ALMAE TECHNOLOGIES’ Post

This article on the VO2 system reflects a combined work explaining the implications of the strain and the Cr doping on the insulator-to-metal transition (IMT) characteristics regarding its understanding and technological applications. Both the Cr doping and substrate-induced strain have been found to be key to understanding the IMT. We have devised a study to disentangle the relative role of Cr doping and strain in the IMT of the VO2 thin film, which was made possible by working on the purely strained and the Cr-doped strained VO2 thin films.

Injectable and retrievable soft electronicsLiquid bioelectronics based on a permanent fluidic magnet made from three-dimensional assembled magnetic colloidal particles can be injected into the surface of the heart for cardiovascular monitoring and subsequently retrieved after use.Ferrofluids are colloids made of nanoscale ferromagnetic particles dispersed within a carrier fluid that becomes strongly magnetized in the presence of a magnetic field. The properties of these systems are highly defined by Brownian motion, which plays a pivotal role. On the one hand, it prevents nanoparticles from aggregating due to gravity and magnetic forces by keeping them in constant motion, ensuring their suspension and even distribution within the carrier fluid1. On the other hand, Brownian motion also results in a random orientation of the nanoparticles’ magnetic moments, leading to a zero net magnetic moment in the absence of an external magnetic field.https://https://lnkd.in/grBSY-hk

Using multimodal electron microscopy, we investigate the competition between B-site cations in an oxygen-deficient perovskite oxide structure to understand how cationic interactions and oxidation states influence defect formation and local environmental stability. Our approach combines techniques like iDPC and EELS to analyze the extent of oxygen vacancy stabilization provided by different B-site cations, offering insights into how these atoms either compete or cooperate to occupy sites within the oxygen-deficient matrix. This behavior is crucial for tailoring material properties for energy applications, directly impacting ionic conductivity, electronic transport, and structural resilience.

new preprint alert: we used ultrafast coherent multidimensional spectroscopy to probe photoinduced dynamics in a covalent perylene diimide dimer exhibiting solvent-controlled on/off excitonic coupling. Excitonic coupling leads to ultrafast excimer formation. The coupling dependent population and vibrationally coherent dynamics in two solvents are measured and discussed in the context of tailoring the photophysics of supramolecular structures based on the perylene diimide moiety.

Join the webinar of “Optical Properties of Solid Samples” on 📅 Wednesday, May 22, 2024 at 9pm PDT | 1pm JST | 12pm CST (Session 3 for Asia Time zone). This webinar aims to comprehensively explore transmittance and reflectance measurements for both transparent and non-transparent crystal and thin film materials. Through detailed studies, it will be demonstrated how to accurately estimate the effects of various physical processes, including thermal treatments, ionizing radiation exposure, optical exposure, and mechanical treatments, on both crystals and thin films. Additionally, this webinar will provide in-depth guidance on estimating the optical band gap of thin films using the Tauc and Kubelka-Munk methods. Registration link - https://lnkd.in/dcUZKP22 #UVVis #MaterialsScience #OpticalProperties #Spectroscopy #ThinFilms

A recent publication in Plasma Science and Technology discusses the use of Impedans Semion RFEA and Octiv Suite VI probes in very high frequency magnetron sputtering tools. Semion measurements were crucial in determining the optimal power range for depositing Silicon films with improved crystal structure and higher growth rates. Additionally, Octiv measurements provided valuable electrical discharge characteristics, enhancing the understanding of electron and ion behavior within the plasma. To read a summary of the paper click here - https://lnkd.in/dxvqjHaN #rfea #vipobes #plasmadiagnostics #plasmameausrement #sputtering #plasmascienceandtechnology

UV/VIS spectroscopy does not necessarily mean that you need to squeeze you sample into a cuvette. If you are interested in finding out how you can bring the light to your samples instead of the opposite, you can register for our upcoming webinar highlighting the use of fiber optics in combination with the Agilent CARY spectrophotometers hosted by Spectroscopy on September 12th. #UV/VIS #Spectroscopy

FLS1000 Photoluminescence Spectrometer from Edinburgh Instruments The FLS1000 Spectrometer sets the standard in both steady state and time-resolved photoluminescence spectroscopy for research and routine laboratory applications. The system is a modular fluorescence and phosphorescence spectrometer for measuring spectra from the ultraviolet to the mid-infrared spectral range, and lifetimes spanning from picoseconds to seconds.

Micro-XRF is a particularly promising choice for characterizing the composition changes, layer thicknesses

“It is commonly accepted that during conductive atomic force microscopy (CAFM) measurement in ambient, a liquid meniscus can form between the tip and the sample. Such a liquid bridge, normally assumed to be composed of water, is a major factor in analyzing and understanding CAFM results. Here, we show that the adsorption of adventitious hydrocarbons from the air to a surface can greatly affect CAFM data both in imaging mode and in local spectroscopy (current–voltage or I–V curves). We propose a model to explain the phenomena whereby hydrocarbon contaminates contribute to the composition of the liquid bridge between the tip and the sample.”