Title :
Infrared near-field spectroscopic microscopy of polymers and proteins
Author :
Brehm, M. ; Taubner, T. ; Keilmann, F.
Author_Institution :
Max-Planck-Inst. fur Biochemie, Munich, Germany
fDate :
27 Sept.-1 Oct. 2004
Abstract :
Near-field microscopy of scattering type - known to resolve <30 nm in the mid IR - is shown to map polymer blend films and biological objects by their specific vibration bands covered by step-tuning a CO laser from 5 to 7 μm. The observed infrared-spectroscopic contrast is surprisingly robust even for very thin <20 nm samples and allows material identification at the nanometer scale.
Keywords :
infrared spectra; microorganisms; nanostructured materials; near-field scanning optical microscopy; polymer blends; polymer films; proteins; vibrational modes; 5 to 7 micron; CO laser step-tuning; biological objects; infrared near-field spectroscopic microscopy; mid IR range resolution; nanometer scale material identification; near-field scattering microscopy; polymer blend films; proteins; vibration bands; Biological materials; Infrared spectra; Microscopy; Nanobioscience; Optical materials; Polymer films; Proteins; Robustness; Scattering; Spectroscopy;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422328
