翻訳と辞書 Words near each other ・ Photosynthetic picoplankton ・ Photosynthetic pigment ・ Photosynthetic reaction centre ・ Photosynthetic reaction centre protein family ・ Photosynthetic state transition ・ Photosynthetically active radiation ・ Photosystem ・ Photosystem I ・ Photosystem II ・ Photosystem II light-harvesting protein ・ Phototaxis ・ Phototendering ・ Phototheca ・ Phototherapeutic keratectomy ・ Photothermal effect ・ Photothermal microspectroscopy ・ Photothermal optical microscopy ・ Photothermal spectroscopy ・ Photothermal therapy ・ Photothèque (Luxembourg) ・ PhotoToMovie ・ Phototool ・ Phototoxic tar dermatitis ・ Phototoxicity ・ Phototoxin ・ Phototrope ・ Phototroph ・ Phototrophic ・ Phototrophic biofilms ・ Phototrophic prokaryotes Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Photothermal microspectroscopy ： ウィキペディア英語版 Photothermal microspectroscopy Photothermal microspectroscopy (PTMS), alternatively known as photothermal temperature fluctuation (PTTF), is derived from two parent instrumental techniques: infrared spectroscopy and atomic force microscopy (AFM). In one particular type of AFM, known as scanning thermal microscopy (SThM), the imaging probe is a sub-miniature temperature sensor, which may be a thermocouple or a resistance thermometer. This same type of detector is employed in a PTMS instrument, enabling it to provide AFM/SThM images: However, the chief additional use of PTMS is to yield infrared spectra from sample regions below a micrometer, as outlined below. ==Technique== The AFM is interfaced with an infrared spectrometer. For work using Fourier transform infrared spectroscopy (FTIR), the spectrometer is equipped with a conventional black body infrared source. A particular region of the sample may first be chosen on the basis of the image obtained using the AFM imaging mode of operation. Then, when material at this location absorbs the electromagnetic radiation, heat is generated, which diffuses, giving rise to a decaying temperature profile. The thermal probe then detects the photothermal response of this region of the sample. The resultant measured temperature fluctuations provide an interferogram that replaces the interferogram obtained by a conventional FTIR setup, e.g., by direct detection of the radiation transmitted by a sample. The temperature profile can be made sharp by modulating the excitation beam. This results in the generation of thermal waves whose diffusion length is inversely proportional to the root of the modulation frequency. An important advantage of the thermal approach is that it permits to obtain depth-sensitive subsurface information from surface measurement, thanks to the dependence of thermal diffusion length on modulation frequency. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Photothermal microspectroscopy」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.