Relevant bibliographies by topics / Electrophoresis

Academic literature on the topic 'Electrophoresis'

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Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Electrophoresis"

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Hassan, Sammer-ul. "Microchip Electrophoresis." Encyclopedia 1, no. 1 (December 23, 2020): 30–41. http://dx.doi.org/10.3390/encyclopedia1010006.

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Microchip electrophoresis (MCE) is a miniaturized form of capillary electrophoresis. Electrophoresis is a common technique to separate macromolecules such as nucleic acids (DNA, RNA) and proteins. This technique has become a routine method for DNA size fragmenting and separating protein mixtures in most laboratories around the world. The application of higher voltages in MCE achieves faster and efficient electrophoretic separations.
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Surh, Linda C., Gary G. Shutler, and Robert G. Korneluk. "Simple, Rapid Detection of PCR Heteroduplexes in DNA Mutations and Polymorphisms." Clinical Chemistry 37, no. 12 (December 1, 1991): 2142. http://dx.doi.org/10.1093/clinchem/37.12.2142.

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Abstract Detection of nucleotide differences is fundamental among diverse procedures used to study DNA mutations and polymorphisms, whether for basic molecular research or for diagnosis of genetic disorders. Rapid and efficient analysis without radioactive, chemical, or enzymatic modification is currently possible when polymerase chain reaction (PCR) products are electrophoresed on small polyacrylamide gels (5.0 cm × 4.3 cm × 0.45 mm) and stained with silver. The PhastSystemmTM (Pharmacia LKB Biotechnology, Uppsala, Sweden) was initially developed for protein electrophoresis/isoelectric focusing (1) and involves horizontal electrophoresis with an automated staining unit. We have adapted this system to heteroduplex formation of nucleic acids to detect the most frequent mutation in cystic fibrosis (CF), designated ΔF508 (2). This system offers the advantages and uniformity of semi-automated polyacrylamide electrophoresis in a DNA clinical laboratory and the convenience of precast polyacrylamide gels, rapid electrophoretic times (<30 min), and an automated developing chamber where picogram quantities of DNA can be reproducibly silver-stained. Because pre-packaged agarose buffer strips are used, one need not prepare buffer solutions.
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Koel, M., and M. Vaher. "Electrophoretic mobilities in nonaqueos capillary electrophoresis." Proceedings of the Estonian Academy of Sciences. Chemistry 53, no. 1 (2004): 36. http://dx.doi.org/10.3176/chem.2004.1.04.

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Zarubina, Anastasiya O., and Margarita Sergeevna Chernov'yants. "Aqueous and non-aqueous electrophoresis and micellar electrokinetic capillary chromatography of a mixture of quinoline-2-thione and 8-mercaptoquinoline hydrochloride." Analytical Methods 10, no. 12 (2018): 1399–404. http://dx.doi.org/10.1039/c7ay02875j.

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In this paper three variants of the electrophoretic method for the determination of thioamides, quinoline derivatives are given: aqueous capillary electrophoresis, micellar electrokinetic capillary chromatography and non-aqueous electrophoresis.
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Ohshima, Hiroyuki. "Transient Gel Electrophoresis of a Spherical Colloidal Particle." Gels 9, no. 5 (April 23, 2023): 356. http://dx.doi.org/10.3390/gels9050356.

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The general theory is developed for the time-dependent transient electrophoresis of a weakly charged spherical colloidal particle with an electrical double layer of arbitrary thickness in an uncharged or charged polymer gel medium. The Laplace transform of the transient electrophoretic mobility of the particle with respect to time is derived by considering the long-range hydrodynamic interaction between the particle and the polymer gel medium on the basis of the Brinkman–Debye–Bueche model. According to the obtained Laplace transform of the particle’s transient electrophoretic mobility, the transient gel electrophoretic mobility approaches the steady gel electrophoretic mobility as time approaches infinity. The present theory of the transient gel electrophoresis also covers the transient free-solution electrophoresis as its limiting case. It is shown that the relaxation time for the transient gel electrophoretic mobility to reach its steady value is shorter than that of the transient free-solution electrophoretic mobility and becomes shorter as the Brinkman screening length decreases. Some limiting or approximate expressions are derived for the Laplace transform of the transient gel electrophoretic mobility.
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Manoussopoulos, I. N., E. Maiss, and M. Tsagris. "Native electrophoresis and Western blot analysis (NEWeB): a method for characterization of different forms of potyvirus particles and similar nucleoprotein complexes in extracts of infected plant tissues." Journal of General Virology 81, no. 9 (September 1, 2000): 2295–98. http://dx.doi.org/10.1099/0022-1317-81-9-2295.

