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Bead probe technology is a probing method used to connect electronic test equipment to the device under test (DUT) within a bed of nails fixture. The technique was first used in the 1990s [ 3 ] and originally given the name “Waygood Bump” after one of the main proponents, Rex Waygood.
A common form of in-circuit testing uses a bed-of-nails tester.This is a fixture that uses an array of spring-loaded pins known as "pogo pins". When a printed circuit board is aligned with and pressed down onto the bed-of-nails tester, the pins make electrical contact with locations on the circuit board, allowing them to be used as test points for in-circuit testing.
Overview of the suspension array technology procedures, using DNA hybridization as a model. DNA is extracted from cells used to create test fragments. These test fragments are added to a solution containing a variety of microsphere beads. Each type of microsphere bead contains a known DNA probe with a unique fluorescent identity. Test fragments ...
On the chip, there are two bead types for each CpG (or "CG", as per Figure 1) site per locus. Each locus tested is differentiated by different bead types. [1] Both bead types are attached to single-stranded 50-mer DNA oligonucleotides that differ in sequence only at the free end; this type of probe is known as an allele-specific oligonucleotide ...
Spring loaded pins are a component of the bed of nails tester. A bed of nails tester is a traditional electronic test fixture used for in-circuit testing.It has pins inserted into holes in an epoxy phenolic glass cloth laminated sheet (G-10) which are aligned using tooling pins to make contact with test points on a printed circuit board and are also connected to a measuring unit by wires.
Bead probe technology; Blind via; Board-to-board connector; Boundary scan; Boundary scan description language; Buried via; C. Capped via; Castellated hole;
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Digital bioassay is an example of using protein microarray for diagnostic purposes. In this technology, an array of microwells on a glass/polymer chip are seeded with magnetic beads (coated with fluorescent tagged antibodies), subjected to targeted antigens and then characterised by a microscope through counting fluorescing wells.