Results 41 to 50 of about 4,425 (180)

Discriminating Between Living and Dead Bacteria With a Field‐Effect Transistor Based on Nano‐Channels

open access: yesSmall, EarlyView.
Bacterial viability is determined in a complex environment with a field‐effect biological transistor with a limit of detection of a single bacterium. Living, antibiotic‐treated, thermally denatured, and inhibited E. coli generate distinct electrical signatures, enabling label‐free single‐cell detection and providing new opportunities for rapid ...
Bar Chen   +17 more
wiley   +1 more source

Nucleotide Identification in DNA Using Dielectrophoresis Spectroscopy

open access: yesMicromachines, 2019
We show that negative dielectrophoresis (DEP) spectroscopy is an effective transduction mechanism of a biosensor for the detection of single nucleotide polymorphism (SNP) in a short DNA strand. We observed a frequency dependence of the negative DEP force
Fleming Dackson Gudagunti   +3 more
doaj   +1 more source

How We Simulate Nanopores

open access: yesSmall Methods, EarlyView.
Nanopore technology has revolutionized single‐molecule sensing, yet it suffers from an inherent interpretive challenge. Molecular dynamics has emerged as a go‐to method for determining the relationship between the structure of translocating molecules and the nanopore current signals.
Behzad Mehrafrooz   +5 more
wiley   +1 more source

SU-8 Photolithography as a Toolbox for Carbon MEMS

open access: yesMicromachines, 2014
The use of SU-8 as precursor for glass-like carbon, or glassy carbon, is presented here. SU-8 carbonizes when subject to high temperature under inert atmosphere.
Rodrigo Martinez-Duarte
doaj   +1 more source

Dynamic Behaviour of Bubbles in Oil Under Electrothermal Ageing

open access: yesHigh Voltage, EarlyView.
ABSTRACT During long‐term operation of converter transformers, the internal oil–pressboard insulation undergoes irreversible degradation. Partial discharge in the weakened insulation will cause the formation of a large number of bubbles in the insulating oil.
Hongbin Wu   +7 more
wiley   +1 more source

Microarray Dot Electrodes Utilizing Dielectrophoresis for Cell Characterization

open access: yesSensors, 2013
During the last three decades; dielectrophoresis (DEP) has become a vital tool for cell manipulation and characterization due to its non-invasiveness. It is very useful in the trend towards point-of-care systems.
Fatimah Ibrahim   +2 more
doaj   +1 more source

Using a Dielectrophoretic Microfluidic Biochip Enhanced Fertilization of Mouse Embryo in Vitro

open access: yesMicromachines, 2020
Droplet microfluidics has appealed to many interests for its capability to epitomize cells in a microscale environment and it is also a forceful technique for high-throughput single-cell epitomization. A dielectrophoretic microfluidic system imitates the
Hong-Yuan Huang   +3 more
doaj   +1 more source

Understanding extracellular vesicle biology, isolation, and characterization: The theory of EV‐erything

open access: yesPeriodontology 2000, EarlyView.
Abstract Background Extracellular vesicles (EVs), especially exosomes, are nanoparticles increasingly recognized as key regulators of intercellular communication in both physiological and pathological aspects. Despite rapid progress, inconsistencies in nomenclature, isolation, and characterization continue to restrict translational advancement.
Paras Ahmad   +6 more
wiley   +1 more source

Microfluidic nanochips for rapid exosome isolation and multiplex biomarker profiling from a single blood drop: Toward sample‐to‐answer liquid biopsy

open access: yesClinical and Translational Discovery, Volume 6, Issue 4, August 2026.
A microfluidic nanodevice that analyses a single volume droplet of whole blood (10–50 microlitres (µL)) forms a fast and fully integrated exosome‐derived liquid biopsy. The closed system architecture involves plasma separation on chip, exosome enrichment by immunoaffinity and various size based, electrokinetic, acoustofluidic or hybridized strategies ...
Daniel Ejim Uti   +7 more
wiley   +1 more source

Computational Analysis of Enhanced Circulating Tumour Cell (CTC) Separation in a Microfluidic System with an Integrated Dielectrophoretic-Magnetophorectic (DEP-MAP) Technique

open access: yesChemosensors, 2016
Cell based cancer analysis is an important analytic method to monitor cancer progress on stages by detecting the density of circulating tumour cells (CTCs) in the blood.
Wan Shi Low, Nahrizul Adib Kadri
doaj   +1 more source

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