Deep-UV Surface-Enhanced Resonance Raman Scattering of Adenine on Aluminum Nanoparticle Arrays.
We report the ultrasensitive detection of adenine using deep-UV surface-enhanced resonance Raman scattering on aluminum nanostructures. Well-defined Al nanoparticle arrays fabricated over large areas using extreme-UV interference lithography exhibited sharp and tunable plasmon resonances in the UV a...
| Publicado en: | Journal of the American Chemical Society Vol. 134; no. 4; pp. 1966 - 1970 |
|---|---|
| Autores principales: | , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
2/1/2012
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=71532130&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 71532130 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 2/1/2012 vid: 134 iid: 4 pid: 997 pub: American Chemical Society artinfo: ui: 71532130 10.1021/ja210446w ppf: 1966 ppct: 4 formats: tig: atl: Deep-UV Surface-Enhanced Resonance Raman Scattering of Adenine on Aluminum Nanoparticle Arrays. aug: au: Jha, Shankar K. Ahmed, Zeeshan Agio, Mario Ekinci, Yasin Löffler, Jörg F. affil: Laboratory of Metal Physics and Technology, Department of Materials, ETH Zürich, 8093 Zürich, Switzerland Biophysics Group, Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA Laboratory of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland Laboratory for Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland su: Surface enhanced Raman effect Adenine Nanoparticles Aluminum Nanostructures sug: subj: Surface enhanced Raman effect Adenine Nanoparticles Aluminum Nanostructures ab: We report the ultrasensitive detection of adenine using deep-UV surface-enhanced resonance Raman scattering on aluminum nanostructures. Well-defined Al nanoparticle arrays fabricated over large areas using extreme-UV interference lithography exhibited sharp and tunable plasmon resonances in the UV and deep-UV wavelength ranges. Theoretical modeling based on the finite-difference time-domain method was used to understand the near-field and far-field optical properties of the nanoparticle arrays. Raman measurements were performed on adenine molecules coated uniformly on the Al nanoparticle arrays at a laser excitation wavelength of 257.2 nm. With this technique, less than 10 amol of label-free adenine molecules could be detected reproducibly in real time. Zeptomole (∼30?000 molecules) detection sensitivity was readily achieved proving that deep-UV surface-enhanced resonance Raman scattering is an extremely sensitive tool for the detection of biomolecules. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2012 holdings: @attributes: islocal: N |
|---|