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31 December 2022 Tip-enhanced Raman spectroscopy: Probing physicochemical properties at the nanoscale in ambient
Maria Vanessa B Oguchi, Norihiko Hayazawa, Takuo Tanaka
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Proceedings Volume PC12322, Nanophotonics, Micro/Nano Optics, and Plasmonics VIII; PC123220N (2022) https://doi.org/10.1117/12.2649836
Event: SPIE/COS Photonics Asia, 2022, Online Only
Abstract
In order to characterize nanomaterial-based devices, such as transistors, in working conditions (e.g. in ambient), we are constantly developing and improving our tip-enhanced Raman spectroscopy (TERS) system to probe our samples with both high chemical sensitivity and high spatial resolution. We have achieved the detection of temperature at nanoscale volumes using our technique called tip-enhanced THz-Raman spectroscopy (TE-THzRS) and have achieved sub-nanometer spatial resolution through our environment stable TERS system. We have also probed nanometer scale strain variations in monolayer graphene membranes using TERS. Now, aside from studying the strain distribution in graphene wrinkles, we are also studying carrier doping, one aspect of graphene’s electronic properties, through TERS.
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Maria Vanessa B Oguchi, Norihiko Hayazawa, and Takuo Tanaka "Tip-enhanced Raman spectroscopy: Probing physicochemical properties at the nanoscale in ambient", Proc. SPIE PC12322, Nanophotonics, Micro/Nano Optics, and Plasmonics VIII, PC123220N (31 December 2022); https://doi.org/10.1117/12.2649836
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KEYWORDS
Raman spectroscopy
Graphene
Doping
Carbon nanotubes
Spatial resolution
Scanning probe microscopy
Scanning tunneling microscopy
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