liquid Film Thickness in Micro Tube  Under Flow Boiling Condition    Y.Han and N. Shika zono  ʹͲͲͻǦͺʹͲͺ͹ Heat Transf er Characteristics of  Gaseous Slip Flow in Con centric  Micro Annular Tubes   C.Hong, Y. As ako, and K. S u zuki  ʹͲͲͻǦͺʹʹ͸Ͷ Digital Microfluidic Device Using  Ionic Liquids for Elect ronic  Hotspot Cooling   H.Moon, S. Bindiganavale, Y.  Nanayakkara & D. W. Arms trong   Tuesday June 2 3 , 2009 in a Micro  tal Cylindric al  Periodic Volumetric   ʹͲͲͻǦͺʹʹ͸ͺ Liquid ͲLiquid Extraction Based on  Digital Microfluidics   H.Moon, P. Kunchala, Y.  Nanayakkara, and D. W. Ar mstrong   Forced Convection  Plate Channel  ro us Media  Honari & M. Rahimian  ʹͲͲͻǦͺʹʹ͹ʹ Anew Switching Method of Twqo  Dimensional Ewod ͲBades Droplet  Translation on Single ͲPlate  Configuration   J.K. Park, S. J. Lee & K. H. Kang   of Heat Transfer in  Region of Small  bes  Yang, an d S. G.  ʹͲͲͻǦͺʹʹ͹͵ Switching Time of Electrowetting Ͳ Based Devic es   J.Hong, J. M. Oh, and K. H. Kang   LUNCH    Refrigeration  Track 33 Keynote  ‹ŽŽ‹ƒ Ǥ ƒ–‹•ŠǤƒ†Ž‹ƒ”  ƒ›ʹǡ‡••‹‘͵ȋ‘ˆǤ ǡȌ Track 8 Electronics Cooling:  Liquid & Ai r &Track 33  Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Š‹”‹•Š —Žƒ›ǡŽˆ‘•‘”–‡‰ƒƬǤǦǤ ƒ‰  June 2 3 , 2009 ͲͻǦͺʹͳ͵ͺ  Emulsification  Highly   d M. Nakajima  KEYNOTE  ͲͻǦͺʹͳͷ͸ Developm ent of a Mini Liquid  Cooli ng System for High Heat Flux  Electronic Devices  C. ͲY. Yang, C. ͲT. Yeh, K. ͲC. Huang &  S. ͲN. Tsai    io Effect on  Droplet Actuation  Membranes  K. Cho  ʹͲͲͻǦͺʹͳʹͲ Enhanced Multi ͲObjectiv e Optimization of a Microchannel  Heat Sink Using Multiple  Surrogat es Modeling  A. Husain, and K. ͲY. KIM   ͲThompson Micro Ͳ  Tanabe, Y. Kuwamoto,  Ta kata  ʹͲͲͻǦͺʹͲͷͺ AHoneycom b Microchannel  Cooli ng System for Electronics  Cooli ng   X.Luo, Y. Liu & W. Liu   of a Novel Thermal  the Fluid State   & D. K im  ʹͲͲͻǦͺʹͲͷͻ Experimental Study on a  Honeycomb Micro Cha n n el  Cooli ng System   Y.Li u, X. Luo & W. Liu   Fine Particles  with   S. Y. Son  ʹͲͲͻǦͺʹͲͶ͸ Liquid Metal Based Mini/Micro  Cooli ng Device   Y.ͲG. Deng, J. Liu, and Y. ͲX. Zhou    Break   June 2 3 , 2009

