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Microfluidics devices also can simulate the tumor microenvironment, to help to test anticancer drugs. Microfluidic devices with 2D or 3D cell cultures can be used to analyze spheroids for different cancer systems (such as lung cancer and ovarian cancer), and are essential for multiple anti-cancer drugs and toxicity tests. This strategy can be ...
Bio-FETs couple a transistor device with a bio-sensitive layer that can specifically detect bio-molecules such as nucleic acids and proteins. A Bio-FET system consists of a semiconducting field-effect transistor that acts as a transducer separated by an insulator layer (e.g. SiO 2) from the biological recognition element (e.g. receptors or probe molecules) which are selective to the target ...
Droplet-based microfluidic devices coupled to HPLC have high detection sensitivity, use low volumes of reagents, have short analysis times, and minimal cross-contamination of analytes, which make them efficient in many aspects. [221]
Surface plasmon resonance sensors operate using a sensor chip consisting of a plastic cassette supporting a glass plate, one side of which is coated with a microscopic layer of gold. This side contacts the optical detection apparatus of the instrument. The opposite side is then contacted with a microfluidic flow system.
It is also cost-effective, has a high surface area to volume ratio, absorbs the sample efficiently, and is easily disposable by incineration. [1] [3] In general, settings with limited resources could benefit from low-cost, easy to use, on-site, and rapid testing of water samples. In addition, there is a need for home-care testing.
Digital microfluidics (DMF) is a platform for lab-on-a-chip systems that is based upon the manipulation of microdroplets. Droplets are dispensed, moved, stored, mixed, reacted, or analyzed on a platform with a set of insulated electrodes.
Achieving such high sensitivity involves enhancements to recognition elements, amplification, and signal processing techniques. The LoD (limit of detection) is used to determine the concrete value of sensitivity in biosensors, which indicates the lowest concentration of miRNA that can be separated from the background (zero) signal with a ...
An ideal device for multiplexed point-of-care testing should offer high sensitivity and the capability to process one sample using multiple types of tests. It should be capable of testing various kinds of substances at the same time, including proteins, drugs, RNAs and cells. A high sensor performance that requires small samples, short ...
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