Imaging microscopic biological specimens demands greater resolution than can typically be attained via conventional microscopy. Consider a cell, which is predominantly composed of water and is subsequently transparent. Visible light-based microscopy will fail to provide much detail about cellular structures, as most light on the range of 400–700 nanometers (nm) will simply transmit through. This … Continue reading
Ternary nitride alloys, such as InGaN, are currently the materials of choice for light-emitting diodes (LEDs) operating in the visible and ultraviolet spectral range. Researchers from Vilniaus Universitetas / Vilnius University, UC Santa Barbara, and Centre National de la Recherche Scientifique applied the light-induced transient grating (LITG) technique to study the hole diffusion in InGaN quantum well (QW) structures, … Continue reading
Noble metal nanoparticles patterned in ordered arrays interact and generate plasmonic surface lattice resonances. Up to now, the assumption was that such nanoparticles are static. But researchers from the Kaunas University of Technology in Lithuania have demonstrated that this is not the case at ultrafast time scales. They used Transient Absorption Spectroscopy (TAS) to study … Continue reading
Raman spectroscopy is a non-destructive analytical technique that yields detailed information about the chemical structure, crystallinity, and phase of a sample of matter. It can also be used to investigate various molecular interactions based on the scattering of incident light. Lasers have proven incredibly valuable as light sources for Raman scattering due to their high … Continue reading
The gem 640 laser from Laser Quantum is an excellent choice for super-resolution microscopy. The benefits of gem 640 include: Superior SM fibre coupling: Tight focal point for higher intensity, leading to strong emission signal and improved spatial resolution Unified compact platform: Compact form factor combined with high power. Unified design with multiple wavelengths available. … Continue reading
Controlling the spatial distribution of functional groups on 2D materials represents a fascinating opportunity in optoelectronics. In this study, researchers from the Center for Physical Sciences and Technology (FTMC), together with colleagues from the Czech Republic, have demonstrated periodic modulation of graphene doping using laser-induced periodic surface structures (LIPSS). The experimental setup included the PHAROS laser … Continue reading
