Tag Archives: electron microscopy

What is Time-Resolved Electron Microscopy?

Electron microscopy (EM) is a powerful imaging technique renowned for its outstanding spatial resolution. It surpasses the theoretical maximum resolving power of conventional microscopy by several orders of magnitude. This enables researchers to probe nanoscale structures and to resolve the chemical composition of samples with unprecedented precision. However, standard EM systems are typically unsuited to … Continue reading

July 11, 2022 Blog, Laser Quantum, Lasers

Stabilizing Ultrafast Electron Microscopy Imaging for Custom Optics

Problem The Zewail Group operating a Quanta FEG 650 interfaced with a custom optical set-up to enable ultrafast electron microscopy imaging. Feeding a laser into a SEM chamber requires positional stability within a few micrometers, so SEM internal air isolation was not in use. Vibration levels present in the environment were significant enough to degrade imaging … Continue reading

February 24, 2021 Blog, Herzan, Optomechanics

Unraveling Ultrafast Hot Electron Dynamics

Hot electron relaxation and transport in nanostructures involves a multitude of ultrafast processes relevant for applications in photocatalysis and optoelectronics. Researchers from Lund University employ time-resolved photoemission electron microscopy (Tr-PEEM) to image the relaxation of photogenerated hot electrons within InAs nanowires on a femtosecond time scale. According to Prof. Donatas Zigmantas, “High repetition rate of PHAROS is … Continue reading

February 9, 2021 Blog, Lasers, Light Conversion

A Quantum Microscope That Records the Flow of Light

Prof. Ido Kaminer and team have made a dramatic breakthrough in the field of quantum science: a quantum microscope that records the flow of light, enabling the direct observation of light trapped inside a photonic crystal. Their research, “Coherent Interaction between Free Electrons and a Photonic Cavity,” was published in Nature. All the experiments were performed … Continue reading

June 7, 2020 Blog, Lasers

Reduced Vibration Noise for Ultra-High Vacuum STM

Case Study Application: Surface Analysis Instrument: Omicron Variable Temperature Ultra-High Vacuum Scanning Tunneling Microscope (VT UHV-STM) Isolation System : Six-module AVI-200S Active Vibration Control System Problem Researchers at the School of Mathematical and Physical Sciences at the University of Newcastle in Australia were facing limitations in the performance of their Omicron Variable Temperature Ultra-High Vacuum Scanning Tunneling Microscope (VT … Continue reading

March 16, 2020 Blog, Herzan, Optomechanics

Interview with Herzan: How Noise Affects Electron Microscopy

AZoMaterials spoke to Reid Whitney, Vice President of Herzan, about the challenges of electron microscopy, with respect to understanding how environmental noise affects electron microscopy and Herzan’s solutions overcome these problems. For over 27 years, Herzan has worked with instrument manufacturers and end users to remove difficult environmental noise from their research. Topics covered in … Continue reading

February 6, 2020 Blog, Herzan, Optomechanics