Related Experiment Video
Updated: Feb 2, 2026
11:33
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
10.2K
Single-shot real-time sub-nanosecond electron imaging aided by compressed sensing: Analytical modeling and simulation
Xianglei Liu1, Shian Zhang2, Aycan Yurtsever1
1Centre Énergie Matériaux Télécommunications, Institut National de la Recherche Scientifique, 1650 boulevard Lionel-Boulet, Varennes, Québec, J3X1S2, Canada.
Micron (Oxford, England : 1993)
|November 26, 2018
Summary
Researchers developed a new method combining laser-assisted transmission electron microscopy (TEM) with compressed sensing (CS) to achieve real-time, sub-nanosecond imaging of ultrafast events. This breakthrough enables single-shot, spatiotemporal observation of dynamic structural changes.
Area of Science:
- Materials Science
- Physics
- Computational Imaging
Background:
- Achieving ultrafast (nanosecond and below) temporal resolution in transmission electron microscopy (TEM) is a significant challenge.
- Current methods struggle with sub-nanosecond temporal resolution for single electron pulse, real-time imaging of transient events.
Purpose of the Study:
- To propose and validate a novel methodology for ultrafast imaging in TEM.
- To enable single-shot, real-time, spatiotemporal imaging with sub-nanosecond resolution.
Main Methods:
- Combines laser-assisted TEM with computational imaging based on compressed sensing (CS).
- Employs spatial encoding, temporal shearing via streaking, and spatiotemporal integration of electron pulses.
- Reconstructs a spatiotemporal data cube from a 2D image using CS-based algorithms.
Main Results:
- Numerical simulations demonstrate good agreement between reconstructed and ground truth data.
- Validates the applicability of CS-based computational imaging to laser-assisted TEM.
- Shows the potential for single-shot, real-time imaging of ultrafast structural phenomena.
Conclusions:
- The proposed method offers a viable approach to overcome limitations in current ultrafast TEM techniques.
- This technique complements existing stroboscopic and nanosecond single-shot methods.
- Opens new avenues for studying irreversible structural dynamics at unprecedented temporal resolution.
Related Concept Videos
01:18Electron Orbital Model
72.2K
Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
72.2K
02:57Real Time RT-PCR
65.1K
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
The real-time quantification of the number of amplified products is...
65.1K
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K
01:07Electron Microscope Tomography and Single-particle Reconstruction
2.9K
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.9K
01:21Development of Analytical Methods
2.3K
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
2.3K
01:26Introduction to Special Senses
7.5K
Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
7.5K