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

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

4.9K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.9K
Gauss's Law in Dielectrics01:17

Gauss's Law in Dielectrics

5.1K
Consider a polar dielectric placed in an external field. In such a dielectric, opposite charges on adjacent dipoles neutralize each other, such that the net charge within the dielectric is zero. When a polar dielectric is inserted in between the capacitor plates, an electric field is generated due to the presence of net charges near the edge of the dielectric and the metal plates interface. Since the external electrical field merely aligns the dipoles, the dielectric as a whole is neutral. An...
5.1K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

5.9K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.9K
Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

2.8K
When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.
2.8K
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

1.9K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
1.9K
RACE - Rapid Amplification of cDNA Ends02:35

RACE - Rapid Amplification of cDNA Ends

7.2K
Rapid Amplification of cDNA Ends, or RACE, is one of the most effective methods to obtain a full-length cDNA from an mRNA sequence between a known internal region to the unknown sequence at the 5’ or 3’ end. The unknown region is cloned in the cDNA by a gene-specific primer that binds the known end, and a hybrid primer that attaches a predefined anchor sequence to the unknown end of the cDNA. The sequence in between is amplified by PCR with an anchor primer and a gene-specific...
7.2K

You might also read

Related Articles

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

Sort by
Same author

Reward prediction is encoded by orexin neuron activity during motivated behavior.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Quantum well-inspired energy level design in multicomponent organic solar cells for improved energy loss management.

Materials horizons·2026
Same author

Green synthesized Cu<sub>2</sub>O/TiO<sub>2</sub> nanotube heterojunction for pharmaceutical mineralization and simultaneous hydrogen evolution: mechanistic insight and toxicity assessment.

Journal of environmental management·2026
Same author

Advancements in fire-related toxic gas detection and prophylactic strategies: A focus on cyanide concentration analysis and antidote efficacy in controlled smoke inhalation models.

PloS one·2026
Same author

Impact of home healthcare reform on place of death for people with dementia: A nationwide cohort study accounting for cultural factors of impending death discharge - CORRIGENDUM.

Palliative & supportive care·2026
Same author

PRMT5-mediated methylation of LKB1 controls PD-L1 expression in NSCLC.

Biomedical journal·2026
Same journal

Demonstration of a quantum C-NOT gate in a time-multiplexed fully reconfigurable photonic processor.

Nature communications·2026
Same journal

Nonlinear quantum light source with van der Waals ferroelectric NbOX<sub>2</sub> (X = Br, I).

Nature communications·2026
Same journal

Antagonistic histone H2A variants and autonomous heterochromatin formation shape epigenomic patterns in Arabidopsis.

Nature communications·2026
Same journal

The long tail of nitrate pollution in groundwater challenges governance of global water quality.

Nature communications·2026
Same journal

Select microbial metabolites promote tau aggregation in a murine tauopathy model.

Nature communications·2026
Same journal

Warming climate has lengthened global intense tropical cyclone seasons.

Nature communications·2026
See all related articles

Related Experiment Video

Updated: Jan 27, 2026

Triplet Fusion Upconversion Nanocapsule Synthesis
08:36

Triplet Fusion Upconversion Nanocapsule Synthesis

Published on: September 7, 2022

2.9K

Upconversion amplification through dielectric superlensing modulation.

Liangliang Liang1, Daniel B L Teh2,3, Ngoc-Duy Dinh4

  • 1Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore.

Nature Communications
|March 29, 2019
PubMed
Summary
This summary is machine-generated.

Dielectric microbeads enhance photon upconversion in lanthanide-doped nanocrystals by creating photonic hotspots. This breakthrough amplifies luminescence up to 5 orders of magnitude, enabling new applications in energy and biophotonics.

More Related Videos

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

6.6K
Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
13:51

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

Published on: November 10, 2017

15.8K

Related Experiment Videos

Last Updated: Jan 27, 2026

Triplet Fusion Upconversion Nanocapsule Synthesis
08:36

Triplet Fusion Upconversion Nanocapsule Synthesis

Published on: September 7, 2022

2.9K
Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

6.6K
Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
13:51

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

Published on: November 10, 2017

15.8K

Area of Science:

  • Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Efficient photon upconversion is crucial for applications like photovoltaics and biophotonics.
  • Current methods for intensifying upconversion luminescence require precise control over nanophosphor properties.

Purpose of the Study:

  • To develop a novel strategy for significantly enhancing photon upconversion efficiency.
  • To explore the use of dielectric microbeads for luminescence intensification.

Main Methods:

  • Utilized dielectric microbeads to modulate excitation and emission fields via superlensing effects.
  • Engineered photonic hotspots to concentrate light energy.
  • Demonstrated amplification of luminescence in lanthanide-doped nanocrystals.

Main Results:

  • Achieved luminescence amplification up to 5 orders of magnitude.
  • Demonstrated a general strategy for converging low-power light into high-intensity photonic hotspots.
  • Enabled collimation of divergent emission for efficient far-field detection.

Conclusions:

  • Dielectric superlensing offers a powerful approach to enhance photon upconversion processes.
  • This strategy facilitates practical applications in photobiology, energy conversion, and optogenetics.
  • Overcomes limitations of previous methods requiring stringent nanophosphor control.