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Related Concept Videos

Attribution Theory00:56

Attribution Theory

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Behavior is a product of both the situation (e.g., cultural influences, social roles, and the presence of bystanders) and of the person (e.g., personality characteristics). Subfields of psychology tend to focus on one influence or behavior over others. Situationism is the view that our behavior and actions are determined by our immediate environment and surroundings. In contrast, dispositionism holds that our behavior is determined by internal factors (Heider, 1958).
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Molecular and Ionic Solids02:54

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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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Fundamental Attribution Error01:14

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According to some social psychologists, people tend to overemphasize internal factors as explanations—or attributions—for the behavior of other people. They tend to assume that the behavior of another person is a trait of that person, and to underestimate the power of the situation on the behavior of others. They tend to fail to recognize when the behavior of another is due to situational variables, and thus to the person’s state. This erroneous assumption is...
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Ionic Radii03:10

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Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
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Ionic Bonds00:42

Ionic Bonds

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Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
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Attribution01:26

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In social interactions, individuals frequently seek to understand the motivations and causes behind others' behaviors. This fundamental aspect of social perception, known as attribution, plays a crucial role in shaping interpersonal relationships and guiding future actions. Attribution refers to the cognitive process through which people infer the reasons behind others' behaviors, allowing them to assess character traits, intentions, and situational influences.Attribution Theory and Its...
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Related Experiment Video

Updated: Jan 25, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

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One-Dimensional Cuprous Selenide Nanostructures with Switchable Plasmonic and Super-ionic Phase Attributes.

Ki-Hyun Cho1, Jaeyoung Heo2, Yun-Mo Sung3

  • 1Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA.

Angewandte Chemie (International Ed. in English)
|April 25, 2019
PubMed
Summary

Researchers developed one-dimensional cuprous selenide nanowires with tunable plasmon resonances and stable super-ionic behavior at lower temperatures. These nanowires can be switched between oxidized and reduced states, offering potential for novel optical and ionic devices.

Keywords:
CdSecation exchangeion conductionplasmonsolid electrolytes

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid-State Physics

Background:

  • Cuprous selenide (Cu₂Se) exhibits tunable localized surface plasmon resonances (LSPRs) and super-ionic behavior.
  • Integrating these properties into one-dimensional nanostructures is crucial for advanced applications.

Purpose of the Study:

  • To synthesize Cu₂Se nanowires (NWs) with controlled dimensions.
  • To investigate the influence of one-dimensional morphology on super-ionic phase stability and LSPR characteristics.
  • To explore the switchable properties of Cu₂Se NWs between oxidized and reduced states.

Main Methods:

  • Synthesis of micrometer-scale Cu₂Se NWs with approximately 10 nm diameter.
  • Characterization of phase transition temperatures and LSPR properties.
  • Investigation of redox switching behavior.

Main Results:

  • Cu₂Se NWs exhibit a super-ionic phase stable at lower temperatures than bulk due to radial compressive lattice strain.
  • Oxidized and reduced forms of the NWs show distinct phase transition and LSPR characteristics.
  • The nanowires demonstrate switchable optical and ionic properties.

Conclusions:

  • One-dimensional Cu₂Se NWs offer a platform for stable, low-temperature super-ionic behavior.
  • Switchable oxidized/reduced states enable tunable LSPR and phase transitions.
  • These NWs are promising for developing one-dimensional waveguides and ion-conducting channels.