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Zhang T, Zhang B, Zhao Y, Javadpour F, He X, Ge F, Wu J, Zhang D. Simulation of Water Flow in a Nanochannel with a Sudden Contraction or Expansion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6720-6730. [PMID: 35584361 DOI: 10.1021/acs.langmuir.2c00672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Water flow in a nanoscale channel is known to be affected by strong water-wall interactions; as a result, the flow considerably deviates from the conventional continuum flow. Nanochannel with a sudden contraction or expansion is the most fundamental morphological nanostructure in many nanoporous systems such as shale matrix, mudrock, membrane, etc. However, the nanoconfinement effects of water flow in nanoporous systems and its effect on macroscopic flow behavior are still evolving research topics. In this work, our recently developed pore-scale lattice Boltzmann method (LBM) considering the nanoscale effects is extended to directly simulate water flow in nanoporous systems. The results show that the flow rate is dramatically decreased in hydrophobic nanopores because of additional flow resistances at the contraction and expansion junctions. This indicates that the bundle of capillary models or the permeability averaging method overestimates the water flow rate in nanoporous media if the contraction/expansion effects between different nanopores are ignored. This work highlights the importance of wettability of the nanochannel in the determination of dynamic water flow behaviors in the contraction/expansion nanosystem. Other important aspects, including velocity distribution, flow patterns, and vortex characteristics as well as pressure variation along the flow direction, are for the first time revealed and quantified. Large differences can be found comparing gas or larger-scale water flows through the same system. A new type of pressure variation curve along the axis of flow direction is found in the hydrophobic nanochannel with a sudden contraction/expansion. This work provides the fundamental understanding of water transport through the nanoscale system with contraction and expansion effects, giving implications to a wide range of industry applications.
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Affiliation(s)
- Tao Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Boning Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
- Chengdu North Petroleum Exploration and Development Technology Company Limited, Chengdu, Sichuan 610500, China
| | - Yulong Zhao
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Farzam Javadpour
- Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, University Station, Box X, Austin, Texas 78713, United States
| | - Xiao He
- PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, China
- Sichuan Changning Natural Gas Development Co., Ltd., Chengdu, Sichuan 610051, China
| | - Feng Ge
- PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, China
| | - Jianfa Wu
- PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, China
| | - Dongxu Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
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Williams RMJ, McKeage JW, Ruddy BP, Nielsen PMF, Taberner AJ. Viscous Heating Assists Jet Formation During Needle-Free Jet Injection of Viscous Drugs. IEEE Trans Biomed Eng 2019; 66:3472-3479. [DOI: 10.1109/tbme.2019.2906356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ferreira J, Castro F, Rocha F, Kuhn S. Protein crystallization in a droplet-based microfluidic device: Hydrodynamic analysis and study of the phase behaviour. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.06.066] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ward DM, Patras A, Kilonzo‐Nthenge A, Yannam SK, Pan C, Xiao H, Sasges M. UV‐C treatment on the safety of skim milk: Effect on microbial inactivation and cytotoxicity evaluation. J FOOD PROCESS ENG 2018. [DOI: 10.1111/jfpe.12944] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danielle M. Ward
- Department of Agricultural and Environmental Sciences Tennessee State University Nashville Tennessee
| | - Ankit Patras
- Department of Agricultural and Environmental Sciences Tennessee State University Nashville Tennessee
| | - Agnes Kilonzo‐Nthenge
- Department of Agricultural and Environmental Sciences Tennessee State University Nashville Tennessee
| | - Sudheer K. Yannam
- Department of Agricultural and Environmental Sciences Tennessee State University Nashville Tennessee
| | - Che Pan
- Department of Food Science University of Massachusetts Amherst Massachusetts
| | - Hang Xiao
- Department of Food Science University of Massachusetts Amherst Massachusetts
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Shaffer KR, Paterson AH, Davies CE, Hebbink G. Laminar flow continuous settling crystalliser. Part 1. Initial exploration. Int Dairy J 2017. [DOI: 10.1016/j.idairyj.2017.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Dean Flow Dynamics in Low-Aspect Ratio Spiral Microchannels. Sci Rep 2017; 7:44072. [PMID: 28281579 PMCID: PMC5345076 DOI: 10.1038/srep44072] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 02/01/2017] [Indexed: 12/23/2022] Open
Abstract
A wide range of microfluidic cell-sorting devices has emerged in recent years, based on both passive and active methods of separation. Curvilinear channel geometries are often used in these systems due to presence of secondary flows, which can provide high throughput and sorting efficiency. Most of these devices are designed on the assumption of two counter rotating Dean vortices present in the curved rectangular channels and existing in the state of steady rotation and amplitude. In this work, we investigate these secondary flows in low aspect ratio spiral rectangular microchannels and define their development with respect to the channel aspect ratio and Dean number. This work is the first to experimentally and numerically investigate Dean flows in microchannels for Re > 100, and show presence of secondary Dean vortices beyond a critical Dean number. We further demonstrate the impact of these multiple vortices on particle and cell focusing. Ultimately, this work offers new insights into secondary flow instabilities for low-aspect ratio, spiral microchannels, with improved flow models for design of more precise and efficient microfluidic devices for applications such as cell sorting and micromixing.
