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Related Concept Videos

Impact of Individuals on Individuals01:30

Impact of Individuals on Individuals

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Human behavior is intricately shaped by social influences that arise from interactions with others in diverse contexts. These influences not only mold beliefs and attitudes but also drive the regulation of behaviors through both direct communication and observational learning. The study of these processes falls within the domain of social psychology, which seeks to understand how individuals are affected by and affect those around them.Mechanisms of Social InfluenceDirect social influence...
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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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Groups play a fundamental role in shaping individual behavior, as they establish norms that guide interactions and decision-making. Social psychology examines how individuals conform to group expectations, often adjusting their attitudes and actions to align with group norms. These norms can be formal, such as workplace policies, or informal, such as unspoken social expectations within a fraternity.Conformity and Social InfluenceConformity arises when individuals modify their behaviors or...
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Updated: Feb 4, 2026

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Diameter-Dependent Superconductivity in Individual WS2 Nanotubes.

Feng Qin1, Toshiya Ideue1, Wu Shi1,2

  • 1Quantum-Phase Electronics Center (QPEC) and Department of Applied Physics , the University of Tokyo , Tokyo 113-8656 , Japan.

Nano Letters
|October 5, 2018
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Summary

Superconductivity in tungsten disulfide (WS₂) nanotubes was investigated. Critical temperature unexpectedly scaled linearly with nanotube inverse diameter, offering new insights into superconductivity mechanisms in nanostructures.

Keywords:
Transition metal dichalcogenidesionic liquid gatingnanotubesuperconductivity

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Transition metal dichalcogenide nanotubes offer unique platforms for studying superconductivity.
  • Understanding superconductivity in low-dimensional systems is crucial for future electronic applications.

Purpose of the Study:

  • To investigate the diameter dependence of superconductivity in individual WS₂ nanotubes.
  • To explore the relationship between nanotube curvature and superconducting properties.

Main Methods:

  • Electrochemical doping using ionic gating technique.
  • Estimation of nanotube diameter via the Little-Parks effect (periodic oscillating magnetoresistance).

Main Results:

  • Superconductivity was successfully induced in individual WS₂ nanotubes.
  • The critical temperature of superconductivity exhibited a linear relationship with the inverse diameter (curvature) of the nanotubes.

Conclusions:

  • The findings reveal a significant diameter dependence of superconductivity in WS₂ nanotubes.
  • This study provides a new perspective on superconductivity mechanisms in crystalline nanostructures and opens avenues for future research.