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A Label-Free High Throughput Resistive-Pulse Sensor For Simultaneous Differentiation And Measurement Of Multiple Particle-Laden Analytes, Ashish Jagtiani, Rupesh Sawant, Jiang Zhe
A Label-Free High Throughput Resistive-Pulse Sensor For Simultaneous Differentiation And Measurement Of Multiple Particle-Laden Analytes, Ashish Jagtiani, Rupesh Sawant, Jiang Zhe
Dr. Jiang Zhe
We describe an all-electronic, label-free, resistive-pulse sensor that utilizes multiple microchannels for parallel detection, counting and differentiation of multiple biological particles simultaneously. Four particle solutions, including 20 µm and 40 µm polymethacrylate particles, Juniper Scopulorum (Rocky Mountain Juniper) pollen and Populus deltidoes (Eastern Cottonwood) pollen, were loaded to the four peripheral reservoirs, respectively, and were driven to the central reservoir through four microchannels, all operating simultaneously for particle detection and counting. Experiments demonstrated that this sensor was able to differentiate and count multiple particle solutions simultaneously through its four microchannels fabricated on polymer membranes. Thus the sensing throughput has been …
Swelling Characteristics Of Acrylic Acid Polyelectrolyte Hydrogel In A Dc Electric Field, Esmaiel Jabbari, Javad Tavakoli, Alireza Sarvestani
Swelling Characteristics Of Acrylic Acid Polyelectrolyte Hydrogel In A Dc Electric Field, Esmaiel Jabbari, Javad Tavakoli, Alireza Sarvestani
Esmaiel Jabbari
No abstract provided.
Polymer Based Nanocomposites With Nanofibers And Exfoliated Clay, Michael Meador, Darrell Reneker
Polymer Based Nanocomposites With Nanofibers And Exfoliated Clay, Michael Meador, Darrell Reneker
Darrell Hyson Reneker
Polymer solutions, containing clay sheets, were electrospun into nanofibers and microfibers that contained clay sheets inside. Controllable removal of polymer by plasma etching from the surface of fibers revealed the arrangement of clay. The shape, flexibility, size distribution and arrangement of clay sheets were observed by transmission and scanning electron microscopy. The clay sheets were partially aligned in big fibers with normal direction of clay sheets perpendicular to fiber axis. Crumpling of clay sheets inside fibers was observed when the fiber diameter was comparable to the lateral size of clay sheets. Single sheets of clay were observed both by catching …
Spectroscopic Investigation Into Oxidative Degradation Of Silica-Supported Amine Sorbents For Co2 Capture, Chakravartula Srikanth, Steven Chuang
Spectroscopic Investigation Into Oxidative Degradation Of Silica-Supported Amine Sorbents For Co2 Capture, Chakravartula Srikanth, Steven Chuang
Steven S.C. Chuang
Oxidative degradation characteristics of silica-supported amine sorbents with varying amounts of tetraethylenepentamine (TEPA) and polyethylene glycol (PEG; P200 or P600 represents PEG with molecular weights of 200 or 600) have been studied by IR and NMR spectroscopy. Thermal treatment of the sorbents and liquid TEPA at 100 °C for 12 h changed their color from white to yellow. The CO2 capture capacity of the TEPA/SiO2 sorbents (i.e., SiO2-supported TEPA with a TEPA/SiO2 ratio of 25:75) decreased by more than 60 %. IR and NMR spectroscopy studies showed that the yellow color of the degraded sorbents resulted from the formation of …
Application Of The Thermal Flash Technique For Low Thermal Diffusivity Micro/Nanofibers, Michael T. Demko, Zhenting Dai, Han Yan, William P. King, Miko Cakmak, Alexis R. Abramson
Application Of The Thermal Flash Technique For Low Thermal Diffusivity Micro/Nanofibers, Michael T. Demko, Zhenting Dai, Han Yan, William P. King, Miko Cakmak, Alexis R. Abramson
Mukerrem Cakmak
The thermal flash method was developed to characterize the thermal diffusivity of micro/nanofibers without concern for thermal contact resistance, which is commonly a barrier to accurate thermal measurement of these materials. Within a scanning electron microscope, a micromanipulator supplies instantaneous heating to the micro/nanofiber, and the resulting transient thermal response is detected at a microfabricated silicon sensor. These data are used to determine thermal diffusivity. Glass fibers of diameter 15 mu m had a measured diffusivity of 1.21x10(-7) m(2)/s; polyimide fibers of diameters 570 and 271 nm exhibited diffusivities of 5.97x10(-8) and 6.28x10(-8) m(2)/s, respectively, which compare favorably with bulk …
Free Radicals Copolymerization Optimization, System: Acrylonitrile-Vinyl Acetate In Cstr, Silvia V. Vallecillo-Gomez, Juan C. Tapia-Picazo, Adrian Bonilla-Petriciolet, Gibran G. De-Alba-Perez-De-Gracia
