Related Experiment Video
Updated: Oct 8, 2025
10:17
Patterning of Microorganisms and Microparticles through Sequential Capillarity-assisted Assembly
Published on: November 4, 2021
3.4K
A Simple Approach to MXene Micropatterning from Molecularly Driven Assembly
Linh Chi T Cao1, Chao-An Jong2, Shu-Han Hsu1
1Sirindhorn International Institute of Technology, Thammasat University, Khlong Nueng, Pathum Thani 12120, Thailand.
ACS Omega
|January 5, 2022
Summary
A new micropatterning method enables stable MXene adsorption on silicon substrates via molecular assembly. This technique offers precise MXene (a 2D material) patterning for advanced sensing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Chemistry
Background:
- MXene materials offer unique properties for electronic and sensing applications.
- Controlling MXene assembly on substrates is crucial for device fabrication.
- Existing methods often lack stability or require complex surface modifications.
Purpose of the Study:
- To develop a stable and selective MXene adsorption strategy using molecularly driven assembly.
- To create well-defined MXene micropatterns on silicon substrates.
- To investigate the properties and potential applications of the patterned MXene.
Main Methods:
- Micropatterning via microcontact printing (μCP) of a silicon substrate.
- Molecularly driven assembly of MXene flakes onto the functionalized surface.
- Characterization using scanning electron microscopy (SEM) and atomic force microscopy (AFM).
- Stability testing via rinsing and sonication.
- X-ray photoelectron spectroscopy (XPS) for bonding analysis.
- Sheet resistance measurements.
Main Results:
- Achieved stable and selective MXene adsorption with uniform coverage.
- Created thin (approx. 50 nm) MXene patterns with sub-100 μm resolution.
- Demonstrated high stability against rinsing and sonication due to covalent bonding.
- Obtained low sheet resistance (approx. 154.67 Ω/□) for the patterned MXene layer.
- Preserved intrinsic MXene surface properties for further functionalization.
Conclusions:
- The demonstrated micropatterning strategy provides a robust method for MXene assembly.
- This technique enables the creation of high-performance MXene-based sensing platforms.
- The method is versatile, applicable to various geometries without complex ink preparation.
