dc.contributor.author
Ulrich, Georg
dc.contributor.author
Pfitzner, Emanuel
dc.contributor.author
Hoehl, Arne
dc.contributor.author
Liao, Jung-Wei
dc.contributor.author
Zadvorna, Olga
dc.contributor.author
Schweicher, Guillaume
dc.contributor.author
Sirringhaus, Henning
dc.contributor.author
Heberle, Joachim
dc.contributor.author
Kästner, Bernd
dc.contributor.author
Wunderlich, Jörg
dc.date.accessioned
2020-10-21T07:06:52Z
dc.date.available
2020-10-21T07:06:52Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/28584
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-28333
dc.description.abstract
We present a nanospectroscopic device platform allowing simple and spatially resolved thermoelectric detection of molecular fingerprints of soft materials. Our technique makes use of a locally generated thermal gradient converted into a thermoelectric photocurrent that is read out in the underlying device. The thermal gradient is generated by an illuminated atomic force microscope tip that localizes power absorption onto the sample surface. The detection principle is illustrated using a concept device that contains a nanostructured strip of polymethyl methacrylate (PMMA) defined by electron beam lithography. The platform's capabilities are demonstrated through a comparison between the spectrum obtained by on-chip thermoelectric nanospectroscopy with a nano-FTIR spectrum recorded by scattering-type scanning near-field optical microscopy at the same position. The subwavelength spatial resolution is demonstrated by a spectral line scan across the edge of the PMMA layer.
en
dc.format.extent
8 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
nanospectroscopy
en
dc.subject
photothermoelectric effect
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Thermoelectric nanospectroscopy for the imaging of molecular fingerprints
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1515/nanoph-2020-0316
dcterms.bibliographicCitation.journaltitle
Nanophotonics
dcterms.bibliographicCitation.number
14
dcterms.bibliographicCitation.pagestart
4347
dcterms.bibliographicCitation.pageend
4354
dcterms.bibliographicCitation.volume
9
dcterms.bibliographicCitation.url
https://doi.org/10.1515/nanoph-2020-0316
refubium.affiliation
Physik
refubium.affiliation.other
Institut für Experimentalphysik
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refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2192-8614
refubium.resourceType.provider
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