Biomicrofluidics http://scitation.aip.org/ Biomicrofluidics Development and fertility studies on post-bio-electrosprayed Drosophila melanogaster embryos http://link.aip.org/link/?BMF/3/044107/1&agg=rss Pascal Joly, Barbara H. Jennings, and Suwan N. Jayasinghe<br/> Bio-electrosprays (BESs) provide a means of precisely manipulating cells and thus have the potential for many clinical uses such as the generation of artificial tissues/organs. Previously we tested the biological safety of this technology with a variety of living cells and also embryos from the vert ... [Biomicrofluidics 3, 044107 (2009)] published Wed Nov 18, 2009. Cascade optical chromatography for sample fractionation http://link.aip.org/link/?BMF/3/044106/1&agg=rss Alex Terray, Joseph D. Taylor, and Sean J. Hart<br/> Optical chromatography involves the elegant combination of opposing optical and fluid drag forces on colloidal samples within microfluidic environments to both measure analytical differences and fractionate injected samples. Particles that encounter the focused laser beam are trapped axially along t ... [Biomicrofluidics 3, 044106 (2009)] published Mon Nov 16, 2009. A microfluidic DNA computing processor for gene expression analysis and gene drug synthesis http://link.aip.org/link/?BMF/3/044105/1&agg=rss Yu Zhang, Hao Yu, Jianhua Qin, and Bingcheng Lin<br/> Boolean logic performs a logical operation on one or more logic input and produces a single logic output. Here, we describe a microfluidic DNA computing processor performing Boolean logic operations for gene expression analysis and gene drug synthesis. Multiple cancer-related genes were used as inpu ... [Biomicrofluidics 3, 044105 (2009)] published Fri Nov 6, 2009. Dielectrophoretic field-flow method for separating particle populations in a chip with asymmetric electrodes http://link.aip.org/link/?BMF/3/044104/1&agg=rss Ciprian Iliescu, Guillaume Tresset, and Guolin Xu<br/> This paper presents a field-flow method for separating particle populations in a dielectrophoretic (DEP) chip with asymmetric electrodes under continuous flow. The structure of the DEP device (with one thick electrode that defines the walls of the microfluidic channel and one thin electrode), as wel ... [Biomicrofluidics 3, 044104 (2009)] published Wed Oct 21, 2009. Design and optimization of a double-enzyme glucose assay in microfluidic lab-on-a-chip http://link.aip.org/link/?BMF/3/044103/1&agg=rss Yegermal Tesfaw Atalay, Daan Witters, Steven Vermeir, Nicolas Vergauwe, Pieter Verboven et al.<br/> An electrokinetic driven microfluidic lab-on-a-chip was developed for glucose quantification using double-enzyme assay. The enzymatic glucose assay involves the two-step oxidation of glucose, which was catalyzed by hexokinase and glucose-6-phosphate dehydrogenase, with the concomitant reduction of N ... [Biomicrofluidics 3, 044103 (2009)] published Mon Oct 19, 2009. Concurrent droplet charging and sorting by electrostatic actuation http://link.aip.org/link/?BMF/3/044102/1&agg=rss Byungwook Ahn, Kangsun Lee, Romain Louge, and Kwang W. Oh<br/> This paper presents a droplet-based microfluidic device for concurrent droplet charging and sorting by electrostatic actuation. Water-in-oil droplets can be charged on generation by synchronized electrostatic actuation. Then, simultaneously, the precharged droplets can be electrostatically steered i ... [Biomicrofluidics 3, 044102 (2009)] published Tue Oct 13, 2009. Study on surface properties of PDMS microfluidic chips treated with albumin http://link.aip.org/link/?BMF/3/044101/1&agg=rss Walter Schrott, Zdenek Slouka, Petr Cervenka, Jiri Ston, Marek Nebyla et al.