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

Base Excision Repair01:54

Base Excision Repair

26.1K
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
26.1K
DNA Base Pairing02:27

DNA Base Pairing

33.0K
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
33.0K
Lewis Acids and Bases02:33

Lewis Acids and Bases

48.2K
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
48.2K
Weak Base Solutions03:21

Weak Base Solutions

24.9K
Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
24.9K
Ions as Acids and Bases02:54

Ions as Acids and Bases

26.2K
Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
26.2K
Acid–Base Equilibria: Activity-Based Definition of pH01:10

Acid–Base Equilibria: Activity-Based Definition of pH

1.2K
For an ideal solution, the pH is defined as the negative logarithm of the hydrogen ion concentration. For a non-ideal solution, an accurate measurement of the pH must consider the negative logarithm of the hydrogen ion activity rather than concentration. In such a solution, the pH can be more accurately defined as the negative logarithm of a product of the hydrogen ion concentration and its activity coefficient.
In solutions of very low ionic strength—for example, pure water—the...
1.2K

You might also read

Related Articles

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

Sort by
Same author

Offsetting costs of new ablation technologies with increased procedural efficiency and volume.

Heart rhythm·2026
Same author

Calcium-molybdenum-cobalt-2-methylimidazole trimetallic organic framework as a saturable absorber for passive mode-locked thulium-holmium doped fiber lasers.

Scientific reports·2026
Same author

Artificial intelligence-guided personalized ablation improves freedom from atrial arrhythmia in heart failure: A sub-analysis of the TAILORED-AF trial.

Heart rhythm O2·2026
Same author

Reablation of atrial fibrillation targeting electrogram dispersion in patients with isolated veins: The RESTART trial.

Heart rhythm·2026
Same author

Evaluation of cutting accuracy and thermal damage in oral soft tissue using different surgical techniques.

Lasers in medical science·2025
Same author

High-efficiency RhB dye degradation using β-FeOOH nanorods <i>via</i> tribocatalysis.

RSC advances·2025

Related Experiment Video

Updated: Jan 24, 2026

Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

9.4K

Tungsten-disulphide-based heterojunction photodetector.

Harith Ahmad, Haroon Rashid, Mohammad Faizal Ismail

    Applied Optics
    |June 4, 2019
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates radio frequency magnetron sputtering for depositing tungsten disulphide (WS2) thin films. The resulting WS2 films show promise for advanced optoelectronic devices, including photodetectors.

    More Related Videos

    Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO
    08:14

    Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO

    Published on: July 31, 2016

    12.6K
    Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application
    08:18

    Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application

    Published on: October 3, 2015

    15.7K

    Related Experiment Videos

    Last Updated: Jan 24, 2026

    Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
    08:29

    Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

    Published on: January 10, 2017

    9.4K
    Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO
    08:14

    Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO

    Published on: July 31, 2016

    12.6K
    Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application
    08:18

    Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application

    Published on: October 3, 2015

    15.7K

    Area of Science:

    • Materials Science
    • Condensed Matter Physics
    • Nanotechnology

    Background:

    • Two-dimensional (2D) materials like tungsten disulphide (WS2) offer unique optoelectronic properties for advanced applications.
    • WS2 exhibits a tunable bandgap in the visible spectrum and strong light absorption.
    • Developing efficient fabrication methods for 2D materials is crucial for their technological integration.

    Purpose of the Study:

    • To deposit a polycrystalline WS2 thin film using radio frequency (RF) magnetron sputtering at room temperature.
    • To characterize the structural, compositional, and optical properties of the deposited WS2 films.
    • To fabricate and evaluate a WS2-based heterojunction photodetector device.

    Main Methods:

    • Radio frequency (RF) magnetron sputtering for WS2 thin film deposition.
    • X-ray diffraction (XRD) for structural analysis.
    • Energy-dispersive X-ray spectroscopy (EDX) for elemental composition.
    • Raman spectroscopy for phonon mode analysis.
    • Fabrication of a sandwiched heterojunction photodetector.

    Main Results:

    • Successfully deposited polycrystalline WS2 thin films with hexagonal structure.
    • Characterized non-stoichiometric WS2 (S/W ratio of 1.25) with Raman shifts at 350.70 cm-1 (E2g1) and 415.60 cm-1 (A1g).
    • Fabricated photodetector achieved photocurrent of 0.95 μA, responsivity of 169.3 mA/W, and detectivity of 1.48×10^8 Jones at 441 nm and 10 V.

    Conclusions:

    • RF magnetron sputtering is an adaptable technique for large-scale WS2 thin film production.
    • The fabricated WS2 photodetector demonstrates significant optoelectronic performance.
    • This work highlights the potential of WS2 for developing advanced optoelectronic devices.