Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Unrealistic Optimism Bias01:30

Unrealistic Optimism Bias

Unrealistic optimism bias is the tendency to overestimate the likelihood of positive outcomes. This cognitive bias makes individuals believe they are less likely to experience failures, setbacks, or risks and more likely to succeed than others. For example, people may assume they are less prone to health issues, accidents, or financial struggles than their peers, even when they share similar risk factors.One key component of this bias is the above-average effect, where individuals perceive...
Internal and External Forces01:12

Internal and External Forces

Newton's first law states that a net external force causes a change in motion. External forces act on an object or system, originating outside of the object or system. In contrast, internal forces originate inside the system of interest and do not lead to any acceleration. In simpler words, internal forces are forces that act on one part of an object and are exerted by another part of the same object. External forces are forces that act on an object due to some other object. Therefore, when...
Stokes' Law01:20

Stokes' Law

Viscous forces, like friction, are intermolecular forces that resist the relative motion of molecules over each other. When a solid body moves through a liquid, viscous forces drag it in the opposite direction. The force's magnitude depends on the solid's shape and size, as well as its speed and the liquid's coefficient of viscosity, density and temperature.
The expression for the force on a solid spherical object in a fluid is called Stokes' law. Stokes' law is valid only for low Reynolds...
Static Equilibrium - II01:07

Static Equilibrium - II

Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
Non-conservative Forces01:17

Non-conservative Forces

Non-conservative forces are dissipative forces such as friction or air resistance. These forces take energy away from a system as it progresses. Unlike conservative forces, non-conservative forces do not have potential energy associated with them. This is because the energy is lost to the system and cannot be turned into useful work later.
Also unlike their conservative counterparts, they are path-dependent; where the object starts and stops does matter. For example, a grinding wheel applies a...
Dynamic Equilibrium02:20

Dynamic Equilibrium

A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A comprehensive test of the AMOEBA force field using spectroscopy, structures, and simulations of nitrile protein environments.

The Journal of chemical physics·2026
Same author

Magnetic resonance control of spin-correlated radical pair dynamics in vivo.

Nature·2026
Same author

Covalent Drug Binding in Live Cells Monitored by Mid-Infrared Quantum Cascade Laser Spectroscopy: Photoactive Yellow Protein as a Model System.

Journal of the American Chemical Society·2025
Same author

Covalent Drug Binding in Live Cells Monitored by Mid-IR Quantum Cascade Laser Spectroscopy: Photoactive Yellow Protein as a Model System.

bioRxiv : the preprint server for biology·2025
Same author

Electrostatic atlas of non-covalent interactions built into metal-organic frameworks.

Nature chemistry·2025
Same author

Introduction: Electric Fields in Chemistry and Biology.

Chemical reviews·2025
Same journal

Predicting Nirmatrelvir Resistance in SARS-CoV-2 M<sup>pro</sup> Mutants with an Integrated Computational Framework.

The journal of physical chemistry. B·2026
Same journal

From Cation Solvation to Anion Coordination: Lewis-Acidic Boranes Enable Halide Salt Electrolytes.

The journal of physical chemistry. B·2026
Same journal

In Vitro-Prepared A30P Alpha-Synuclein Fibrils Adopt the Conserved and Disease-Relevant Greek Key Fold.

The journal of physical chemistry. B·2026
Same journal

Metastructure Analysis of Self-Assembled Nanocubes with Different Equatorial Methyl Groups Based on Molecular Dynamics Simulations.

The journal of physical chemistry. B·2026
Same journal

A Cocoordinated <sup>1</sup>H Internal Reference Quantifies Proton-Exchange Bias in Coordinated-Water Diffusion.

The journal of physical chemistry. B·2026
Same journal

Unveiling Electrolyte-Dependent Coordination Site Dynamics for Redox Mediator Design in Lithium-O<sub>2</sub> Batteries: Exchange vs Rearrangement.

The journal of physical chemistry. B·2026
See all related articles

Related Experiment Video

Updated: Jun 20, 2026

Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

Stark realities.

Steven G Boxer1

  • 1Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA. sboxer@stanford.edu

The Journal of Physical Chemistry. B
|August 27, 2009
PubMed
Summary
This summary is machine-generated.

Stark spectroscopy reveals electric field effects on charge movement in molecules. This technique measures electric fields within biological systems and probes charge separation mechanisms in diverse chemical and material applications.

More Related Videos

Perspectives on Neuroscience
26:41

Perspectives on Neuroscience

Published on: July 31, 2007

Related Experiment Videos

Last Updated: Jun 20, 2026

Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

Perspectives on Neuroscience
26:41

Perspectives on Neuroscience

Published on: July 31, 2007

Area of Science:

  • Physical Chemistry
  • Biophysics
  • Spectroscopy

Background:

  • Electric fields influence processes involving charge movement.
  • Stark spectroscopy studies spectral changes under electric fields, characterizing dipole moment and polarizability changes.
  • Applications span biological and nonbiological systems, focusing on symmetry breaking and charge separation.

Purpose of the Study:

  • To review the evolution and applications of Stark spectroscopy.
  • To explore its use in understanding charge separation in photosynthetic centers and other chromophores.
  • To highlight its role in measuring electric fields within biological macromolecules and materials.

Main Methods:

  • Applying electric fields to perturb molecular transitions.
  • Analyzing spectral shifts (Stark shifts) to infer molecular properties and electric field strengths.
  • Investigating nonclassical Stark effects in charge transfer and electron transfer reactions.

Main Results:

  • Stark spectroscopy quantifies changes in dipole moment and polarizability for electronic and vibrational transitions.
  • It calibrates probe sensitivity, enabling measurement of electric fields in proteins, nucleic acids, and membranes.
  • Nonclassical Stark effects provide insights into charge transfer and electron transfer dynamics.

Conclusions:

  • Stark spectroscopy is a versatile tool for characterizing molecular properties and electric fields.
  • It offers a powerful method for studying charge separation mechanisms and dynamics.
  • The principles of the Stark effect are broadly applicable across chemistry, biology, and materials science.