Abstract:
PROBLEM TO BE SOLVED: To provide different chips functioned variously on the same wafer, without changing a production process. SOLUTION: In this method for depositing a material selectively on each electrode 21 of a biosensor or chip 20 formed of a single substrate 1, (a) the plurality of biosensors or chips 20, 30, 40, 50, 60, 70 having the plurality of electrodes 21, a plurality of address pads 23 and a plurality of address- recognizable address areas 22 are formed on the same substrate 1, (b) the biosensors or chips are brought selectively into an activated condition by a command word, (c) the material is deposited concurrently on the electrodes by electro-deposition, and (d) the step (b) and the step (c) are repeated with the required frequency required for the material deposition onto the plurality of other electrodes. COPYRIGHT: (C)2003,JPO
Abstract:
The present invention relates to a method for detecting a target biomolecule in a sample comprising a plurality of biomolecules, whereby the target biomolecule is provided with a tag, said tag comprising a catalytic active moiety which catalyses a reaction yielding an insoluble reaction product which precipitates on flexible electrically conductive nanoelectrodes. The precipitation onto said nanoelectrodes causes a change in their electroconductivity which is accessible to electroanalytical methods. The invention relates further to a a biochip comprising a solid support with nanoelectrodes attached thereto and probe molecules bound to all or to a plurality of said nanoelectrodes which may be the same or different, a segment of said probe molecules being able to interact specifically with a segment of the target biomolecules.
Abstract:
The invention relates to a biochip (1) comprising a support (2). One useful surface (2a) of the aforementioned support comprises an operating surface (3) having a network of basic sites (Xn) disposed thereon and numerous ligands which are fixed to the respectively different basic sites. The inventive biochip is characterised in that the basic sites are distributed between a central biological analysis area (4) and a peripheral area (5) which defines said central area and which comprises corners that are free of any basic sites.
Abstract:
The present invention relates to the process for the stepwise synthesis of polymers, especially biopolymers, on a solid support surface comprising the steps of providing a solid support surface having a binding site, applying a first microdroplet of a solution comprising a first polymer building block on said binding site to attach the first polymer building block to the binding site and applying to the modified binding site of the preceding step a second microdroplet of a solution comprising the same or a different polymer building block, wherein the solution comprises two different solvents wich have a different viscosity and its relative viscosity (? rel =? second solvent<
Abstract:
The present invention relates to an automated polymer synthesis apparatus for synthesizing a polymer chain onto a solid substrates by sequentially adding polymer building blocks as well as to a method for synthesizing polymers on solid substrates by sequentially reacting polymer building blocks with reactive groups. The invention further relates to a biochip comprising a solid substrate with reactive groups where biomolecules are attached to and the remaining reactive groups are transformed into chemically inert species.
Abstract:
The invention concerns a method for fixing by electrodeposition reagents on a planar surface (11) of a substrate (10), the planar surface having a plurality of sites (12) designed to be electrically polarized; said method comprises the following steps to be repeated as many times as necessary: depositing on the planar surface (11) a thin electrolyte film (17) containing a chemical species bearing a reagent and designed to be fixed by electrodeposition on at least one site (12); polarizing said site (12) and electrodeposition of said chemical species bearing the reagent on said site; rinsing the planar surface (11).
Abstract:
The present invention relates to an automated polymer synthesis apparatus for synthesizing a polymer chain onto a solid substrates by sequentially adding polymer building blocks as well as to a method for synthesizing polymers on solid substrates by sequentially reacting polymer building blocks with reactive groups. The invention further relates to a biochip comprising a solid substrate with reactive groups where biomolecules are attached to and the remaining reactive groups are transformed into chemically inert species.
Abstract:
Biochip (1) comprises a support (2) the functional side of which has a working surface (3) with a network of elementary sites (Xn), with many ligands, different for each Xn, attached to them. Biochip (1) comprises a support (2) the functional side of which has a working surface (3) with a network of elementary sites (Xn), with many ligands, different for each Xn, attached to them. The new feature is that Xn are distributed between: (i) a central zone (4), designed for detection of at least one target species, with each site containing ligands for a particular target; and (ii) a peripheral zone (5), surrounding (4) and containing control sites, which optionally carry control ligands.
Abstract:
A method for selective deposition of materials (I) on biocollectors or chips (BC/C's) formed on the same substrate. The method involves activation of electrodes, of particular BC/C's on which (I) is to be electrodeposited, using an addressing and command system. Selective deposition of materials (I) on biocollectors or chips (BC/C's) formed on the same substrate involves: (1) forming several BC/C's on the substrate, where: (a) each BC/C has electrodes (on which (I) is deposited), address terminals and an address zone (containing the programmed address of the BC/C, connected to the address terminals and able to recognize the address of the BC/C and activate the BC/C when the exact command is received by the address terminal); and (b) the substrate also includes connectors (specifically repeaters) for linking the address terminals and electrodes of each BC/C to an addressing/activating system; (2) addressing the BC/C's on which (I) is to be deposited by sending suitable commands for successive activation of the BC/C's and connecting the electrodes to receive (I) to polarizing systems by addressing these electrodes; (3) depositing (I) simultaneously on the relevant electrodes by electrodeposition; and (4) repeating steps (2) and (3) as many times as necessary.