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Li Y, Reddy RK, Kumar CSSR, Nandakumar K. Computational investigations of the mixing performance inside liquid slugs generated by a microfluidic T-junction. BIOMICROFLUIDICS 2014; 8:054125. [PMID: 25538812 PMCID: PMC4241778 DOI: 10.1063/1.4900939] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 10/22/2014] [Indexed: 05/11/2023]
Abstract
Droplet-based microfluidics has gained extensive research interest as it overcomes several challenges confronted by conventional single-phase microfluidics. The mixing performance inside droplets/slugs is critical in many applications such as advanced material syntheses and in situ kinetic measurements. In order to understand the effects of operating conditions on the mixing performance inside liquid slugs generated by a microfluidic T-junction, we have adopted the volume of fluid method coupled with the species transport model to study and quantify the mixing efficiencies inside slugs. Our simulation results demonstrate that an efficient mixing process is achieved by the intimate collaboration of the twirling effect and the recirculating flow. Only if the reagents are distributed transversely by the twirling effect, the recirculating flow can bring in convection mechanism thus facilitating mixing. By comparing the mixing performance inside slugs at various operating conditions, we find that slug size plays the key role in influencing the mixing performance as it determines the amount of fluid to be distributed by the twirling effect. For the cases where short slugs are generated, the mixing process is governed by the fast convection mechanism because the twirling effect can distribute the fluid to the flow path of the recirculating flow effectively. For cases with long slugs, the mixing process is dominated by the slow diffusion mechanism since the twirling effect is insufficient to distribute the large amount of fluid. In addition, our results show that increasing the operating velocity has limited effects on improving the mixing performance. This study provides the insight of the mixing process and may benefit the design and operations of droplet-based microfluidics.
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Affiliation(s)
- Yuehao Li
- Cain Department of Chemical Engineering, Louisiana State University , Baton Rouge, Louisiana 70802, USA
| | - Rupesh K Reddy
- Cain Department of Chemical Engineering, Louisiana State University , Baton Rouge, Louisiana 70802, USA
| | - Challa S S R Kumar
- Center for Advanced Microstructures and Devices (CAMD), Louisiana State University , 6980 Jefferson Highway, Baton Rouge, Louisiana 70806, USA
| | - Krishnaswamy Nandakumar
- Cain Department of Chemical Engineering, Louisiana State University , Baton Rouge, Louisiana 70802, USA
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Seetha N, Mohan Kumar MS, Majid Hassanizadeh S, Raoof A. Virus-sized colloid transport in a single pore: model development and sensitivity analysis. JOURNAL OF CONTAMINANT HYDROLOGY 2014; 164:163-180. [PMID: 24992707 DOI: 10.1016/j.jconhyd.2014.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 05/13/2014] [Accepted: 05/26/2014] [Indexed: 06/03/2023]
Abstract
A mathematical model is developed to simulate the transport and deposition of virus-sized colloids in a cylindrical pore throat considering various processes such as advection, diffusion, colloid-collector surface interactions and hydrodynamic wall effects. The pore space is divided into three different regions, namely, bulk, diffusion and potential regions, based on the dominant processes acting in each of these regions. In the bulk region, colloid transport is governed by advection and diffusion whereas in the diffusion region, colloid mobility due to diffusion is retarded by hydrodynamic wall effects. Colloid-collector interaction forces dominate the transport in the potential region where colloid deposition