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Related Concept Videos

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films07:08

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

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Here, we present a protocol for the in situ synthesis of gold nanoparticles (AuNPs) within the interlayer space of layered titanate films without the aggregation of AuNPs. No spectral change was observed even after 4 months. The synthesized material has expected applications in catalysis, photo-catalysis, and the development of cost-effective plasmonic...
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Semiconductors12:36

Semiconductors

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Source: Derek Wilson, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA
Semiconductors are materials whose ability to conduct an electrical current depends strongly on their temperature and level of impurity. The most common type of semiconductor material is crystalline silicon. Most pure semiconductors are not outstanding conductors; to improve conductivity, a pure semiconductor is often combined or...
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Semiconductors01:22

Semiconductors

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There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
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We describe the approaches for the device fabrication and electrical characterization of molybdenum diselenide (MoSe2) layer semiconductor nanostructures with different thicknesses. In addition, the fabrication of ohmic contacts for MoSe2-layer nanocrystals by the focused-ion beam deposition method using platinum (Pt) as a contact metal is described.
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A biomembrane force probe (BFP) is an in situ dynamic force spectroscopy (DFS) technique. BFP can be used to measure the spring constant of molecular interactions on living cells. This protocol presents spring constant analysis for molecular bonds detected by BFP.
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Related Experiment Video

Updated: Jan 19, 2026

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films
07:08

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

Published on: January 17, 2017

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In Situ Probing Molecular Intercalation in Two-Dimensional Layered Semiconductors.

Qiyuan He, Zhaoyang Lin, Mengning Ding

    Nano Letters
    |September 10, 2019
    PubMed
    Summary
    This summary is machine-generated.

    Electrochemical intercalation creates tunable superlattices from 2D layered materials and molecules. This method precisely integrates materials, enabling new organic/inorganic superlattices with controllable properties.

    Keywords:
    Molecular superlatticein situ electrochemistrymolecular intercalationphase transitiontransition metal dichalcogenides

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    In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films
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    Area of Science:

    • Materials Science
    • Nanotechnology
    • Electrochemistry

    Background:

    • Two-dimensional layered materials (2DLMs) offer unique properties for advanced applications.
    • Electrochemical molecular intercalation enables precise integration of 2DLMs with molecular layers.
    • This process allows for the creation of novel organic/inorganic superlattices.

    Purpose of the Study:

    • To develop an on-chip platform for in situ monitoring of electrochemical molecular intercalation.
    • To understand the intermediate stages and dynamics of superlattice formation.
    • To investigate the tunability of chemical, electronic, and optical properties in resulting superlattices.

    Main Methods:

    • Development of an on-chip platform using MoS2 model devices.
    • Utilized optical, electrochemical, and in situ electronic characterizations.
    • Monitoring device conductance changes to track intercalation dynamics.

    Main Results:

    • Cetyltrimethylammonium bromide (CTAB) intercalation induced a phase transition in MoS2 (2H to 1T), significantly increasing conductivity.
    • In situ conductance monitoring revealed abrupt conductivity changes indicating molecule intercalation.
    • Tetraheptylammonium bromide (THAB) intercalation resulted in less charge injection, avoiding the MoS2 phase transition.

    Conclusions:

    • The developed platform enables in situ monitoring of molecular intercalation in various 2DLMs.
    • This technique allows for systematic probing of electronic, optical, and optoelectronic properties at the single-nanosheet level.
    • The study demonstrates a powerful method for creating and characterizing tunable organic/inorganic superlattices.