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A combination of native electrophoresis and immunodetection (Western blot) was used for the characterization of nucleoprotein particles of the potyvirus Plum pox virus (PPV). Virus particles were electrophoresed directly from plant extracts in agarose or mixed acrylamide–agarose gels under native conditions, blotted on nitrocellulose membranes, and characterized with the aid of a coat protein-specific antibody. Using this combined methodology, called NEWeB (native electrophoresis and Western blotting), we could show that a population of particles that differ in their electrophoretic mobility can be detected in extracts of Nicotiana benthamiana, that two different strains of PPV can be distinguished in double infections of the same plant and that virus particles from leaves contain detectable levels of helper component proteinase molecules. The potential of the NEWeB method for the study of structure and function of virus particles and similar nucleoprotein complexes in single and mixed infections is discussed.
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Pauwels, Jochen, and Ann Schepdael. "Carbon nanotubes in capillary electrophoresis, capillary electrochromatography and microchip electrophoresis." Open Chemistry 10, no. 3 (June 1, 2012): 785–801. http://dx.doi.org/10.2478/s11532-012-0014-5.

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AbstractCarbon nanotubes are among the plethora of novel nanostructures developed since the 1980s. Nanotubes have attracted considerable interest by the scientific community thanks to their extraordinary physical and chemical properties. Research areas have flourished in recent years and now include the nano-electronic, (bio)sensor and analytical field along with many others. This review covers applications of carbon nanotubes in capillary electrophoresis, capillary electrochromatography and microchip electrophoresis. First, carbon nanotubes and a range of electrophoretic techniques are briefly introduced and key references are mentioned. Next, a comprehensive survey of achievements in the field is presented and critically assessed. The merits and downsides of carbon nanotube addition to the various capillary electrophoretic modes are addressed. The different schemes for fabricating electrochromatographic stationary phases based on carbon nanotubes are discussed. Finally, some future perspectives are offered.
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Sajjadi, Sayyed Hashem, Hossein Ahmadzadeh, and Elaheh K. Goharshadi. "Enhanced electrophoretic separation of proteins by tethered SiO2 nanoparticles in an SDS-polyacrylamide gel network." Analyst 145, no. 2 (2020): 415–23. http://dx.doi.org/10.1039/c9an01759c.

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Tethered nanoparticles (NPs) are able to improve the separation efficiency of proteins in SDS-polyacrylamide gel electrophoresis (SDS-PAGE) due to their capability of enhancing heat dissipation during electrophoresis and restriction of electrophoretic movement of NPs.
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Barbosa, J., D. Barrón, and E. Jiménez-Lozano. "Electrophoretic behaviour of quinolones in capillary electrophoresis." Journal of Chromatography A 839, no. 1-2 (April 1999): 183–92. http://dx.doi.org/10.1016/s0021-9673(99)00093-x.

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Sanz-Nebot, V., F. Benavente, I. Toro, and J. Barbosa. "Electrophoretic behavior of peptides in capillary electrophoresis." Journal of Chromatography A 921, no. 1 (June 2001): 69–79. http://dx.doi.org/10.1016/s0021-9673(01)00730-0.

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Dissertations / Theses on the topic "Electrophoresis"

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Fu, Shilin. "Prediction of electrophoretic mobilities in capillary zone electrophoresis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31347.pdf.

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Vuorensola, Katariina. "Capillary electrophoresis and capillary electrophoresis-mass spectrometry in catecholamine studies." Helsinki : University of Helsinki, 2002. http://ethesis.helsinki.fi/julkaisut/mat/kemia/vk/vuorensola/.

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Baratuci, William Brian. "Counteracting flow electrophoresis." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1055352218.

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Zha, Wuyi. "Velocity-difference induced focusing in capillary electrophoresis and preparative capillary electrophoresis." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/448.