occurs. The governing equations are non-dimensionalized and solved numerically. A sensitivity analysis indicates that the virus-sized colloid transport and deposition is significantly affected by various pore-scale parameters such as the surface potentials on colloid and collector, ionic strength of the solution, flow velocity, pore size and colloid size. The adsorbed concentration and hence, the favorability of the surface for adsorption increases with: (i) decreasing magnitude and ratio of surface potentials on colloid and collector, (ii) increasing ionic strength and (iii) increasing pore radius. The adsorbed concentration increases with increasing Pe, reaching a maximum value at Pe=0.1 and then decreases thereafter. Also, the colloid size significantly affects particle deposition with the adsorbed concentration increasing with increasing particle radius, reaching a maximum value at a particle radius of 100nm and then decreasing with increasing radius. System hydrodynamics is found to have a greater effect on larger particles than on smaller ones. The secondary minimum contribution to particle deposition has been found to increase as the favorability of the surface for adsorption decreases. The sensitivity of the model to a given parameter will be high if the conditions are favorable for adsorption. The results agree qualitatively with the column-scale experimental observations available in the literature. The current model forms the building block in upscaling colloid transport from pore scale to Darcy scale using Pore-Network Modeling.
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Affiliation(s)
- N Seetha
- Department of Civil Engineering, Indian Institute of Science, Bangalore 560012, India
| | - M S Mohan Kumar
- Department of Civil Engineering, IFCWS, Indian Institute of Science, Bangalore 560012, India.
| | - S Majid Hassanizadeh
- Department of Earth Sciences, Utrecht University, P.O. Box 80021, 3508 TA Utrecht, The Netherlands
| | - Amir Raoof
- Department of Earth Sciences, Utrecht University, P.O. Box 80021, 3508 TA Utrecht, The Netherlands
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Jumars PA. Boundary-trapped, inhalant siphon and drain flows: Pipe entry revisited numerically. ACTA ACUST UNITED AC 2013. [DOI: 10.1215/21573689-2082871] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Can T, Mingyan L, Yonggui X. 3-D numerical simulations on flow and mixing behaviors in gas-liquid-solid microchannels. AIChE J 2013. [DOI: 10.1002/aic.13980] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tang Can
- School of Chemical Engineering and Technology; Tianjin University; Tianjin; 300072; P.R. China
| | | | - Xu Yonggui
- School of Chemical Engineering and Technology; Tianjin University; Tianjin; 300072; P.R. China
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Hawkes JJ, Radel S. Acoustofluidics 22: multi-wavelength resonators, applications and considerations. LAB ON A CHIP 2013; 13:610-627. [PMID: 23291740 DOI: 10.1039/c2lc41206c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
One important niche for multi-wavelength resonators is the filtration of suspensions containing very high particle concentration. For some applications, multi-wavelength ultrasound enhanced sedimentation filters are second only to the centrifuge in efficiency but, unlike the centrifuge they are easily adapted for continuous flow. Multi-wavelength resonators are also an obvious consideration when half-wavelength chambers are too small for a specific application. Unfortunately the formula, bigger = higher-throughput, does not scale linearly. Here we describe the relationships between chamber size and throughput for acoustic, electrical, flow and thermal convection actions, allowing the user to define initial parameters for their specific applications with some confidence. We start with a review of some of the many forms of multi-wavelength particle manipulation systems.
