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Related Concept Videos

Metallic Solids02:37

Metallic Solids

18.4K
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....
18.4K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

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The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
353
Bonding in Metals02:32

Bonding in Metals

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Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
47.4K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

20.8K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.8K
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

260
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
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MOS Capacitor01:25

MOS Capacitor

798
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
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Ultrasound Velocity Measurement in a Liquid Metal Electrode
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Ultrasound Velocity Measurement in a Liquid Metal Electrode

Published on: August 5, 2015

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Liquid Metal Memory.

Ruizhi Yuan1, Yingjie Cao1, Xiyu Zhu1

  • 1Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China.

Advanced Materials (Deerfield Beach, Fla.)
|December 1, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel flexible memory using liquid metals inspired by the human brain. This breakthrough enables robust, high-performance data storage in deformable electronic devices.

Keywords:
erasable memoryliquid metalsresistive memorysmart mattersoft device

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Area of Science:

  • Materials Science
  • Electronics Engineering
  • Neuroscience

Background:

  • Existing electronic storage solutions face limitations in flexibility.
  • Achieving truly flexible memory is a significant challenge in modern electronics.

Purpose of the Study:

  • To propose a novel storage principle for fully flexible memory.
  • To utilize liquid metal oxidation and deoxidation for data storage.
  • To overcome the rigidity limitations of conventional electronic storage.

Main Methods:

  • Reversible electrochemical oxidation of liquid metals to modulate conductivity.
  • Systematic optimization of parameters for storage performance.
  • Conceptual experiments demonstrating stability under extreme deformations (stretching, bending, twisting).

Main Results:

  • Achieved an 11-order resistance difference for binary data storage.
  • Demonstrated memory stability under 100% stretching, 180° bending, and 360° twisting.
  • Observed improved performance with smaller unit sizes, indicating superior integrability.

Conclusions:

  • A novel flexible memory system based on liquid metal electrochemical properties was successfully developed.
  • The system exhibits remarkable performance: >33 Hz storage speed, >43200 s data retention, and >3500 cycles of stable operation.
  • This innovation opens avenues for neuromorphic devices, soft robotics, wearable electronics, and bio-inspired AI.