High photothermal conversion efficiency of RF sputtered TiO Magneli phase thin films and its linear correlation with light absorption capacity.

RF-sputtering is used to deposit TiO-Magneli-phase films onto various substrates at deposition temperatures (T) ranging from 25 to 650 °C. Not only the structural, but also electrical conductivity, optical absorbance and photothermal properties of the TiO films are shown to change significantly with T. A T of 500 °C is pointed out as the optimal temperature that yields highly-crystalized pure-TiO-Magneli phase with a densely-packed morphology and a conductivity as high as 740 S/cm.

Development of a City-wide Rapid Antiretroviral Therapy Initiation Toolkit for People Newly Diagnosed With HIV in the Southern United States.

Background: Rapid antiretroviral therapy (ART) initiation, in which individuals with HIV start treatment within days of diagnosis, is a key component of the United States (US) Ending the HIV Epidemic initiative. The Memphis Metropolitan Statistical Area ranks second in the US for HIV incidence, yet only ∼60% of individuals link to treatment within 1 month of diagnosis. This study aimed to identify barriers and strategies for implementing rapid ART initiation in Memphis.

Colossal Dielectric Constant of Nanocrystalline/Amorphous Homo-Composite BaTiO Films Deposited via Pulsed Laser Deposition Technique.

We report the pulsed laser deposition (PLD) of nanocrystalline/amorphous homo-composite BaTiO (BTO) films exhibiting an unprecedented combination of a colossal dielectric constant () and extremely low dielectric loss (tan ). By varying the substrate deposition temperature () over a wide range (300-800 °C), we identified = 550 °C as the optimal temperature for growing BTO films with an as high as ~3060 and a tan as low as 0.04 (at 20 kHz).

Multi-spectroscopic characterization system for cultural heritage materials analysis (SYSPECTRAL): Conception and example.

A comprehensive understanding of chemical composition of cultural heritage materials usually requires several complementary analytical techniques. Given the fragility and value of artworks, minimizing or avoiding sampling and performing in situ analysis under ambient light is an important goal. This article outlines a novel prototype designed to merge LIBS, laser-induced fluorescence spectroscopy (LIF), Raman spectroscopy using a single pulsed laser, and reflectance spectroscopy in a multi-spectroscopic characterization system for cultural heritage analysis (SYSPECTRAL).