Results 101 to 110 of about 1,629,426 (325)

Development and Optimization of Micro‐Nanotopographical Platforms for Surface Enhanced Raman Scattering Biomolecular Detection

Advanced Materials Interfaces, EarlyView.
Lithographically defined concentric micro‐ and nanostructures systematically designed and fabricated as reproducible arrays for Surface‐enhanced Raman spectroscopy applications. Abstract Topologically designed micro‐ and nanostructured surface‐enhanced Raman scattering (SERS) substrates propel the advancements of innovative applications, including ...
David Femi Odetade, Jonathan J. S. Rickard, Pola Goldberg Oppenheimer   +2 more
wiley   +1 more source

Overview of the Fiber System for the Dark Energy Spectroscopic Instrument

The Astronomical Journal
The Dark Energy Spectroscopic Instrument (DESI) is a revolutionary instrument designed for precise measurements of cosmic distances and the investigation of dark energy.
Claire Poppett, Luke Tyas, J. Aguilar, Christopher Bebek, D. Bramall, T. Claybaugh, J. Edelstein, P. Fagrelius, H. Heetderks, P. Jelinsky, S. Jelinsky, Robin Lafever, A. Lambert, M. Lampton, Michael E. Levi, P. Martini, C. Rockosi, J. Schmoll, Ray M. Sharples, Martin Sirk, Edward Wishnow, Jiaxi Yu, S. Ahlen, A. Bault, S. BenZvi, D. Brooks, S. Cole, A. de la Macorra, Arjun Dey, P. Doel, K. Fanning, A. Font-Ribera, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, A. X. Gonzalez-Morales, C. Hahn, K. Honscheid, J. Jimenez, S. Juneau, D. Kirkby, A. Kremin, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, J. Moustakas, E. Mueller, A. Muñoz-Gutiérrez, A. D. Myers, J. Nie, G. Niz, N. Palanque-Delabrouille, W. J. Percival, F. Prada, D. Rabinowitz, M. Rezaie, G. Rossi, E. Sanchez, Edward F. Schlafly, D. Schlegel, M. Schubnell, H. Seo, D. Sprayberry, G. Tarlé, M. Vargas-Magaña, B. A. Weaver, R. Zhou   +68 more
doaj   +1 more source

Evaluating the Local Bandgap Across inxGa1‐xas Multiple Quantum Wells in a Metamorphic Laser via Low‐Loss EELS

Advanced Materials Interfaces, EarlyView.
This research explores local bandgap, composition, and strain variations across InxGa₁−xAs quantum wells within a metamorphic laser structure using high‐resolution scanning transmission electron microscopy (STEM) and low‐loss electron energy loss spectroscopy (EELS). Results reveal significant inhomogeneities, particularly near interfaces, with bandgap
Nicholas Stephen, Ivan Pinto‐Huguet, Robert Lawrence, Demie Kepaptsoglou, Marc Botifoll, Agnieszka Gocalinska, Enrica Mura, Quentin Ramasse, Emanuele Pelucchi, Jordi Arbiol, Miryam Arredondo   +10 more
wiley   +1 more source

3D Spectroscopy and the Virtual Observatory [PDF]

arXiv, 2007
Integral field, or 3D, spectroscopy is the technique of obtaining spectral information over a two-dimensional, hopefully contiguous, field of view. While there is some form of astronomical 3D spectroscopy at all wavelengths, there has been a rapid increase in interest in optical and near-infrared 3D spectroscopy.
arxiv  

Ultrathin Gold for Robust Multi‐Element Surface Plasmon Resonance Biosensing

Advanced Materials Interfaces, EarlyView.
This is a pioneering work where for the first time we applied recently synthesised ultrathin layer of gold for plasmonic biosensing that makes use of multi‐element architectures. This study solves the problem of stability of the multi‐element biosensors as well as demonstrates increased sensitivity achieved by utilising new additions to low‐dimension ...
Vasyl G. Kravets, Andrew Strudwick, Alexander N. Grigorenko   +2 more
wiley   +1 more source

Low‐boiling Point Perfluorocarbon Nanodroplets as Dual‐Phase Dual‐Modality MR/US Contrast Agent

ChemPhysChem, Volume 23, Issue 24, December 16, 2022., 2022
Low‐boiling point perfluorocarbon nanodroplets is vaporized into microbubbles using acoustic activation, establishing them as phase‐change contrast agents for ultrasound. The unique hyperCEST signatures of nanodroplets and microbubbles are demonstrated, enabling their use not only as a dual‐phase but also as a dual‐modality MR/US contrast agent ...
Christian T. McHugh, Phillip G. Durham, Sebastian Atalla, Michele Kelley, Nicholas J. Bryden, Paul A. Dayton, Rosa T. Branca   +6 more
wiley   +1 more source

The Top Ten Astronomical 'breakthroughs' of the 20th century

Communicating Astronomy with the Public Journal, 2007
Astronomy was revolutionized in the 20th century. The electron was discovered in 1897 and this transformed spectroscopy and introduced plasma and magnetohydrodynamic physics and astro-chemistry.
Hughes, D. W., de Grijs, Richard
doaj  

Common Methods of Stellar Spectra Analysis and their Support in Virtual Observatory [PDF]

Proceedings of EURO-VO Workshop Astronomical Spectroscopy and Virtual Observatory, ESAC, 21-23 March 2007, Villafranca del Castillo, 97-104, 2011
The proper scientific analysis of a large amount of stellar spectra requires certain capabilities of the analysing tool (e.g. precise semi-automatic fitting for normalisation of the continuum or line-list assisted measurement of spectral lines) as well as flexible list-driven datafile handling.
arxiv  

Contactless Tracking of Decomposition in Self‐Reporting Ceramic Cr‐Al‐B Coatings

Advanced Materials Interfaces, EarlyView.
Proof of concept for contactless tracking of decomposition in self‐reporting ceramic Cr‐Al‐B coatings in extreme environments by contactless resistivity measurements is demonstrated. To verify the results, high resolution in situ and ex situ methods are employed.
Peter J. Pöllmann, Sebastian Lellig, Dimitri Bogdanovski, Amir Hossein Navidi Kashani, Damian M. Holzapfel, Clio Azina, Peter Schweizer, Marcus Hans, Paula Zöll, Daniel Primetzhofer, Szilárd Kolozsvári, Peter Polcik, Johann Michler, Jochen M. Schneider   +13 more
wiley   +1 more source

High Sensitivity, High Spectral Resolution, Mid-infrared Spectroscopy [PDF]

arXiv, 2001
We broadly discuss mid-infrared spectroscopy and detail our new high spectral resolution instrument, the Texas Echelon-cross-Echelle Spectrograph (TEXES).
arxiv