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Updated: May 14, 2026
Photopatterning Proteins and Cells in Aqueous Environment Using TiO2 Photocatalysis
Published on: October 26, 2015
Bioinspired patterning with extreme wettability contrast on TiO2 nanotube array surface: a versatile platform for
Yuekun Lai1, Longxiang Lin, Fei Pan
1Physikalisches Institute and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Münster D-48149, Germany; National Engineering Laboratory of Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, PR China. yklai80@gmail.com.
Researchers created rewritable superhydrophilic/superhydrophobic patterns on titanium dioxide nanotube arrays. This technology enables precise 3D functional pattern construction for applications like targeted drug delivery and high-throughput sensing.
Area of Science:
- Materials Science
- Surface Chemistry
- Nanotechnology
Background:
- Nature utilizes binary wettability patterns for microfluidic control.
- Titanium dioxide nanotube arrays (TNA) offer a versatile surface for patterning.
Purpose of the Study:
- To develop an erasable and rewritable method for creating extreme wettability contrast patterns on TNA.
- To explore the application of these patterns in constructing 3D functional structures for biomedical applications.
Main Methods:
- Fabrication of wettability patterns using self-assembly and photocatalytic lithography.
- Demonstration of site-selective cell immobilization and reversible protein absorption.
- Construction of 3D functional patterns with materials like calcium phosphate, silver nanoparticles, drugs, and biomolecules.
Main Results:
- Achieved extreme wettability contrasts (superhydrophilic/superhydrophobic) on TNA surfaces.
- Successfully created 2D scaffolds for selective cell and protein manipulation.
- Demonstrated the ability to construct well-defined 3D functional patterns with high selectivity.
- Validated the potential for surface-enhanced Raman scattering, antibacterial activity, and targeted drug delivery using 3D AgNP@TNA patterns.
Conclusions:
- The developed method provides a facile approach for creating rewritable wettability patterns.
- These patterns serve as a versatile platform for fabricating 3D functional structures.
- The technology holds significant promise for advanced biomedical devices, including molecular sensing, antibacterial treatments, and drug delivery systems.
