Results 21 to 30 of about 53,001 (261)

Recent Advances in Paper-Based Sensors

open access: yesSensors, 2012
Paper-based sensors are a new alternative technology for fabricating simple, low-cost, portable and disposable analytical devices for many application areas including clinical diagnosis, food quality control and environmental monitoring.
Edith Chow   +3 more
doaj   +1 more source

A smog chamber comparison of a microfluidic derivatization measurement of gas-phase glyoxal and methylglyoxal with other analytical techniques [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
Abstract. A microfluidic lab-on-a-chip derivatization technique has been developed to measure part per billion volume (ppbV) mixing ratios of gaseous glyoxal (GLY) and methylglyoxal (MGLY), and the method compared with other techniques in a smog chamber experiment.
X. Pang   +12 more
openaire   +7 more sources

Microfluidic cartridge with integrated array of amorphous silicon photosensors for chemiluminescence detection of viral DNA [PDF]

open access: yes, 2016
Portable and simple analytical devices based on microfluidics with chemiluminescence detection are particularly attractive for point-of-care applications, offering high detectability and specificity in a simple and miniaturized analytical format ...
Bonvicini, F.   +7 more
core   +1 more source

Integrated Microprisms Matrix for Coupling a Laser Beam in Microfluidic Systems

open access: yesProceedings, 2018
It is still a challenge to integrate the optoelectronic technology in microfluidic analytical systems, due to the complex alignment of the optical components within the microchip, or expensive and complicated methods of their fabrication.
Aleksandra Pokrzywnicka, Rafał Walczak
doaj   +1 more source

Closable Valves and Channels for Polymeric Microfluidic Devices

open access: yesMicromachines, 2020
This study explores three unique approaches for closing valves and channels within microfluidic systems, specifically multilayer, centrifugally driven polymeric devices. Precise control over the cessation of liquid movement is achieved through either the
Charles P. Clark   +5 more
doaj   +1 more source

Biofunctionalized all-polymer photonic lab on a chip with integrated solid-state light emitter [PDF]

open access: yes, 2015
A photonic lab on a chip (PhLOC), comprising a solid-state light emitter (SSLE) aligned with a biofunctionalized optofluidic multiple internal reflection (MIR) system, is presented.
Büttgenbach, Stephanus   +6 more
core   +1 more source

Paper-based microfluidic devices: Fabrication, detection, and significant applications in various fields

open access: yesReviews in Analytical Chemistry, 2022
Paper is the most abundant and inexpensive polymeric structure of cellulose available. Paper has micro-porous capillary-like networks which are responsible for flow of solvents instead of pumps or electronic power, making paper an ideally usable tool ...
Das Shibam, Gagandeep, Bhatia Rohit
doaj   +1 more source

Biosensors for cardiac biomarkers detection: a review [PDF]

open access: yes, 2012
The cardiovascular disease (CVD) is considered as a major threat to global health. Therefore, there is a growing demand for a range of portable, rapid and low cost biosensing devices for the detection of CVD.
Gurbuz, Yasar   +3 more
core   +1 more source

Recent developments in microfluidic paper-, cloth-, and thread-based electrochemical devices for analytical chemistry

open access: yesReviews in Analytical Chemistry, 2017
The attractive structural and mechanical properties of cellulose substrates (paper, cloth, and thread), including passive fluid transport, biocompatibility, durability, and flexibility, have attracted researchers in the past few decades to explore them ...
Malon Radha S.P.   +2 more
doaj   +1 more source

Microcontact Processing for Microtechnology and Biology

open access: yesCHIMIA, 2007
Processes occurring on surfaces are ubiquitous both in everyday life and in the research activities of many scientists. When these processes can be mastered with sufficient spatial resolution, they are employed for the manufacture of electronic ...
Emmanuel Delamarche
doaj   +1 more source

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