Tip-enhanced near-field Raman spectroscopy applied to nano-composite materials

Yuika Saito; Kazuhiro Yanagi; Norihiko Hayazawa; Hiromichi Kataura; Satoshi Kawata

doi:10.1117/12.733706

28 September 2007 Tip-enhanced near-field Raman spectroscopy applied to nano-composite materials

Yuika Saito, Kazuhiro Yanagi, Norihiko Hayazawa, Hiromichi Kataura, Satoshi Kawata

Proceedings Volume 6642, Plasmonics: Nanoimaging, Nanofabrication, and Their Applications III; 66420E (2007) https://doi.org/10.1117/12.733706
Event: NanoScience + Engineering, 2007, San Diego, California, United States

Abstract

Vibrational spectroscopy, including Raman spectroscopy can be used for identifying molecular species, which is not possible by a scanning probe microscopy or an electron microscopy. Moreover, vibrational spectra contain structural information, such as intermolecular interactions, molecular orientations, and symmetry distortions of each species. Therefore, Raman spectroscopy is a powerful tool for studying the chemical composition of matter. By employing Tip-enhanced Raman spectroscopy (TERS), we can perform Raman spectroscopy with nano-scale spatial resolution. Our approach relies on the enhanced filed near a laser irradiated metal tip which works as the Raman excitation source. We have investigated nano-composite materials by TERS. Near-field Raman spectra revealed the nano-scale properties of molecules encapsulated in single-wall carbon nanotubes (SWNT). The enhanced field act on encapsulated molecules through the wall of SWNT to extract chemical information inside. &bgr;-carotene which has strong Raman intensities under visible light illuminations is used as an encapsulated molecule. The advantage of Raman spectroscopy is that the information of both SWNT and &bgr;-carotene can be obtained at the same time. So, it is possible to discuss the interaction between SWNT and the encapsulated molecules. Near-field Raman spectra measured at several different positions on SWNT bundle show that &bgr;-carotenes inside the tube are not uniformly distributed. We also find that the filling rates and the peak positions of the radial breathing mode of SWNT are linearly correlated.

Citation Download Citation

Yuika Saito, Kazuhiro Yanagi, Norihiko Hayazawa, Hiromichi Kataura, and Satoshi Kawata "Tip-enhanced near-field Raman spectroscopy applied to nano-composite materials", Proc. SPIE 6642, Plasmonics: Nanoimaging, Nanofabrication, and Their Applications III, 66420E (28 September 2007); https://doi.org/10.1117/12.733706

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Raman spectroscopy

Single walled carbon nanotubes

Molecules

Near field

Nanocomposites

Spectroscopy

Atomic force microscopy

Show All Keywords

Keywords/Phrases

Search In:

Publication Years