Free Radicals Copolymerization Optimization, System: Acrylonitrile-Vinyl Acetate In Cstr, Silvia V. Vallecillo-Gomez, Juan C. Tapia-Picazo, Adrian Bonilla-Petriciolet, Gibran G. De-Alba-Perez-De-Gracia
Adrian Bonilla-Petriciolet
In this work, we study the free radicals solution copolymerization, system acrylonitrile (AN) – vinyl acetate (VA), with the objective to find the parameters of characteristic correlations that are used to determine the reaction autoacceleration phenomenon or gel effect. Two gel effect correlations were evaluated for each monomer. Parameters were found using the stochastic global optimization Simulated Annealing method and experimental data in batch reactor. Gel effect correlations with greater adjustment were used to carry out a sensitivity analysis through continuous stirred tank reactor model. A competence between monomers conversion, average molecular weight of the polymer and the polidispersity was …
Energetic And Entropic Elasticity Of Nonisothermal Flowing Polymers: Experiment, Theory, And Simulation, David Keffer, T. C. Ionescu, B. J. Edwards, V. G. Mavrantzas
Energetic And Entropic Elasticity Of Nonisothermal Flowing Polymers: Experiment, Theory, And Simulation, David Keffer, T. C. Ionescu, B. J. Edwards, V. G. Mavrantzas
David Keffer
The thermodynamical aspects of polymeric liquids subjected to nonisothermal flow are examined from the complementary perspectives of theory, experiment, and simulation. In particular, attention is paid to the energetic effects, in addition to the entropic ones, that occur under conditions of extreme deformation. Comparisons of experimental measurements of the temperature rise generated under elongational flow at high strain rates with macroscopic finite element simulations offer clear evidence of the persistence and importance of energetic effects under severe deformation. The performance of various forms of the temperature equation are evaluated with regard to experiment, and it is concluded that the standard …
Phase Behavior In Copolymer Blends Of Poly(P-Chlorostyrene-Co-O-Chlorostyrene) And Phenylsulfonylated Poly(2,6-Dimethyl-1,4-Phenylene Oxide), William Macknight, R. Vukovic, G. Bogdanic, Vjera Kuresevic, M. Tomaskovic, F. E. Karasz
Phase Behavior In Copolymer Blends Of Poly(P-Chlorostyrene-Co-O-Chlorostyrene) And Phenylsulfonylated Poly(2,6-Dimethyl-1,4-Phenylene Oxide), William Macknight, R. Vukovic, G. Bogdanic, Vjera Kuresevic, M. Tomaskovic, F. E. Karasz
William MacKnight
Thermodynamic Aging Of Immiscible Polymer Blends, William Macknight, Ronald Koningsveld, Karel Sole
Thermodynamic Aging Of Immiscible Polymer Blends, William Macknight, Ronald Koningsveld, Karel Sole
William MacKnight
No abstract provided.
Molecular Motions In Model Network Polymers, William Macknight, L. Charles Dickinson, P. Morganelli, C. W. Chu, Z. Petrovic, James C. W. Chien
Molecular Motions In Model Network Polymers, William Macknight, L. Charles Dickinson, P. Morganelli, C. W. Chu, Z. Petrovic, James C. W. Chien
William MacKnight
No abstract provided.
Structure And Applications Of Ion-Containing Polymers, William Macknight
Structure And Applications Of Ion-Containing Polymers, William Macknight
William MacKnight
No abstract provided.
Deformation Studies Of Polymers By Time-Resolved Infrared Spectroscopy Iv: A Modified Approach, William Macknight, S. E. Moles, S. L. Hsu
Deformation Studies Of Polymers By Time-Resolved Infrared Spectroscopy Iv: A Modified Approach, William Macknight, S. E. Moles, S. L. Hsu
William MacKnight
No abstract provided.
A Comment On The T.... Relaxation As Observed In Polymers By Means Of Thermally Stimulated Current (Tsc) Measurements, William Macknight, R. M. Neumann
A Comment On The T.... Relaxation As Observed In Polymers By Means Of Thermally Stimulated Current (Tsc) Measurements, William Macknight, R. M. Neumann
William MacKnight
No abstract provided.
Thermal Degradation Of Glumate Polymers, William Macknight, C. Peter Lillya, Richard M. Newman, Wei-Fang A. Su, Peter C. Uden
Thermal Degradation Of Glumate Polymers, William Macknight, C. Peter Lillya, Richard M. Newman, Wei-Fang A. Su, Peter C. Uden
William MacKnight
No abstract provided.
Poly(Alkyl Alpha-Chloroacrylates). V. Preparation And Properties Of Methyl, Ethyl, And Isopropyl Polymers Of Varied Tacticity, William Macknight, G. R. Dever, F. E. Karasz, R. W. Lenz
Poly(Alkyl Alpha-Chloroacrylates). V. Preparation And Properties Of Methyl, Ethyl, And Isopropyl Polymers Of Varied Tacticity, William Macknight, G. R. Dever, F. E. Karasz, R. W. Lenz
William MacKnight
No abstract provided.
Relaxation Of Disulfide And Tetrasulfide Polymers, William Macknight, A. V. Tobolsky, M. Takahashi
Relaxation Of Disulfide And Tetrasulfide Polymers, William Macknight, A. V. Tobolsky, M. Takahashi
William MacKnight