͵ǣ͵ͷ’Ȃ ͶǣͷͲ’ ƒ›ʹǡ‡••‹‘Ͷȋ–‡”ƒ–‹‘ƒŽ ‘ˆǤȌ Track 9 Mi cro ǦFlows in Fuel  ells & Track 33 Keynote  C    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣŠ‘ƒ• ”ƒ„‘Ž† ƒ›ʹǡ‡••‹‘Ͷȋ—†‹–‘”‹—Ȍ Track 13 Heat Transfer &  Track 33 Keynote     ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ‘ƒ˜ ‡Ž‡•  ƒ›ʹǡ‡••‹‘Ͷȋ‘ˆǤ ǡȌ Track Track 8 Electronics  Cooling: Liquid & Ai r, Track  20 Micro Jets & Micro  Turbines & Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Š‹”‹•Š —Žƒ›Ƭ —‡”‰‡ Ǥ”ƒ†‡” ƒ›ʹǡ‡••‹‘Ͷȋ‘ˆǤ ǡȌ Track 3 Boiling and  Condensat ion  & Track 33 Keynote    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Œ‘” ƒŽ ͵ǣ͵ͷ’Ȃ ͵ǣͷͷ’ KEYNOTE  ͲͻȂͺʹͳ͵ͳ Fuel Cells for Aircraft Application   K.A. Friedrich, J. Kallo, and J. Sc hirmer  KEYNOTE  ͲͻǦͺʹͳͶ͸  High Temperature Microsystems:  Recent Advances in  Microcombustion   S.Prakash, an d Y. F. Phang  KEYNOTE  ͲͻǦͺʹͳ͵͵  Thermal Characterization of  Interlayer Microfluidic Cooling of  Three Dimensional IC with Non Ͳ Uniform Heat Flux  Y. J. Kim , Y. K. Joshi, A.  Y. ͲJ. Lee, and S. K. Lim  G. Fedorov,  KEYNOTE  ͲͻǦͺʹͳͶͷ Flow Boiling of Carb on Dioxide in  Horiz ontal Mini ͲChannel and  Pattern Dynamics Approach to  Study Flow Pattern   M.Ozawa ͵ǣͷͷ’Ȃ ͶǣͳͲ’ ʹͲͲͻǦͺʹʹ͵͵ Visualization of Water Distribution  in Operating PEMFC Using X ͲRay  Microscopy   J.Kim, J. Je, M. Kaviany,  and M. Kim  S. Young Son,  ʹͲͲͻȂͺʹʹ͵Ͷ Influence of Interfacial Effect  Between a Porous Wall and An  Air Region on Natural Convection   C.Baoming, L. Fang, L. Ai Wenguang min , and G.  ʹͲͲͻǦͺʹʹ͹ͻ Developm ent of Cooli ng System  for a Large Area at High Heat  Flux by Using Flow Boiling in  Narrow Channels  S. Miura, Y. Inada, Y. Sh H. Oht a inmoto, and  ʹͲͲͻǦͺʹͳͲͷ Subcooled Flow Boiling in a  Microchannel   A.Oshima, K. Suzuki, C. Ho ng, M.  Mochi zuki  ͶǣͳͲ’Ȃ Ͷǣʹͷ’ ʹͲͲͻǦͺʹͳͺ͸ InͲSitu Diagnostics of PEFCS   K.A. Friedrich, N. Wagner , and M.  Schul ze  ʹͲͲͻȂͺʹʹ͵͸ Effect of Coupled Diffusion on  Heat and M ass Transfer in  Partially Porous Caviti es  L. Fang, C. Ba oming, G. W e nguang,  and L. Aimin  ʹͲͲͻǦͺʹʹ͸ʹ Cooli ng of Microelectronic  Devices Packaged in a Single Ch ip  Module Using Single Phase  Refri gerant R Ͳ123  T. Pasupuleti and S. G. Ka ndlikar  ʹͲͲͻǦͺʹͳͲ͸ Subcooled Boiling in the  Ultrasonic Field (on Cause of MEB  Generation)   F.Ina gaki, K. Suzu ki, and C. Hong  Ͷǣʹͷ’Ȃ ͶǣͶͲ’ ʹͲͲͻǦͺʹͲͲͳ Novel In ͲSitu Laser Based  Diagnostics for Measurement of  Water Vapor and Ca rbon Dioxide  Concentrations in the Ga s Distribution Channels of a PEM Fuel  Cell  ʹͲͲͻǦͺʹʹ͵ͻ Pressure Effect on Flow Boiling  Heat Transf er of Water in  Minichannels   K.ͲH. Bang, K. ͲK. Ki m, O. ͲK. Choi, and  H. ͲS. Jeong  ʹͲͲͻǦͺʹͲʹͻ Impact of the Temperat ure of  Twin Inclined Tandem Jets on  their Dynam ic Interaction with a  Cool er Onc oming Crossflow   A.Radhouane, N. Mahjoub, H.  