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Related Concept Videos

Metallic Solids02:37

Metallic Solids

19.6K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
19.6K
Properties of Transition Metals02:58

Properties of Transition Metals

27.8K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
27.8K
Types Of Superconductors01:28

Types Of Superconductors

1.2K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.2K
Valence Bond Theory02:42

Valence Bond Theory

9.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
9.9K
The Periodic Table03:25

The Periodic Table

91.4K
As early chemists discovered more elements, they realized that various elements could be grouped by their similar chemical behaviors. One such grouping includes lithium (Li), sodium (Na), and potassium (K). All of these elements are shiny, conduct heat and electricity well, and have similar chemical properties. A second grouping includes calcium (Ca), strontium (Sr), and barium (Ba), which also are shiny, good conductors of heat and electricity, and have chemical properties in common. However,...
91.4K
Periodic Classification of the Elements04:00

Periodic Classification of the Elements

53.2K
The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature
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Tunable 2D Group-III Metal Alloys.

Siavash Rajabpour1,2, Alexander Vera2,3, Wen He4,5

  • 1Department of Chemical Engineering, The Pennsylvania State University, University Park, Berkeley, PA, 16802, USA.

Advanced Materials (Deerfield Beach, Fla.)
|September 4, 2021
PubMed
Summary

Chemically stable 2D metal alloys offer tunable electronic and optical properties for quantum devices. Researchers synthesized 2D-InₓGa₁₋ₓ alloys using Confinement Heteroepitaxy (CHet), controlling properties via composition.

Keywords:
2D materialsoptical propertiessuperconductivitytunable properties

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Quantum-confined 2D metals are crucial for next-generation nanoscale quantum devices.
  • Tailoring electronic and optical properties is key for applications like tunable plasmonics and nonlinear optics.

Purpose of the Study:

  • To demonstrate controllable tuning of electronic, superconducting, and optical properties in 2D metals through alloy formation.
  • To synthesize robust, large-area 2D alloys with tunable compositions for advanced material design.

Main Methods:

  • Synthesis of 2D-InₓGa₁₋ₓ alloys using Confinement Heteroepitaxy (CHet).
  • Characterization of alloy composition, electronic structure, superconducting properties, and optical response.
  • Investigation of charge transfer dynamics with graphene.

Main Results:

  • Achieved near-complete solid solubility in 2D-InₓGa₁₋ₓ alloys with tunable composition (full range of x).
  • Demonstrated direct correlation between alloy composition and properties: dielectric function, band structure, and superconductivity.
  • Observed controlled charge transfer from the 2D metal alloy to graphene, dependent on the In/Ga ratio.

Conclusions:

  • Environmentally robust 2D metal alloys can be synthesized with precisely controlled electronic and optical properties.
  • Alloying provides a powerful strategy for on-demand material design for nanoscale quantum devices and optoelectronic applications.