Fleischmann knows of Surfaced Enhanced Raman Scattering and LENR nano plasmonics in wet cell.
QUOTE
The discovery of SERS has a relatively short history. It was accidentally discovered by Fleischmann and co-workers in 1974 during measurements of the Raman scattering of pyridine on rough silver electrodes, (1) and they ascribed the enhancement to a surface-area effect. The phenomenon was identified independently by Jeanmaire and Van Duyne (2) and by Albrecht and Creighton (3) in 1977, both of whom suggested enhancement factors (EFs) of 105–106. The connection with plasmon excitation was suggested by Albrecht and Creighton as a resonant Raman effect involving plasmon excitation, as proposed earlier by Philpott. (4) Subsequently, the connection of SERS intensities to enhanced fields arising from localized surface plasmons in nanostructured metals was noted by Moskovits. (5) Forty-five years later, tens of thousands of research papers have been published on SERS, (6) which discuss in great detail elements of the theory behind it, the design of a wide variety of (mostly but not only metallic) enhancing substrates, and their implementation in a wide variety of applications. Indeed, SERS has become a research field in its own right, as a source of exciting scientific phenomena, as well as one of the most sensitive analytical techniques currently available.
Article
"Present and Future of Surface-Enhanced Raman Scattering"
Judith Langer, Dorleta Jimenez de Aberasturi, Javier Aizpurua, Ramon A. Alvarez-Puebla, Baptiste Auguié, Jeremy J. Baumberg, Guillermo C. Bazan, Steven E. J. Bell, Anja Boisen, Alexandre G. Brolo, Jaebum Choo, Dana Cialla-May, Volker Deckert, Laura Fabris, Karen Faulds, F. Javier García de Abajo, Royston Goodacre, Duncan Graham, Amanda J. Haes, Christy L. Haynes, Christian Huck, Tamitake Itoh, Mikael Käll, Janina Kneipp, Nicholas A. Kotov, Hua Kuang, Eric C. Le Ru, Hiang Kwee Lee, Jian-Feng Li, Xing Yi Ling, Stefan A. Maier, Thomas Mayerhöfer, Martin Moskovits, Kei Murakoshi, Jwa-Min Nam, Shuming Nie, Yukihiro Ozaki, Isabel Pastoriza-Santos, Jorge Perez-Juste, Juergen Popp, Annemarie Pucci, Stephanie Reich, Bin Ren, George C. Schatz, Timur Shegai, Sebastian Schlücker, Li-Lin Tay, K. George Thomas, Zhong-Qun Tian, Richard P. Van Duyne, Tuan Vo-Dinh, Yue Wang, Katherine A. Willets, Chuanlai Xu, Hongxing Xu, Yikai Xu, Yuko S. Yamamoto, Bing Zhao, and Luis M. Liz-Marzán*
Cite this: ACS Nano 2020, 14, 1, 28–117
Publication Date:September 3, 2019
https://doi.org/10.1021/acsnano.9b04224
Copyright © 2019 American Chemical Society
The discovery of the enhancement of Raman scattering by molecules adsorbed on nanostructured metal surfaces is a landmark in the history of spectroscopic and analytical techniques. Significant experimental and theoretical effort has been directed toward understanding the surface-enhanced Raman scattering (SERS) effect and demonstrating its potential in various types of ultrasensitive sensing applications in a wide variety of fields. In the 45 years since its discovery, SERS has blossomed into a rich area of research and technology, but additional efforts are still needed before it can be routinely used analytically and in commercial products. In this Review, prominent authors from around the world joined together to summarize the state of the art in understanding and using SERS and to predict what can be expected in the near future in terms of research, applications, and technological development. This Review is dedicated to SERS pioneer and our coauthor, the late Prof. Richard Van Duyne, whom we lost during the preparation of this article.
The technique in which inelastic light scattering (Figure 1) by molecules is greatly enhanced (by factors up to 108 or even larger, enabling single-molecule (SM) SERS in some cases) when the molecules are adsorbed onto corrugated metal surfaces such as silver or gold nanoparticles (NPs). Since its discovery over 40 years ago, it has enjoyed steady growth of interest in the research community, and it has spawned a variety of other spectroscopic techniques that take advantage of enhanced local fields that arise from plasmon excitation in the NPs, for optical phenomena such as fluorescence or nonlinear optics. In addition, the coupling of SERS with atomic force microscopy (AFM) or scanning tunneling microscopy (STM) tips has led to tip-enhanced Raman scattering (TERS), which is a powerful imaging tool. For analytical applications, SERS can be differentiated from many other techniques by the rich vibrational spectroscopic information that it provides, which has led to applications in several different directions, including electrochemistry, catalysis, biology, medicine, art conservation, materials science, and others.