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Velocity-difference induced focusing (V-DIF) with a dynamic pH junction in capillary electrophoresis (CE) using a sample with a pH different from that of the background electrolyte (BGE) was developed in our group, but the mechanism was not well understood. In this work, the mechanism of this focusing technique was first studied using an appropriate dye to monitor the pH of the BGE and the sample during the focusing process. A mechanism was proposed based on the experimental results. This technique was then applied to serotonin to improve the detection limit when CE was used with a UV absorption detector. It was also applied to focus amino acids, peptides, and proteins to improve the concentration sensitivity. It is found that the pKa rather than the pI of the analytes is the key criterion for selecting the pH for the sample and for the BGE to obtain the optimum focusing for these molecules. Since UV detection only provides migration time information, more structure information is obtained by using a photodiode array (PDA) and mass spectrometer (MS) for peak identification. Comparisons were made between the PDA detection and MS detection for aromatic amino acids with V-DIF using a dynamic pH junction. This V-DIF technique was then applied to non-aromatic amino acids with MS detection. It was used at low pH with positive ESI-MS detection and at high pH with negative ESI-MS ionization. The results of the two methods were compared and discussed. Finally, the preparative operation of continuous flow counterbalanced CE (FCCE) was studied. The effects of larger sample volumes and multiple capillary systems on improving the purification yield were investigated.
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Xu, Aoshuang. "Development in electrophoresis instrumentation for two-dimensional gel electrophoresis of protein separation and application of capillary electrophoresis in micro-bioanalysis /." [Ames, Iowa : Iowa State University], 2008.

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Liang, Yufu. "Chiral Separation Using Capillary Electrophoresis (CE) and Continuous Free Flow Electrophoresis (CFFE)." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1067615432.

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McCormack, Kathleen Anne. "Capillary electrophoresis and electrochromatography." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/11108.

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Yurdakul, Saruhan. "Electrophoresis of electrogenerated bubbles." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/58542.

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The fundamental understanding of the interfacial charge on gas bubbles and the consequences of such charge are essential in understanding the behaviour of physicochemical systems involving liquid/gas and solid/liquid/gas interfaces. Such interfaces are involved in many industrial processes such as electrolytic gas evolution, particle flotation and bubble coalescence. The knowledge of such interfaces will aid mass transfer calculations. This thesis describes the application of a laser Doppler anemometer (LDA) system to the measurement of bubble electrophoretic mobilities, giving a measure of adsorbed charge. Single bubbles were electrogenerated in surfactant-free electrolytes, characterised by bubble rise rates, and their behaviour investigated in an electric field applied parallel to the direction of rise, so that, depending on the field direction, an increase or a decrease in the rise velocities was obtained. This field orientation served to decouple the hydrodynamic and field-induced charge polarisation. The velocity measurements using LDA showed a large degree of scatter despite numerous modifications to the optics and the signal processing. This culminated in the belief that a double LDA system was necessary to optimise the reliability and accuracy of the technique. Measurements using a Kodak high speed camera and recording system showed that the bubbles were negatively charged over the pH range studied (3-11), as indicated by their migration towards the anode under the influence of an applied electric field, with mobilities showing a radius and field dependence, implying that the adsorbed charge at the gas/electrolyte interface was mobile and polarisable. Large mobilities (10-60 x 10"® m2 s"^ V"^) were observed in comparison with results from previous bubble electrophoresis experiments with lateral fields. This was explained in terms of the enhanced charge polarisation occurring in the parallel electric field to the rise vector. A qualitative explanation for the decoupling of the hydrodynamic and field-induced charge polarisation has also been provided. In a separate series of experiments, under sufficient field conditions to overcome buoyancy forces, rising bubbles were stopped and held stationary. It was shown by extrapolation that bubbles possessed an iso electric point between pH 2 and 3, being positively charged below pH 2 and negatively charged above pH 3, supporting the hypothesis that the preferential adsorption of OH /H+ ions gives rise to the net charge. A laser reflection technique was investigated to measure the thickness of a liquid film formed between a bubble and the planar gas/electrolyte interface when they are in close proximity of each other. Preliminary investigations on macroscopic soap films showed the technique to be suitable for studying film thinning rates, though further refinement is necessary to study microscopic transient films. Electrophoresis measurements using a high speed camera have shown that bubbles preferentially adsorbed OH-/H+ ions from the solution in the absence of surfactants. This charge resided on a highly mobile interface and could be polarised by the actions of the hydrodynamics and the electric field. The laser Doppler anemometer system requires further development to achieve more accurate bubble velocity profiles in order to detect the small changes that occur.
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Pálmarsdóttir, Sveinbjörg. "Procedures for sample clean-up and concentration in capillary zone electrophoresis for determination of drugs in biosamples." Lund : Dept. of Aanalytical Chemistry, University of Lund, 1996. http://catalog.hathitrust.org/api/volumes/oclc/38045310.html.

