Dr. Marienette Morales-Vega: Gold Nanoparticles as Substrates for SurfaceEnhanced Raman Spectroscopy

Описание: Taken during the online 40th Anniversary and 2020 Annual PAASE Meeting and Symposium (APAMS) of the Philippine-American Academy of Science & Engineering (PAASE) from July 20 - August 14, 2020.

ABSTRACT: Surface – enhanced Raman scattering (SERS) effect is the giant increase in Raman scattering intensity of an analyte molecule due to its proximity to a metal nanostructure. Nanostructures, which play the key role in the SERS effect, can be in the form of single metals or coupled hybrid materials. Gold nanoparticle is one of the most effective nanoamplifiers for Raman scattering. However, its ability to enhance signals is affected by its geometric configuration and other substrates paired with it. In this talk, I
will present the series of experiments done by our group showing the effects of varying substrate configurations on the corresponding enhancement factors. While SERS has been extensively used especially for the detection of trace amounts and even single – molecule of chemical species in solution, SERS has not been widely applied to detection in solids. Very little work has been done to exhibit SERS in compact solid materials. I will also present in this talk that SERS enhancement on dense and polished solids may be achieved.

ABOUT PAASE: The Philippine-American Academy of Science & Engineering (PAASE) is a non-profit organization composed of scientists and engineers of Philippine descent who have distinguished themselves in scholarly and research related activities. PAASE was founded and incorporated in the US State of Indiana on April 23, 1980. PAASE aims to promote the advancement of science, engineering & technology; encourage collaborative work among scientists & engineers of Philippine descent in research and development through scholarly and scientific endeavors; support efforts that advance science & technology; and recognize and honor the achievements of scientists and engineers of Philippine descent. For more info, kindly visit our website: www.paase.org