Laser-driven growth of silver nanoplates on p-type GaAs substrates and their surface-enhanced Raman scattering activity
| dc.contributor.author | Sun, Yugang | |
| dc.contributor.author | Pelton, Matthew | |
| dc.date.accessioned | 2023-08-14T19:11:34Z | |
| dc.date.available | 2023-08-14T19:11:34Z | |
| dc.date.issued | 2009-03-20 | |
| dc.description.abstract | Contact between aqueous solutions of silver nitrate (AgNO₃) and pristine surfaces of p-type gallium arsenide (GaAs) wafers results in essentially no reaction at room temperature and in the dark. The galvanic reactions between the GaAs wafers and AgNO₃ can be triggered under illumination of laser beams with power densities higher than a critical value (∼15 mW/cm² for a 630 nm laser), resulting in the growth of silver (Ag) nanoplates on the GaAs surface. The density and dimensions (including both thickness and edge length) of the resulting nanoplates can be readily tuned by controlling the growth time and laser power density. The as-grown Ag nanoplates on the substrates significantly enhance Raman signals of interesting molecules and serve as a new class of promising surface-enhanced Raman scattering substrates for sensitive chemical detection. | en_US |
| dc.description.sponsorship | The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. Use of the Center for Nanoscale Materials, the Electron Microscopy Center for Materials Research, and the Advanced Photon Source at Argonne was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. Characterizations were also carried out by partially using the Center for Microanalysis of Materials Facilities in Frederick Seitz Materials Research Laboratory, University of Illinois, which is partially supported by the U.S. Department of Energy under Grant No. DEFG02-91-ER45439. Y.S. thanks Drs. Changhui Lei and Hanfei Yan for the help with TEM and X-ray diffraction characterization. | en_US |
| dc.description.uri | https://pubs.acs.org/doi/10.1021/jp900638m | en_US |
| dc.format.extent | 7 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2selt-ztpv | |
| dc.identifier.citation | Sun, Yugang, and Matthew Pelton. “Laser-Driven Growth of Silver Nanoplates on p-Type GaAs Substrates and Their Surface-Enhanced Raman Scattering Activity.” The Journal of Physical Chemistry C 113, no. 15 (April 16, 2009): 6061–67. https://doi.org/10.1021/jp900638m. | en_US |
| dc.identifier.uri | https://doi.org/10.1021/jp900638m | |
| dc.identifier.uri | http://hdl.handle.net/11603/29203 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | ACS | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | * |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Laser-driven growth of silver nanoplates on p-type GaAs substrates and their surface-enhanced Raman scattering activity | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-6370-8765 | en_US |