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

Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

552
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
552
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

456
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
456
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

422
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
422
Propagation of Waves01:07

Propagation of Waves

3.0K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
3.0K
Propagation of Action Potentials01:23

Propagation of Action Potentials

9.5K
The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
9.5K
Phase Diagrams02:39

Phase Diagrams

50.3K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
50.3K

You might also read

Related Articles

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

Sort by
Same author

Molecular Wave Plate for the Control of Ultrashort Pulses Carrying Orbital Angular Momentum.

Physical review letters·2025
Same author

Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials.

Nano letters·2025
Same author

Deterministic positioning of few aqueous colloidal quantum dots.

Nanoscale·2024
Same author

Optimization of the double-laser-pulse scheme for enantioselective orientation of chiral molecules.

The Journal of chemical physics·2022
Same author

Femtosecond Rotational Dynamics of D_{2} Molecules in Superfluid Helium Nanodroplets.

Physical review letters·2022
Same author

Efficient Frequency Conversion with Geometric Phase Control in Optical Metasurfaces.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2022

Related Experiment Video

Updated: Feb 5, 2026

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
06:58

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation

Published on: August 15, 2019

7.9K

Phase-controlled propagation of surface plasmons.

Basudeb Sain1, Roy Kaner1, Yehiam Prior1

  • 1Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel.

Light, Science & Applications
|September 1, 2018
PubMed
Summary
This summary is machine-generated.

We demonstrate precise control over surface plasmon propagation using linear nanoantenna arrays. This method enables directional control of plasmonic wake fields by leveraging asymmetric propagation speeds across metal films.

Keywords:
FDTDNSOMphased arrayplasmonic wakessurface plasmons

More Related Videos

Engineering Antiviral Agents via Surface Plasmon Resonance
13:00

Engineering Antiviral Agents via Surface Plasmon Resonance

Published on: June 14, 2022

2.8K
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

7.3K

Related Experiment Videos

Last Updated: Feb 5, 2026

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
06:58

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation

Published on: August 15, 2019

7.9K
Engineering Antiviral Agents via Surface Plasmon Resonance
13:00

Engineering Antiviral Agents via Surface Plasmon Resonance

Published on: June 14, 2022

2.8K
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

7.3K

Area of Science:

  • Plasmonics and Nanophotonics
  • Electromagnetic Radiation Control
  • Metamaterials and Nanostructures

Background:

  • Directional emission of electromagnetic radiation is typically achieved using shaped antennas or phased arrays.
  • Surface plasmon propagation at metal-dielectric interfaces can be controlled by nanostructure design or array phase control.
  • Phased arrays offer advanced manipulation capabilities for modern electromagnetic systems.

Purpose of the Study:

  • To demonstrate control over surface plasmon propagation within a linear array of nanostructures.
  • To investigate the generation of asymmetric propagation geometries using shaped nanoantennas.
  • To explore the potential for directional control of plasmonic wake fields.

Main Methods:

  • Fabrication and characterization of a linear array of surface nanostructures on a metal film.
  • Utilizing the differential propagation speeds of surface plasmons on opposite sides of the metal film.
  • Shaping individual nanoantennas to influence plasmon propagation and interference patterns.

Main Results:

  • Achieved controlled propagation of surface plasmons within the linear nanoantenna array.
  • Demonstrated that asymmetric propagation speeds create a phased array effect, controlling wake field directionality.
  • Successfully generated asymmetric plasmon propagation geometries by tailoring nanoantenna shapes.

Conclusions:

  • Linear nanoantenna arrays offer a viable platform for controlling surface plasmon propagation directionality.
  • Exploiting differential plasmon speeds across metal films provides a novel mechanism for phased array behavior.
  • Nanoantenna engineering allows for precise manipulation of plasmonic wake fields and propagation geometries.