<br/> Electrokinetic properties and morphology of PDMS microfluidic chips intended for bioassays are studied. The chips are fabricated by a casting method followed by polymerization bonding. Microchannels are coated with 1% solution of bovine serum albumin (BSA) in Tris buffer. Albumin passively adsorbs o ... [Biomicrofluidics 3, 044101 (2009)] published Mon Oct 12, 2009. Parallel combinatorial chemical synthesis using single-layer poly(dimethylsiloxane) microfluidic devices http://link.aip.org/link/?BMF/3/034106/1&agg=rss Joseph P. Dexter and William Parker<br/> Improving methods for high-throughput combinatorial chemistry has emerged as a major area of research because of the importance of rapidly synthesizing large numbers of chemical compounds for drug discovery and other applications. In this investigation, a novel microfluidic chip for performing paral ... [Biomicrofluidics 3, 034106 (2009)] published Fri Sep 25, 2009. Polydimethylsiloxane-integratable micropressure sensor for microfluidic chips http://link.aip.org/link/?BMF/3/034105/1&agg=rss Limu Wang, Mengying Zhang, Min Yang, Weiming Zhu, Jinbo Wu et al.<br/> A novel microfluidic pressure sensor which can be fully integrated into polydimethylsiloxane (PDMS) is reported. The sensor produces electrical signals directly. We integrated PDMS-based conductive composites into a 30 [mu]m thick membrane and bonded it to the microchannel side wall. The response t ... [Biomicrofluidics 3, 034105 (2009)] published Thu Sep 17, 2009. Electrodes on a budget: Micropatterned electrode fabrication by wet chemical deposition http://link.aip.org/link/?BMF/3/034104/1&agg=rss Wataru Ebina, Amy C. Rowat, and David A. Weitz<br/> Precise patterning of metals is required for diverse microfluidic and microelectromechanical system (MEMS) applications ranging from the separation of proteins to the manipulation of single cells and drops of water-in-oil emulsions. Here we present a very simple, inexpensive method for fabricating m ... [Biomicrofluidics 3, 034104 (2009)] published Tue Sep 8, 2009. Complementary metal oxide semiconductor compatible fabrication and characterization of parylene-C covered nanofluidic channels with integrated nanoelectrodes http://link.aip.org/link/?BMF/3/031101/1&agg=rss Chih-kuan Tung, Robert Riehn, and Robert H. Austin<br/> Nanochannels offer a way to align and analyze long biopolymer molecules such as DNA with high precision at potentially single basepair resolution, especially if a means to detect biomolecules in nanochannels electronically can be developed. Integration of nanochannels with electronics will require t ... [Biomicrofluidics 3, 031101 (2009)] published Tue Aug 18, 2009. Microwave frequency sensor for detection of biological cells in microfluidic channels http://link.aip.org/link/?BMF/3/034103/1&agg=rss M. Nikolic-Jaric, S. F. Romanuik, G. A. Ferrier, G. E. Bridges, M. Butler et al.<br/> We present details of an apparatus for capacitive detection of biomaterials in microfluidic channels operating at microwave frequencies where dielectric effects due to interfacial polarization are minimal. A circuit model is presented, which can be used to adapt this detection system for use in othe ... [Biomicrofluidics 3, 034103 (2009)] published Wed Aug 12, 2009. Effect of surface acoustic waves on the viability, proliferation and differentiation of primary osteoblast-like cells http://link.aip.org/link/?BMF/3/034102/1&agg=rss Haiyan Li, James Friend, Leslie Yeo, Ayan Dasvarma, and Kathy Traianedes<br/> Surface acoustic waves (SAWs) have been used as a rapid and efficient technique for driving microparticles into a three-dimensional scaffold matrix, raising the possibility that SAW may be effective in seeding live cells into scaffolds, that is, if the cells were able to survive the infusion process ... [Biomicrofluidics 3, 034102 (2009)] published Tue Aug 4, 2009. Rapid detection of natriuretic peptides by a microfluidic LabChip analyzer with DNA aptamers: Application of natriuretic peptide detection http://link.aip.org/link/?BMF/3/034101/1&agg=rss Ming-Cheng Lin, Jiraporn Nawarak, Tai-Yuan Chen, Hsien-Yu Tsai, Jung-Feng Hsieh et al.