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McKillop, Andrew G. "Ion mobilities in capillary electrophoresis." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/28235.

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The project has investigated the electrophoretic mobilities of sets of model compounds to determine the effects of size and shape on ion mobilities. Methods were developed for the analysis of compounds in order to quote accurate electrophoretic mobilities. Using the obtained electrophoretic mobilities mobility orders were correlated with structural properties.
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Books on the topic "Electrophoresis"

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Li, S. F. Y. Capillary electrophoresis: Principles, practice, and applications. Amsterdam: Elsevier, 1992.

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Baker, Dale R. Capillary electrophoresis. New York: Wiley, 1995.

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Hawcroft, David M. Electrophoresis. Oxford: IRL Press at Oxford University Press, 1997.

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Melvin, Maureen. Electrophoresis. Edited by Kealey D and ACOL (Project). Chichester [West Sussex]: Published on behalf of ACOL, London, by Wiley, 1987.

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1941-, Bauer Johann, ed. Cell electrophoresis. Boca Raton: CRC Press, 1994.

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García, Carlos D., Karin Y. Chumbimuni-Torres, and Emanuel Carrilho, eds. Capillary Electrophoresis and Microchip Capillary Electrophoresis. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118530009.

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Kurien, Biji T., and R. Hal Scofield, eds. Protein Electrophoresis. Totowa, NJ: Humana Press, 2012. http://dx.doi.org/10.1007/978-1-61779-821-4.

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Hanada, Katsuhiro, ed. DNA Electrophoresis. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0323-9.

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Makovets, Svetlana, ed. DNA Electrophoresis. Totowa, NJ: Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-565-1.

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Schmitt-Kopplin, Philippe, ed. Capillary Electrophoresis. Totowa, NJ: Humana Press, 2008. http://dx.doi.org/10.1007/978-1-59745-376-9.

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Book chapters on the topic "Electrophoresis"

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Vojtíšková, Marie. "Electrophoresis." In Experimental Techniques in Bioelectrochemistry, 489–526. Basel: Birkhäuser Basel, 1995. http://dx.doi.org/10.1007/978-3-0348-7607-0_8.

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Dorfman, Kevin D. "Electrophoresis." In Encyclopedia of Microfluidics and Nanofluidics, 926–34. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-5491-5_453.

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Buxbaum, Engelbert. "Electrophoresis." In Biophysical Chemistry of Proteins, 61–95. Boston, MA: Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-7251-4_8.

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Pomeranz, Yeshajahu, and Clifton E. Meloan. "Electrophoresis." In Food Analysis, 208–27. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-6998-5_15.

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Gordon, M. H., and R. Macrae. "Electrophoresis." In Instrumental Analysis in the Biological Sciences, 67–82. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4684-1521-6_4.

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Dennison, Clive. "Electrophoresis." In A Guide to Protein Isolation, 139–77. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0269-0_6.

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Kish, Adrienne. "Electrophoresis." In Encyclopedia of Astrobiology, 718–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_500.

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Charcosset, Catherine. "Electrophoresis." In Encyclopedia of Membranes, 655–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_206.

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Dorfman, Kevin D. "Electrophoresis." In Encyclopedia of Microfluidics and Nanofluidics, 1–12. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-3-642-27758-0_453-2.

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Kish, Adrienne. "Electrophoresis." In Encyclopedia of Astrobiology, 484. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_500.

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Conference papers on the topic "Electrophoresis"

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RICHMAN, DAVID. "Microgravity electrophoresis." In 26th Aerospace Sciences Meeting. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-71.

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Pennathur, Sumita, Fabio Baldessari, Mike Kattah, Paul J. Utz, and Juan G. Santiago. "Electrophoresis in Nanochannels." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98558.

