Patent ID: 8276539
Filing Date: 2012-10-02
Classification: B05B,G01N

Abstract:
1. An observation sample preparation apparatus, preparing an observation sample by immobilizing a nanomaterial on an observation substrate, the preparation apparatus comprising: an electrostatic spray nozzle, comprising a nozzle body, having a tubular structure capable of storing, in an interior thereof, a nanomaterial dispersion liquid, in which a nanomaterial is dispersed in a solvent, and having a dispersion liquid spray outlet, provided at a tip of the tubular structure, for electrostatically spraying the nanomaterial dispersion liquid; a substrate support, supporting an observation substrate, which includes a conductive grid portion having a mesh-like form with one or a plurality of openings and a nanomaterial supporting film disposed at the opening of the grid portion and on which the nanomaterial to be observed is immobilized, so that the observation substrate opposes the dispersion liquid spray outlet of the electrostatic spray nozzle; a reference electrode, disposed at an opposite side of the observation substrate from the electrostatic spray nozzle and so as to be spaced apart from the observation substrate and electrically connected to a reference potential; a spraying voltage applying unit, applying an electrostatic spraying voltage between the nanomaterial dispersion liquid and the reference electrode; an adjustment voltage applying unit, applying a bias voltage, of the same polarity as the electrostatic spraying voltage and used for adjusting a position of immobilization of the nanomaterial on the observation substrate, between the grid portion of the observation substrate and the reference electrode; and a bias electrode, spaced apart from the reference electrode, electrically connected to the grid portion of the observation substrate, and applying the bias voltage from the adjustment voltage applying unit to the grid portion.