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

Quantum Numbers02:43

Quantum Numbers

51.7K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
51.7K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

59.0K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
59.0K
The Dot Product01:26

The Dot Product

265
Measuring how one directional quantity affects another along a specific path involves comparing their orientation and strength. When two such quantities are represented using direction and amount, a numerical result is computed to show how much one acts along the path of the other. This result comes from a rule combining both inputs' horizontal and vertical parts and adding the results.This calculation gives a single value that grows larger when both inputs point in similar directions and...
265
Dot Product01:29

Dot Product

992
The dot product is an essential concept in mathematics and physics.
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...
992
Underflow Gates01:30

Underflow Gates

418
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
418
Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

4.1K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
4.1K

You might also read

Related Articles

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

Sort by
Same author

Decoding the epithelial-stromal interactome in allergic rhinitis through single-cell multi-omics integration.

The Journal of allergy and clinical immunology·2026
Same author

N-Heterocycle-Activated π-Cooperative Coordination for Enhancing Structural Stability of Perovskite Solar Cells.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Allosteric PTP1B inhibition as a source of multi-mechanistic anti-tumor activity.

Bioorganic chemistry·2026
Same author

Looking Broader for Knowledge Distillation Via Receptive-Field Alignment.

IEEE transactions on pattern analysis and machine intelligence·2026
Same author

Emerging analytical technologies for detecting microplastics and nanoplastics in food: bridging challenges and innovations.

Analytical and bioanalytical chemistry·2026
Same author

Hi MagicRing, tell me where I am: Toward affordable, physically reliable 3D plant phenotyping with MobilePheno3D.

aBIOTECH·2026

Related Experiment Video

Updated: Feb 8, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

15.5K

Ratiometric Fluorescence Platform Based on Modified Silicon Quantum Dots and Its Logic Gate Performance.

Xiangqian Li, Zhan Zhou1, Cheng Cheng Zhang2

  • 1College of Chemistry and Chemical Engineering, Henan Key Laboratory of Function-Oriented Porous Materials , Luoyang Normal University , Luoyang 471934 , PR China.

Inorganic Chemistry
|July 10, 2018
PubMed
Summary

Researchers developed a novel silicon quantum dot (SiQD) optical nanoprobe. This probe enables sensitive detection of zinc ions (Zn2+) and forms the basis for nanoscale molecular logic systems.

More Related Videos

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
15:47

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

17.0K
Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays
07:13

Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays

Published on: June 28, 2024

2.2K

Related Experiment Videos

Last Updated: Feb 8, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

15.5K
Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
15:47

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

17.0K
Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays
07:13

Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays

Published on: June 28, 2024

2.2K

Area of Science:

  • Nanotechnology
  • Materials Science
  • Chemical Sensing

Background:

  • Optical nanoprobes are crucial for sensitive detection.
  • Silicon quantum dots (SiQDs) offer tunable luminescence properties.
  • Developing efficient and selective sensors remains a challenge.

Purpose of the Study:

  • To synthesize a novel optical nanoprobe using silicon quantum dots (SiQDs).
  • To investigate the sensing capabilities of the SiQD nanoprobe for zinc ions (Zn2+).
  • To establish a molecular logic gate system based on the nanoprobe's fluorescence response.

Main Methods:

  • One-pot, low-temperature synthesis of water-soluble SiQDs using 3-(aminopropyl)trimethoxysilane (APTMS) and ascorbic acid (AA).
  • Exploration of excitation-dependent luminescence and emission quenching by salicylaldehyde (SA).
  • Ratiometric fluorescence analysis for Zn2+ detection and construction of an AND molecular logic gate.

Main Results:

  • Intense, excitation-dependent green luminescence from water-soluble SiQDs was achieved.
  • Salicylaldehyde (SA) effectively quenched SiQD emission, enabling an "on-off" optical response.
  • A ratiometric method for Zn2+ detection with a limit of detection of 0.17 μM was established.
  • A molecular logic gate (AND) system was successfully demonstrated using SA and Zn2+ as inputs.

Conclusions:

  • The developed SiQD nanoprobe offers a sensitive and selective platform for Zn2+ detection.
  • The "on-off" fluorescence switching and ratiometric detection provide a robust sensing mechanism.
  • This work paves the way for advanced nanoscale functional sensors and molecular logic systems.