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38 results about "Ultramicroelectrode" patented technology
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An ultramicroelectrode (UME) is a working electrode used in a voltammetry. The small size of UME give them large diffusion layers and small overall currents. These features allow UME to achieve useful steady-state conditions and very high scan rates (V/s) with limited distortion. UME were developed independently by Wightman and Fleischmann around 1980. Small current at UME enables electrochemical measurements in low conductive media (organic solvents), where voltage drop associated with high solution resistance makes these experiments difficult for conventional electrodes. Furthermore, small voltage drop at UME leads to a very small voltage distortion at the electrode-solution interface which allows using two-electrode setup in voltammetric experiment instead of conventional three-electrode setup.
Preparation method of addressable disc ultramicro electrode array for electrochemical imaging
PendingCN121805367Aimprove consistencyImprove efficiencyMaterial electrochemical variablesMaterials sciencePhysical vapor deposition
The invention discloses a preparation method of an addressable disc ultramicro electrode array for electrochemical imaging, which comprises the following steps of: 1, preparing a nanowire array by using an ultrathin slicing machine as processing equipment and a silicon wafer with a micron groove array structure as a template; 2, transferring the nanowire array to a silicon wafer, performing three-dimensional alignment on a molybdenum mask plate with a lead pattern and the nanowire array, and realizing lap joint of a lead and the nanowire array and preparation of the lead by combining a physical vapor deposition method; 3, resin is poured on the silicon wafer for normal-temperature curing, and the pattern is transferred to the resin; 4, macroscopic wire lap joint and packaging are carried out, a resin block with an embedded array structure is obtained, the end face is trimmed through an ultra-thin slicing machine, the dot array is exposed, and preparation of the addressable disc ultramicro electrode array is completed. According to the method, the addressable disc ultramicro electrode array which is high in consistency, high in spatial resolution and capable of being expanded at will can be prepared simply and efficiently at low cost.
Owner:HARBIN INST OF TECH