发明名称 |
Method and apparatus for processing a minute portion of a specimen |
摘要 |
A method for detecting a photoacoustic signal includes the steps of modulating the intensity of light obtained from a light source at a predetermined modulation frequency, exciting a specimen by directing the intensity-modulated light onto the specimen, thereby generating a photoacoustic effect in the specimen, detecting the photoacoustic effect generated in the specimen and producing a detection signal indicative of the detected photoacoustic effect, and extracting information about the surface and interior of the specimen from the detection signal, wherein the intensity-modulated light is emitted from an aperture of a near-field optical scanning microscope used in directing the intensity-modulated light onto the specimen while a distance between the aperture of the near-field optical scanning microscope and the surface of the specimen is maintained constant irrespective of the photoacoustic effect generated in the specimen.
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申请公布号 |
US5333495(A) |
申请公布日期 |
1994.08.02 |
申请号 |
US19930012758 |
申请日期 |
1993.03.11 |
申请人 |
HITACHI, LTD. |
发明人 |
YAMAGUCHI, HIROSHI;NOGUCHI, MINORI;KOHNO, MAKIKO;NAKATA, TOSHIHIKO |
分类号 |
G01Q10/00;G01Q30/02;G01Q30/16;G01Q60/12;G01Q60/18;G01Q60/22;G01Q60/56;G01Q70/10;H01J37/28;(IPC1-7):G01B5/28;G01N23/00;G01N21/31;C21K1/00 |
主分类号 |
G01Q10/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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