scholarly journals Periodic concentration–polarization-based formation of a biomolecule preconcentrate for enhanced biosensing

Nanoscale ◽  
2020 ◽  
Vol 12 (46) ◽  
pp. 23586-23595
Author(s):  
Sinwook Park ◽  
Keren Buhnik-Rosenblau ◽  
Ramadan Abu-Rjal ◽  
Yechezkel Kashi ◽  
Gilad Yossifon
Keyword(s):  
Concentration Polarization ◽  
Magnetic Bead ◽  
Sandwich Immunoassay

Periodic concentration–polarization-based formation of a preconcentrated biomolecule plug using the sandwich immunoassay approach, wherein the target biomolecules bind between immobilized magnetic bead-conjugated antibodies and reporter antibodies.

Effect of the membrane potential on the performance of ultrafiltration membranes

1986 ◽  
Vol 51 (3) ◽  
pp. 539-544 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Jaromír Lukáš ◽  
Jiří Vacík ◽  
Volker Gröbe
Keyword(s):  
Membrane Potential ◽  
Concentration Polarization ◽  
Ultrafiltration Membranes ◽  
Membrane Cleaning ◽  
Gel Layer ◽  
Charged Membrane ◽  
Protein Molecules ◽  
Polysulfone Membranes ◽  
Pressure Driven

In the pressure driven process the performance of membranes for ultrafiltration can be changed by incorporating charged groups into the membranes. sulfonation of polysulfone membranes the membrane potential is varied. On interaction of the negatively charged membrane with positively or negatively charged protein molecules the formation of a concentration polarization gel layer proceeds at different rate. Thus, the performance of the membrane can be controlled by the membrane potential. The dependence of the performance on the potential is discussed and procedures for membrane cleaning are suggested.

scholarly journals Magnetic Bead-Based Immunoassay Allows Rapid, Inexpensive, and Quantitative Detection of Human SARS-CoV-2 Antibodies

ACS Sensors ◽  
2021 ◽  
Author(s):  
Luciano F. Huergo ◽  
Khaled A. Selim ◽  
Marcelo S. Conzentino ◽  
Edileusa C. M. Gerhardt ◽  
Adrian R. S. Santos ◽  
...  
Keyword(s):  
Magnetic Bead ◽  
Quantitative Detection

An Enhanced Open Sandwich Immunoassay by Molecular Evolution for Noncompetitive Detection of Alternaria Mycotoxin Tenuazonic Acid

2021 ◽  
pp. 130103
Author(s):  
Yifan Liang ◽  
Yu Wang ◽  
Feng Wang ◽  
Jiadong Li ◽  
Chenglong Wang ◽  
...  
Keyword(s):  
Molecular Evolution ◽  
Sandwich Immunoassay ◽  
Tenuazonic Acid
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