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Micro- and nanofabrication technology enables the application of electrokinetics as a method of performing chemical analyses and achieving liquid pumping in electronically-controlled microchip systems with no moving parts. We are studying and leveraging the unique separation modalities offered by nanoscale electrokinetic channels. We report analytical, numerical, and experimental investigations of nanochannel electrophoretic transport and separation dynamics of neutral and charged analytes. Our study includes continuum-theory-based analytical and numerical studies of nanofluidic electrophoretic separation dynamics, as well as experimental validation of these models. We have used 40, 100, and 1,560 nm deep channels etched in fused silica to independently measure mobility and valence of small ions. We also use these devices to separate 10 to 100 base pair DNA in the absence of a gel separation matrix. The effective free-solution mobilities of the ds-DNA oligonucleotides measured in 1560 nm deep channel are consistent with reported literature values, while smaller values of the mobility were measured for 4o nm deep channels for the same charge-species. The goal of our work is to explore and exploit electrokinetic flow regimes with extreme scales of length and charge density.
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Ohara, T., and A. Majumdar. "Ratcheting Electrophoresis Microchip (REM) for Programmable Transport and Separation of Macromolecules." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/mems-23888.

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Abstract This paper introduces the concept of a ratcheting electrophoresis microchip (REM), a microfluidic device for electrophoretic separation of macromolecules such as DNA and proteins in aqueous solution using low applied voltages (∼ 1 V). The device consists of several thousands of parallel linear electrodes with a constant pitch of about 10 μm. A spatial saw-tooth like potential distribution generated by the electrode array causes local electrophoretic migration of charged molecules between adjacent electrodes. By cycling the potential distribution in a certain pattern, the spatio-temporal electrophoretic ratchet can be used to separate and manipulate macromolecules at speeds much faster than thermal ratchets or more traditional techniques such as capillary or gel electrophoresis. This paper describes results of two simulations: First, using a simple one-dimensional potential distribution for the ratchet, the basic device function is examined using a probabilistic approach that simulates the interplay between electrophoretic mobility and molecular diffusion. The results suggest that the REM can function as a molecular filter through which only molecules having mobility larger than a threshold can pass. The REM can also be programmed to separate molecules to create a molecular profile, much like conventional electrophoresis. Second, two-dimensional stochastic simulations based on molecular diffusion and transient Debye screening by mobile ions are used to demonstrate the feasibility of the REM. The results suggest that biomolecular separation can indeed be achieved within time and length scales much shorter than capillary and gel electrophoresis.
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David, Regis A., Justin L. Black, Brian D. Jensen, and Sandra H. Burnett. "Modeling and Experimental Validation of DNA Motion During Electrophoresis." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28541.

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This paper describes the protocol and presents the results for DNA motion experiments using fabricated macroscale gel electrophoresis devices. Gel electrophoresis is a process used to separate/move DNA, RNA or protein molecules using an electric field through a gel matrix (electrolytic solution). In electrolytic solutions, the current conduction is due to a transport of ions (anions and cations). A better understanding of electrophoretic fundamentals allows for modeling the motion of DNA during electrophoresis. The model is validated through comparison with the experimental results. The model and experimental validation will be used to improve the process of cellular nanoinjection of DNA, currently in development in our lab.
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Swarner, Susan. "Fluorescence Detection In Electrophoresis." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by E. R. Menzel. SPIE, 1988. http://dx.doi.org/10.1117/12.945436.

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Snyder, Robert S. "Electrophoresis experiments for space." In HADRONS AND NUCLEI: First International Symposium. AIP, 2000. http://dx.doi.org/10.1063/1.1302540.

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Mathies, R. A., E. T. Lagally, T. Kamei, W. H. Grover, C. N. Liu, J. R. Scherer, and R. A. Street. "Capillary Array Electrophoresis Bioprocessors." In 2002 Solid-State, Actuators, and Microsystems Workshop. San Diego, CA USA: Transducer Research Foundation, Inc., 2002. http://dx.doi.org/10.31438/trf.hh2002.29.

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Jacobson, Stephen C., Christopher T. Culbertson, and J. Michael Ramsey. "High Speed Microchip Electrophoresis." In Laser Applications to Chemical and Environmental Analysis. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/lacea.1998.lmb.3.