ʹͲͲͻǦͺʹͳͳ͵ Study on Boiling Heat Transfer in  Narrow Channel and Horizontal Ͳ Narrow Flat Space   Y.Koizumi, H. Ohtake, and T.  Oshikawa  Tuesday June 2 3 , 2009 D. E. Lambe, K. Seleski, R. Kumar, and S.  Basu  Mhiri, G. Lepalec, and P. B o urnot  ͶǣͶͲ’Ǧ Ͷǣͷͷ’  ʹͲͲͻǦͺʹͳͳͳ Study on Condensati on Heat  Transfer of Micro Structured  Surfaces  H. Ohtake, Y. Koizumi & S.   Miyake  ͹ǣͲͲ’Ȃ ͳͲǣ ͲͲ’   Confe ȋ”ƒ†ƒŽŽ”‘‘Ȍ rence Banquet ͹ǣͲͲ’Ǧ͹ǣ͵Ͳ’‘…‹ƒŽ ͹ǣ͵ͲǦͳͲǣͲͲ’ƒ“—‡ –‡”‡‘›ƒ††‹‡” Wednesday June 24, 2009  ͺǣͶͷƒȂ ͳͲǣ ʹͲƒ  ƒ›͵ǡ‡••‹‘ͳȋ‘ˆǤǡȌ Track 25 N o vel Applications &  Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ǤŠ‘Œ‹ƒ†ǤǤ‹–”ƒ ƒ›͵ǡ‡••‹‘ͳȋ—†‹–‘”‹—Ȍ Track 18 Microfluidics    ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ‘”„‡”– ‘…ƒ  ƒ›͵ǡ‡••‹‘ͳȋ‘ˆǤǡȌ Track 24 N anofluidics, Track 31  Two ǦPhase Flow Session 31 Ǧ2  Numerical or Theoretical  Investigation of Two ǦPhase Flow &  Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Šƒ—”›ƒ ”ƒƒ•ŠƬ ƒ•ƒŠ‹”‘ƒ™ƒŒ‹   ͺǣͶͷƒȂ ͻǣͲͷƒ  KEYNOTE  ʹͲͲͻǦͺʹͳʹͻ  Flooding visualization and Enhanced  Water Management in PEM Fuel  Cell  H. H. Cho, S. Lee & D. ͲH. Rhee  ʹͲͲͻǦͺʹͳ͸͵ Research and Developm ent on  No ͲMoving ͲPart Valves using  Enhancem ent   K.Yang, Y. ͲC. Liu, C. ͲC. Wa ng & J. ͲC.  Shyu  KEYNOTE ʹͲͲͻǦͺʹͳͷͷ Micro/Meso Scale Modeling of Two Ͳ Phase Flow on Functional Surfaces – A  Numerical Simulation of Water Droplets  on Natural Hydrophobic Surfaces with  Micro Roughness  Y.Y. Yan   Wednesday Jun e 2 4 , 2009 Investigation of Non Ͳ Heating on Flow Boiling  in a Microchannels  Heat Sink  Bogojevic, K. Sefia ne, A. J. Walton1,  R. Ke nning,  Lin, G. Cummins, D.B. T. G . Kara yiannis  ʹͲͲͻǦͺʹͲͻͺ Transport Phenom ena in Novel  Microstructures Fo r Use in  Thermal Separation Proc esses   L.E. Wiesegger, R. P. Knauss, T.  Winkler, S. Maikowske, J. J.  r Brandner, and R. J. Mar ʹͲͲͻȂͺʹͲ͸ʹ Flow Simulations in a Sub ͲMicro Porous  Medium by the Lattice Boltzmann and  the Molecular Dynamics Methods   S.Takenaka, K. Suga, T. Kinjo, and S. Hy odo   End Effect on Boiling  Emission in Micro Capillary   Wu an d X. ͲF. Peng  ʹͲͲͻǦͺʹͲͳͲ Modeling and Simulation of a  Rollerball M icrofluidic Device   L.R. Rojas ͲSolórzano, S. L. Anna, B.  Bradeddine, and C. H. Amon  ʹͲͲͻǦͺʹͳͳͺ Numerical Simulation and Experimental  Observations of Confined Bubble Growth  During Flow Boiling in a Microchannel  with Rectangular Cross Ͳsection of High  Aspect Ratio   Y.Q. Zu, S. Ge dupu di, Y. Karayiannis, and D.B.R.  