<br/> Rapid detection of brain natriuretic peptide (BNP) concentration can be used for the diagnosis of acute heart failure and for the evaluation of the effectiveness of a clinical therapy. We used the systematic evolution of ligands by exponential enrichment method to develop DNA aptamers for BNP whose ... [Biomicrofluidics 3, 034101 (2009)] published Thu Jul 30, 2009. Induced charge electro osmotic mixer: Obstacle shape optimization http://link.aip.org/link/?BMF/3/022413/1&agg=rss Mranal Jain, Anthony Yeung, and K. Nandakumar<br/> Efficient mixing is difficult to achieve in miniaturized devices due to the nature of low Reynolds number flow. Mixing can be intentionally induced, however, if conducting or nonconducting obstacles are embedded within the microchannel. In the case of conducting obstacles, vortices can be generated ... [Biomicrofluidics 3, 022413 (2009)] published Tue Jun 30, 2009. Preface to Special Topic: Papers from the 2009 Conference on Advances in Microfluidics and Nanofluidics, The Hong Kong University of Science & Technology, Hong Kong, 2009 http://link.aip.org/link/?BMF/3/022301/1&agg=rss Leslie Y. Yeo<br/> The inaugural conference on Advances in Microfluidics and Nanofluidics was held at the Hong Kong University of Science and Technology on 57 January 2009 and brought together leading researchers from across a wide variety of disciplines from North America, Europe, Asia, and Oceania. This Special Topi ... [Biomicrofluidics 3, 022301 (2009)] published Fri Jun 26, 2009. Modeling the coalescence of sessile droplets http://link.aip.org/link/?BMF/3/022412/1&agg=rss M. Sellier and E. Trelluyer<br/> This paper proposes a simple scenario to describe the coalescence of sessile droplets. This scenario predicts a power-law growth of the bridge between the droplets. The exponent of this power law depends on the driving mechanism for the spreading of each droplet. To validate this simple idea, the co ... [Biomicrofluidics 3, 022412 (2009)] published Fri Jun 19, 2009. Transport properties and induced voltage in the structure of water-filled single-walled boron-nitrogen nanotubes http://link.aip.org/link/?BMF/3/022411/1&agg=rss Quanzi Yuan and Ya-Pu Zhao<br/> Density functional theory/molecular dynamics simulations were employed to give insights into the mechanism of voltage generation based on a water-filled single-walled boron-nitrogen nanotube (SWBNNT). Our calculations showed that (1) the transport properties of confined water in a SWBNNT are differe ... [Biomicrofluidics 3, 022411 (2009)] published Thu Jun 18, 2009. Unfolding polyelectrolytes in trivalent salt solutions using dc electric fields: A study by Langevin dynamics simulations http://link.aip.org/link/?BMF/3/022410/1&agg=rss Yu-Fu Wei and Pai-Yi Hsiao<br/> We study the behavior of single linear polyelectrolytes condensed by trivalent salt under the action of electric fields through computer simulations. The chain is unfolded when the strength of the electric field is stronger than a critical value. This critical electric field follows a scaling law ag ... [Biomicrofluidics 3, 022410 (2009)] published Tue May 19, 2009. An atomistic-continuum hybrid simulation of fluid flows over superhydrophobic surfaces http://link.aip.org/link/?BMF/3/022409/1&agg=rss Qiang Li and Guo-Wei He<br/> Recent experiments have found that slip length could be as large as on the order of 1 [mu]m for fluid flows over superhydrophobic surfaces. Superhydrophobic surfaces can be achieved by patterning roughness on hydrophobic surfaces. In the present paper, an atomistic-continuum hybrid approach is deve ... [Biomicrofluidics 3, 022409 (2009)] published Wed May 13, 2009. Surface charge density of the track-etched nanopores in polyethylene terephthalate foils http://link.aip.org/link/?BMF/3/022408/1&agg=rss Jianming Xue, Yanbo Xie, Yu Yan, Jin Ke, and Yugang Wang<br/> Surface charge is one of the most important properties of nanopores, which determines the nanopore performance in many practical applications. We report the surface charge densities of track-etched nanopores, which were obtained by measuring the streaming current and pore conductance, respectively. ... [Biomicrofluidics 3, 022408 (2009)] published Wed May 13, 2009.