Related Experiment Video
Updated: Mar 24, 2026
11:33
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
10.4K
Real-Time Probing of Electron Dynamics Using Attosecond Time-Resolved Spectroscopy
Krupa Ramasesha1,2, Stephen R Leone1,3,4, Daniel M Neumark1,4
1Department of Chemistry, University of California, Berkeley, California 94720;
Annual Review of Physical Chemistry
|March 17, 2016
Summary
Attosecond science uses ultrashort pulses to observe electron motion in atoms, molecules, and solids. This enables real-time studies of ionization, charge migration, and electron dynamics in materials.
Area of Science:
- Attosecond science
- Quantum dynamics
- Ultrafast spectroscopy
Background:
- Attosecond science enables direct observation of electron dynamics.
- Isolated attosecond pulses are key tools for studying ultrafast phenomena.
Purpose of the Study:
- To review recent attosecond measurements and their insights into electron dynamics.
- To highlight applications in gases and solid-state systems.
Main Methods:
- Attosecond photoelectron and photoion spectroscopy in atoms and molecules.
- Attosecond transient absorption spectroscopy (ATAS) in atoms and solids.
Main Results:
- Observed strong-field tunneling ionization and photoemission delays in atoms.
- Revealed ultrafast intramolecular charge migration in molecules.
- Measured bulk electron dynamics in solids, including insulator-to-metal transitions and carrier interactions.
Conclusions:
- Attosecond science provides unprecedented real-time insights into electron dynamics.
- Applications span from atomic and molecular physics to condensed matter physics.
Keywords:
electron dynamicshigh harmonic generationphotoelectron spectroscopytransient absorptionultrafast spectroscopyMore Related Videos
Related Concept Videos
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
944
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
944
01:22Overview of Microscopy Techniques
17.7K
The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
17.7K
01:07Electron Microscope Tomography and Single-particle Reconstruction
3.0K
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...
3.0K
01:19Protein Dynamics in Living Cells
2.8K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.8K
01:20Atomic Emission Spectroscopy: Overview
4.2K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
4.2K
01:29Atomic Fluorescence Spectroscopy
1.1K
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
1.1K