Y Yan, T. G.  K e nning   Investigation of  Heat Flux in Microchannels  Flow Field Probes  Ko Ɣar, Y. P eles, A. E. Bergles, and G.  Cole  ʹͲͲͻǦͺʹʹͶͷ Numerical I nvestigation of a Fiber  Web Effect on the Pressure Drop  and Particles Coll ection in a  Microchannel   A.Dastan, and O. Abouali  ʹͲͲͻǦͺʹͳͳͻ 1ͲD Modeling and 3 ͲD Simulation of  Confin ed Bubble Formation and Pressure  Fluctuations During Flow Boiling in a  Microchannel with a Rectangular Cross Ͳ section of High Aspect Ratio  S. Gedupudi, Y.Q. Zu, T.G Kenning, and Y.Y Yan  . Karayiannis, D.B.R.   of Flow Cont rol in  Using Ferrofluid   C. Gu nde, and S. K. Mitr a ʹͲͲͻǦͺʹʹͷͷ Numerical Simulation of Single  Phase Liquid Flow in N a rrow  Rectangular Channels with  Structured Roughness Walls  R. R. Srivastava, N. M. Schneider,  and S. G. Ka ndlikar  ʹͲͲͻǦͺʹͲ͵ͻ  Experimental and Num erical  Investigation of Droplet Transport in a  Diffuser/Nozzle Structure   J.Li u, N. ͲT. Nguyen, and Y. F. Yap   Wednesday Jun e 2 4 , 2009 Synthesis of  Nanoparticles for  Ca ncer Therapy  Gu, R. Karnik, R. Langer, and O.   ʹͲͲͻǦͺʹͳͺͷ Theoretical Discussions on  Oscillating Heat Transfer  Performance in Small Ducts   X.ͲF. Peng, J. Zou, an W. ͲM. Yan  d ʹͲͲͻǦͺʹͳ͹ʹ  Impact and Spreading of a Microdroplet  on a Solid Wall   M. Muradoglu and S. Tasoglu    Coffee Break   9 Mi cro ǦFlows in Fuel  ells & Tr ack 33 Keynote  ƒ›͵ǡ‡••‹‘ʹȋ—†‹–‘”‹—Ȍ Tack 14 In terfacial Phenomena  at Micro & Nanoscale, Track 18  Mircofludi cs: 18 Ǧ2 Applications  & Track 33 Keynote   ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ ™ƒ‰Ǧ›— ƒ‰Ƭ‘”„‡”–‘…ƒ ƒ›͵ǡ‡••‹‘ʹȋ‘ˆǤǡȌ Track 24 N anofludics      ”ƒ…Ȁ‡••‹‘Šƒ‹”•ǣ Šƒ—”›ƒ ”ƒƒ•Š    ͲͻǦͺʹͳ͵ʹ ͲSitu Measurement in Through Ͳ Direction in PEMFC  Ito, S. L ee, A. Yama moto, M. Hirano,  i, and K. Ogawa  Muramats u, K. Sasak KEYNOTE  ͲͻǦͺʹͳͷͲ  L C  iquid Film Thickness in Micro  hannel Slug Flow  N. Shikazono and Y. Han  ʹͲͲͻǦͺʹͲ͵ʹ The Thermal Transport Pr o p er tie s of  Ethylene Gly col based MGO  Nanofluids   W. Yu, H. ͲQ. Xie, Y. Li, and L. ͲF. Ch e n   ͲSitu Characterization of Two Ͳ Flow in Cathode Channels of  Operating PEM Fuel Cell with  Access  M. Sergi, Z. Lu, and S. G. Kandlikar  ʹͲͲͻǦͺʹʹ͸͵ The effects of Surface Wettability on  Viscous Film Depositi on   A. Herescu and J. S. Allen  ʹͲͲͻǦͺʹͲʹͷ Two Dimensional Flow and Heat  Transfer Simulation of Nanofluids in  Microchannels   A.A. Ranjbar, A. Ramiar, an d S. F.  Hosseinizadeh   Wedne sday Jun e 2 4 , 2009