Far Infrared Synchrotron Near-Field Nanoimaging and Nanospectroscopy
Abstract
Scattering scanning near-field optical microscopy ($$s$$-SNOM) has emerged as a powerful imaging and spectroscopic tool for investigating nanoscale heterogeneities in biology, quantum matter, and electronic and photonic devices. However, many materials are defined by a wide range of fundamental molecular and quantum states at far-infrared (FIR) resonant frequencies currently not accessible by $$s$$-SNOM. Here we show ultrabroadband FIR $$s$$-SNOM nanoimaging and spectroscopy by combining synchrotron infrared radiation with a novel fast and low-noise copper-doped germanium (Ge:Cu) photoconductive detector. This approach of FIR synchrotron infrared nanospectroscopy (SINS) extends the wavelength range of $$s$$-SNOM to 31 μm (320 cm-1, 9.7 THz), exceeding conventional limits by an octave to lower energies. We demonstrate this new nanospectroscopic window by measuring elementary excitations of exemplary functional materials, including surface phonon polariton waves and optical phonons in oxides and layered ultrathin van der Waals materials, skeletal and conformational vibrations in molecular systems, and the highly tunable plasmonic response of graphene.
- Authors:
-
- Univ. of Colorado, Boulder, CO (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. of Colorado, Boulder, CO (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1439299
- Alternate Identifier(s):
- OSTI ID: 1526534
- Report Number(s):
- BNL-205714-2018-JAAM
Journal ID: ISSN 2330-4022
- Grant/Contract Number:
- SC0012704; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Photonics
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 7; Journal ID: ISSN 2330-4022
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; far-infrared; graphene plasmonics; near-field microscopy; s-SNOM; spatiospectral nanoimaging; synchrotron infrared nanospectroscopy; 47 OTHER INSTRUMENTATION
Citation Formats
Khatib, Omar, Bechtel, Hans A., Martin, Michael C., Raschke, Markus B., and Carr, G. Lawrence. Far Infrared Synchrotron Near-Field Nanoimaging and Nanospectroscopy. United States: N. p., 2018.
Web. doi:10.1021/acsphotonics.8b00565.
Khatib, Omar, Bechtel, Hans A., Martin, Michael C., Raschke, Markus B., & Carr, G. Lawrence. Far Infrared Synchrotron Near-Field Nanoimaging and Nanospectroscopy. United States. https://doi.org/10.1021/acsphotonics.8b00565
Khatib, Omar, Bechtel, Hans A., Martin, Michael C., Raschke, Markus B., and Carr, G. Lawrence. Fri .
"Far Infrared Synchrotron Near-Field Nanoimaging and Nanospectroscopy". United States. https://doi.org/10.1021/acsphotonics.8b00565. https://www.osti.gov/servlets/purl/1439299.
@article{osti_1439299,
title = {Far Infrared Synchrotron Near-Field Nanoimaging and Nanospectroscopy},
author = {Khatib, Omar and Bechtel, Hans A. and Martin, Michael C. and Raschke, Markus B. and Carr, G. Lawrence},
abstractNote = {Scattering scanning near-field optical microscopy ($s$-SNOM) has emerged as a powerful imaging and spectroscopic tool for investigating nanoscale heterogeneities in biology, quantum matter, and electronic and photonic devices. However, many materials are defined by a wide range of fundamental molecular and quantum states at far-infrared (FIR) resonant frequencies currently not accessible by $s$-SNOM. Here we show ultrabroadband FIR $s$-SNOM nanoimaging and spectroscopy by combining synchrotron infrared radiation with a novel fast and low-noise copper-doped germanium (Ge:Cu) photoconductive detector. This approach of FIR synchrotron infrared nanospectroscopy (SINS) extends the wavelength range of $s$-SNOM to 31 μm (320 cm-1, 9.7 THz), exceeding conventional limits by an octave to lower energies. We demonstrate this new nanospectroscopic window by measuring elementary excitations of exemplary functional materials, including surface phonon polariton waves and optical phonons in oxides and layered ultrathin van der Waals materials, skeletal and conformational vibrations in molecular systems, and the highly tunable plasmonic response of graphene.},
doi = {10.1021/acsphotonics.8b00565},
journal = {ACS Photonics},
number = 7,
volume = 5,
place = {United States},
year = {2018},
month = {5}
}
Web of Science
Figures / Tables:

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Figures / Tables found in this record: