Mapping Local Charge Recombination Heterogeneity by Multidimensional Nanospectroscopic Imaging-Reference-Cited by-同舟云学术

Mapping Local Charge Recombination Heterogeneity by Multidimensional Nanospectroscopic Imaging

Published:2012-12-07 Issue:6112 Volume:338 Page:1317-1321
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Bao Wei¹²,Melli M.¹,Caselli N.³⁴,Riboli F.³⁴,Wiersma D. S.³⁵,Staffaroni M.⁶,Choo H.⁷,Ogletree D. F.¹,Aloni S.¹,Bokor J.¹⁶,Cabrini S.¹,Intonti F.³⁴,Salmeron M. B.¹²,Yablonovitch E.⁶,Schuck P. J.¹,Weber-Bargioni A.¹

Affiliation:

1. Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

2. Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, USA.

3. European Laboratory for Non-Linear Spectroscopy, 50019 Sesto Fiorentino, Firenze, Italy.

4. Dipartimento di Fisica e Astronomia, Università di Firenze, 50019 Sesto Fiorentino, Firenze, Italy.

5. Istituto Nazionale di Ottica (CNR-INO), 50125 Firenze, Italy.

6. Department of Electrical Engineering and Computer Sciences, University of California Berkeley, Berkeley, CA 94720–1770, USA.

7. Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.

Abstract

Mind the Gap Near-field microscopy has benefited from subwavelength near-field plasmonic probes that make use of the field-concentrating properties of gaps. These probes achieve maximum enhancement only in the tip-substrate gap mode, which can yield large near-field signals, but only for a metallic substrate and for very small tip-substrate gap distances. Bao et al. (p. 1317 ) designed a probe that unites broadband field enhancement and confinement with bidirectional coupling between far-field and near-field electromagnetic energy. Their tips primarily rely on the internal gap modes of the tip itself, thereby enabling it to image nonmetallic samples.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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