Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Atomic Radii and Effective Nuclear Charge

Atomic Radii and Effective Nuclear Charge

The elements in groups of the periodic table exhibit similar chemical behavior. This similarity occurs because the members of a group have the same number and distribution of electrons in their valence shells.

Nuclear Stability

Nuclear Stability

Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively...

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...

Atomic Nuclei: Nuclear Spin State Population Distribution

Atomic Nuclei: Nuclear Spin State Population Distribution

Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.

Nuclear Overhauser Enhancement (NOE)

Nuclear Overhauser Enhancement (NOE)

Irradiation of a spin-active nucleus causes an increase or decrease in the signal intensity of neighboring nuclei that are not necessarily chemically bonded or involved in J-coupling. This phenomenon, called the nuclear Overhauser enhancement (NOE), results from through-space interactions between the nuclear spins. The NOE effect decreases with increasing internuclear distance and is generally not observed beyond 4 angstroms. In NOE, dipole-dipole interactions between neighboring spin-active...

You might also read

Related Articles

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

Sort by

Same author

Genetic regulation of stem elongation and thickening in ornamental plants: a review.

Horticulture research·2026

Same author

High temperature Nb-Si alloys using data science: optimization of fracture toughness and high-temperature strength.

Nature communications·2026

Same author

Analysis of Dust Dispersion Behavior and Influencing Factors for Powder Coatings in a 20 L Transparent Sphere.

ACS omega·2026

Same author

Effect of ablation-zone diameter on whole-corneal higher-order aberrations after LASEK: a retrospective study.

Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie·2026

Same author

Specific Multimodal Imaging of Deep-Seated Tumor with High Intratumoral Retention <i>via In Situ</i> Assembly of Probes.

ACS nano·2026

Same author

Malic Enzyme 1 Limits Acetaminophen-Induced Liver Injury by Sustaining Redox and Bioenergetic Homeostasis.

Metabolites·2026

Search research articles

Related Experiment Video

Updated: May 4, 2026

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Quantum Dots on Flexible Nanohole Arrays Support Stable Nanolasing.

Shaobin Zheng^1,2,3,4, Qinglin Ji^1,2,3, Yungao Chen^1,2,3

¹State Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.

|February 20, 2026

Summary

Researchers developed a flexible nanolaser using perovskite quantum dots and a PDMS nanohole array. This device maintains stable lasing performance under mechanical strain, enabling applications like facial recognition.

Keywords:

dielectric nanolasing guided-mode resonance multiangle lasing emission quantum dots stretchable photonic device

More Related Videos

Laser-induced Forward Transfer of Ag Nanopaste

Laser-induced Forward Transfer of Ag Nanopaste

Published on: March 31, 2016

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Related Experiment Videos

Last Updated: May 4, 2026

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Laser-induced Forward Transfer of Ag Nanopaste

Laser-induced Forward Transfer of Ag Nanopaste

Published on: March 31, 2016

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Nanostructure lattices are promising for compact light sources but lack emission stability under mechanical stress.
Existing nanolasers face challenges in maintaining performance when deformed.

Purpose of the Study:

To demonstrate a flexible nanolaser with robust lasing performance under mechanical deformation.
To engineer a nanolaser structure that ensures stable emission characteristics during bending and stretching.

Main Methods:

Fabrication using nanoimprint and quantum dot (QD) drop-casting processes.
Utilizing guided-mode resonance (GMR) in a perovskite QD film integrated with a polydimethylsiloxane (PDMS) nanohole array.
Engineering the PDMS nanohole array for stable effective period and resonance wavelength under strain.

Main Results:

Achieved a flexible nanolaser with stable lasing at 532 nm and a low threshold (∼15 μJ/cm²).
Demonstrated robust performance under up to 15% tensile strain and over 1000 stretching cycles at 5% strain.
Enabled emission-direction steering (±50°), rotation-rate measurement, and beam-angle control.

Conclusions:

The developed flexible nanolaser overcomes stability issues in nanostructure lattices under deformation.
Potential applications include facial recognition, human-computer interactions, and embodied intelligence.
The device offers a stable, flexible platform for advanced photonic applications.