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Affiliation(s)
- Jeremy J Hawkes
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
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13
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Reddy Cherlo SK, Pushpavanam S. Effect of depth on onset of engulfment in rectangular micro-channels. Chem Eng Sci 2010. [DOI: 10.1016/j.ces.2010.08.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Cherlo SKR, Kariveti S, Pushpavanam S. Experimental and Numerical Investigations of Two-Phase (Liquid−Liquid) Flow Behavior in Rectangular Microchannels. Ind Eng Chem Res 2009. [DOI: 10.1021/ie900555e] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Siva Kumar Reddy Cherlo
- Department of Chemical Engineering, Indian Institute of Technology Madras (I.I.T. Madras), Chennai 600036, India
| | - Sreenath Kariveti
- Department of Chemical Engineering, Indian Institute of Technology Madras (I.I.T. Madras), Chennai 600036, India
| | - S. Pushpavanam
- Department of Chemical Engineering, Indian Institute of Technology Madras (I.I.T. Madras), Chennai 600036, India
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Kudo S, Maki T, Kitao N, Mae K. Efficient Hydrogen Production from Methanol by Combining Micro Channel with Carbon Membrane Catalyst Loaded with Cu/Zn. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2009. [DOI: 10.1252/jcej.09we027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shinji Kudo
- Department of Chemical Engineering, Graduate School of Engineering, Kyoto University
| | - Taisuke Maki
- Department of Chemical Engineering, Graduate School of Engineering, Kyoto University
| | - Noriyuki Kitao
- Department of Chemical Engineering, Graduate School of Engineering, Kyoto University
| | - Kazuhiro Mae
- Department of Chemical Engineering, Graduate School of Engineering, Kyoto University
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Ookawara S, Ishikawa T, Ogawa K. Applicability of a Miniaturized Micro-Separator/Classifier to Oil-Water Separation. Chem Eng Technol 2007. [DOI: 10.1002/ceat.200600335] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Ookawara S, Street D, Ogawa K. Numerical study on development of particle concentration profiles in a curved microchannel. Chem Eng Sci 2006. [DOI: 10.1016/j.ces.2006.01.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Aoki N, Hasebe S, Mae K. Geometric design of fluid segments in microreactors using dimensionless numbers. AIChE J 2006. [DOI: 10.1002/aic.10727] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Oosthuizen P, Austin M. CHANNEL-TO-CHANNEL PRESSURE DIFFERENCES IN SERPENTINE MINICHANNEL FLOW SYSTEMS. ACTA ACUST UNITED AC 2005. [DOI: 10.1080/10893950590913341] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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OOKAWARA S, MINAMIMOTO K, OGAWA K. Stability of Interface between Two Liquids in T-shape Confluence of Microchannels. KAGAKU KOGAKU RONBUN 2004. [DOI: 10.1252/kakoronbunshu.30.148] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shinichi OOKAWARA
- Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
| | - Kana MINAMIMOTO
- Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
| | - Kohei OGAWA
- Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
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Ookawara S, Ogawa K, Dombrowski N, Amooie-Foumeny E, Riza A. Unified Entry Length Correlation for Newtonian, Power Law and Bingham Fluids in Laminar Pipe Flow at Low Reynolds Number. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2000. [DOI: 10.1252/jcej.33.675] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kohei Ogawa
- Department of Chemical Engineering, Tokyo Institute of Technology
| | | | | | - Ahmed Riza
- Department of Chemical Engineering, University of Leeds
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Kamholz AE, Weigl BH, Finlayson BA, Yager P. Quantitative analysis of molecular interaction in a microfluidic channel: the T-sensor. Anal Chem 1999; 71:5340-7. [PMID: 10596213 DOI: 10.1021/ac990504j] [Citation(s) in RCA: 477] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The T-sensor is a recently developed microfluidic chemical measurement device that exploits the low Reynolds number flow conditions in microfabricated channels. The interdiffusion and resulting chemical interaction of components from two or more input fluid streams can be monitored optically, allowing measurement of analyte concentrations on a continuous basis. In a simple form of T-sensor, the concentration of a target analyte is determined by measuring fluorescence intensity in a region where the analyte and a fluorescent indicator have interdiffused. An analytical model has been developed that predicts device behavior from the diffusion coefficients of the analyte, indicator, and analyte--indicator complex and from the kinetics of the complex formation. Diffusion coefficients depend on the local viscosity which, in turn, depends on local concentrations of all analytes. These relationships, as well as reaction equilibria, are often unknown. A rapid method for determining these unknown parameters by interpreting T-sensor experiments through the model is presented.
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Affiliation(s)
- A E Kamholz
- Department of Bioengineering, University of Washington, Seattle 98195, USA.
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