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Related Concept Videos

Metallic Solids02:37

Metallic Solids

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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....
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Lewis Acids and Bases02:33

Lewis Acids and Bases

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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...
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Weak Base Solutions03:21

Weak Base Solutions

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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...
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Base Excision Repair01:54

Base Excision Repair

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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...
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Ions as Acids and Bases02:54

Ions as Acids and Bases

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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:
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Related Experiment Video

Updated: Feb 6, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
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A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

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Fabrication of high-performance MXene-based all-solid-state flexible microsupercapacitor based on a facile scratch

Peng Li1, Wenhui Shi2, Wenxian Liu1

  • 1College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.

Nanotechnology
|August 17, 2018
PubMed
Summary

Researchers developed a low-cost

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A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • MXenes, particularly Ti3C2Tx, show potential as electrode materials for microsupercapacitors (MSCs) due to their excellent capacitance.
  • High-performance MSCs require not only advanced electrode materials but also efficient interdigital electrode fabrication.

Purpose of the Study:

  • To demonstrate a facile, fast, and cost-effective method for patterning Ti3C2Tx nanosheets for MSC fabrication.
  • To investigate the performance of Ti3C2Tx-based all-solid-state MSCs fabricated using this new strategy.

Main Methods:

  • A 'scratch' strategy was employed to pattern few-layered Ti3C2Tx nanosheets onto various substrates.
  • Fabrication of Ti3C2Tx-based all-solid-state microsupercapacitors.

Main Results:

  • Achieved a high areal capacitance of 25.5 mF cm-2 in the fabricated Ti3C2Tx-based MSC.
  • The planar MSC exhibited good cycling stability and excellent flexibility.
  • The fabrication strategy is adaptable for other composite films for MSC applications.

Conclusions:

  • The 'scratch' strategy provides an efficient and economical route for fabricating high-performance MXene-based microsupercapacitors.
  • The developed MSCs show promise as flexible micropower sources for miniaturized electronic devices.