Low temperature, pressureless sp² to sp³ transformation of ultrathin, crystalline carbon films

Fabrice Piazza1*, Kathleen Gough2, Marc Monthioux3, Pascal Puech3, Iann Gerber4, Richard Wiens2, Germercy Paredes1, Cristhofer Ozoria1 1 Nanoscience Research Laboratory, Pontificia Universidad Católica Madre y Maestra, Autopista Duarte km 1 1/2, Apartado Postal 822, Santiago, Dominican Republic 2 Department of Chemistry, Universidad de Manitoba, Winnipeg, Canada 3 Centre d’Elaboration des Matériaux et d’Etudes Structurales (CEMES), CNRS, Université de Toulouse, France … Read More

Aluminum Film-Over-Nanosphere Substrates for Deep-UV Surface- Enhanced Resonance Raman Spectroscopy

Bhavya Sharma,‡,† M. Fernanda Cardinal,† Michael B. Ross,† Alyssa B. Zrimsek,† Sergei V. Bykov,§ David Punihaole,§ Sanford A. Asher,§ George C. Schatz,† and Richard P. Van Duyne*,† †Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States ‡Department of Chemistry, University of Tennessee, 1420 Circle Drive, Knoxville, Tennessee 37996, United States §Department of Chemistry, University of Pittsburgh, … Read More

Ultraviolet Resonance Raman Microprobe Spectroscopy of Photosystem II

Jun Chen and Bridgette A. Barry* School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA Received 17 August 2007, accepted 17 December 2007, DOI: 10.1111 ⁄ j.1751-1097.2008.00298.x ABSTRACT Photosystem II (PSII) carries out photosynthetic oxygen production and is responsible for the maintenance of aerobic, heterotrophic life. In PSII, protein amino … Read More

On the nature of wettability of van der Waals heterostructures

Meenakshi Annamalaia, Kalon Gopinadhan*a,b, Sang A Hanf,g, Surajit Sahaa,e, Hye Jeong Parkf, Eun Bi Chof, Brijesh Kumar#a, Sang-Woo Kim*f,g, T Venkatesan*a,b,c,d,e Wetting behaviour of surfaces is believed to be affected by van der Waals (vdW) forces; however, there is no clear demonstration of this. With the isolation of two-dimensional vdW layered materials it is possible to test this hypothesis. In … Read More

UV Raman Spectroscopy – Ultraviolet Raman spectrometry of oil mixtures, biological samples and catalysts; an optical method for characterization of fluorescing materials.

In Raman spectroscopy fluorescence (that is emission of unwanted light) is a persistent problem. Surprisingly, it has been discovered that a way to avoid this fluorescence is to excite the Raman spectra with deep ultraviolet (DUV) light. “Fluorescence does not exist if the exciting light has a wavelength shorter than 260 nm” [1]. The DTU project has accordingly been started … Read More