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Related Concept Videos

Alkali Metals03:06

Alkali Metals

24.5K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
24.5K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

24.2K
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...
24.2K
Properties of Transition Metals02:58

Properties of Transition Metals

29.7K
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.
29.7K
Bonding in Metals02:32

Bonding in Metals

52.3K
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”. 
52.3K
Metallic Solids02:37

Metallic Solids

20.6K
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....
20.6K
Long-term Depression01:05

Long-term Depression

33.2K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Updated: Jan 28, 2026

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation
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Long-Term Stable Biosensing Using Multiscale Biostructure-Preserving Metal Thin Films.

Kenshin Takemura1,2, Taisei Motomura2, Yuko Takagi3

  • 1Integrated Research Center for Wellbeing, National Institute of Advanced Industrial Science and Technology (AIST), Tosu 841-0052, Saga, Japan.

Biosensors
|January 27, 2026
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Summary
This summary is machine-generated.

This study introduces a novel metallic microspace fabrication method for enhanced biosensor durability and sensitivity. This technique improves rapid detection of pathogens like Norovirus-like particles (NoV-LPs), aiding infectious disease containment.

Keywords:
biosensorbiostructureinfectious diseasemicroparticle

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Area of Science:

  • Biotechnology
  • Materials Science
  • Nanotechnology

Background:

  • Traditional biosensors utilize antibodies or aptamers for biostructure recognition but face limitations in sensitivity, durability, and response time.
  • Commercialization of disposable biosensors has enabled rapid diagnostics, crucial for pandemic response, yet challenges remain.
  • Molecular imprinting and other mold fabrication technologies require enhancement for improved robustness.

Purpose of the Study:

  • To develop a novel microspace fabrication technique using metallic materials for enhanced biosensor durability.
  • To improve the sensitivity and reusability of biosensors for pathogen detection.
  • To create a more robust platform for environmental monitoring and infectious disease surveillance.

Main Methods:

  • Low-damage metal deposition was applied to target protozoa and Norovirus-like particles (NoV-LPs) to create thin metallic films.
  • Microspaces were fabricated on these metallic films, forming bio-structured spaces.
  • The sensitivity and reusability of the fabricated metallic microspaces were evaluated.

Main Results:

  • The fabrication procedure for fitting objects into the bio-structured space took less than a minute.
  • A sensitivity of 10 fg/mL was achieved for Norovirus-like particles (NoV-LPs).
  • The metallic film substrates demonstrated no decrease in reactivity after repeated use and storage at room temperature, indicating high durability.

Conclusions:

  • Integrating stable metallic structures with bio-recognition elements significantly enhances biosensor robustness and reliability.
  • This approach holds potential for improved environmental monitoring and early detection of infectious diseases.
  • The developed technology contributes to public health strategies for infectious disease containment.