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Open tubular separations in the liquid phase including capillary electrophoresis are conventionally practiced in capillary tubes with diameters of tens of micrometers and lengths of tens of centimeters. Structures having similar dimensions can be fabricated on planar substrates using micromachining techniques. Microfabricated separation devices have been demonstrated for capillary electrophoresis,1 2 synchronized cyclic electrophoresis,3 and free-flow electrophoresis.4 The separation performance hinges upon minimizing the spatial extent of the injection plug and detector observation region, and optimizing the separation field strength. The injection plug width can be minimized by fabricating narrow channel dimensions for the injection valve, and the detector observation region can be minimized by having a small excitation volume or tight spatial filtering for fluorescence detection. For high speed separations, the separation column does not have to be long, e.g., < 1 mm long. Unfortunately, the footprint of these microfluidic devices is usually > 200 mm2, but the channel manifold can be designed such that the potential drop is small in areas not contributing to the separation. This results in a maximum field strength in the separation column. Because the resistance in the channel is proportional to the length and inversely proportional to the cross-sectional area, thin channels are fabricated for the injection valve and separation column, and wide channels for all other sections of the channel manifold.
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Cui, Huanchun, Prashanta Dutta, and Cornelius F. Ivory. "An Automated Valve for Dispersion Control in On-Chip Electrophoresis." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41332.

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Band dispersion and sample loss into a side channel is a major problem when an electrokinetically-mobilized concentration zone passes a T-junction in a networked microfluidic chip. The band dispersion can be minimized in linear electrophoretic systems such as zone electrophoresis and moving boundary electrophoresis by applying a constant additional electric field in the side channel. However, constant valve voltages have shown to provide unsatisfactory valve performance during nonlinear electrophoresis (isotachophoresis). In this study, an automated valve system was developed to reduce the band dispersion at the intersection during non-linear electrophoresis. The automated valve consists of two integrated microelectrodes and a control system. With the automated control system, two integrated microelectrodes provide an effective way to manipulate current streamlines, thus acting as a non-mechanical valve for charged species in electrokinetic separations. Experimental results with this non-mechanical valve show decreased dispersion and increased reproducibility as protein zones isotachophoretically passed the T-junction.
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Lin, David C., Noshir A. Langrana, and Bernard Yurke. "The Migration of DNA Into a DNA-Crosslinked Gel Using Electrophoresis." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43446.

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DNA-crosslinked polyacrylamide gels are polymeric electrolytes by virtue of the fact that DNA is negatively charged in an aqueous solution. As such, their mechanical properties can be altered by electrophoretic and electro-osmotic effects. Hybridization of single-stranded DNA with single-stranded sections of the crosslinks provides a novel means of altering gel mechanical properties. As a step toward exploring this means of altering gel mechanical properties, we report here on a study of the use of electrophoresis to introduce single stranded DNA into DNA crosslinked gels. Changes in elastic properties of the gel, before and after electrophoresis, were measured.
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Reports on the topic "Electrophoresis"

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RAFAILOVICH, MIRIAM, JONATHAN SOKOLOV, and DILIP GERSAPPE. DNA ELECTROPHORESIS AT SURFACES. Office of Scientific and Technical Information (OSTI), September 2003. http://dx.doi.org/10.2172/900195.

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Xu, Aoshuang. Development in electrophoresis: instrumentation for two-dimensional gel electrophoresis of protein separation and application of capillary electrophoresis in micro-bioanalysis. Office of Scientific and Technical Information (OSTI), January 2008. http://dx.doi.org/10.2172/1342558.

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Sepaniak, M. J. Capillary Electrophoresis - Optical Detection Systems. Office of Scientific and Technical Information (OSTI), August 2001. http://dx.doi.org/10.2172/836641.

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Castro, A., and E. B. Shera. Single-molecule electrophoresis. Final report. Office of Scientific and Technical Information (OSTI), May 1996. http://dx.doi.org/10.2172/272560.

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Zhang, N. DNA typing by capillary electrophoresis. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/587953.

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Dr. Barry Karger. DNA Sequencing Using capillary Electrophoresis. Office of Scientific and Technical Information (OSTI), May 2011. http://dx.doi.org/10.2172/1013010.

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Tollaksen, S. L., and C. S. Giometti. Procedures for two-dimensional electrophoresis of proteins. Office of Scientific and Technical Information (OSTI), October 1996. http://dx.doi.org/10.2172/505307.

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Xue, Yongjun. Novel absorption detection techniques for capillary electrophoresis. Office of Scientific and Technical Information (OSTI), July 1994. http://dx.doi.org/10.2172/10190663.

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Dorsey, John G. Octanol-Water Partition Coefficients by Capillary Electrophoresis. Fort Belvoir, VA: Defense Technical Information Center, January 1996. http://dx.doi.org/10.21236/ada335729.

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Dorsey, John G. Octanol-Water Partition Coefficients by Capillary Electrophoresis. Fort Belvoir, VA: Defense Technical Information Center, June 1997. http://dx.doi.org/10.21236/ada339212.

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