研究目的
To propose a simple strategy for fabricating microfluidic channels based on underwater superpolymphobic microgrooves with nanoscale rough surface structure on glass surface produced by femtosecond laser processing.
研究成果
The study demonstrates a simple strategy to fabricate microfluidic channels based on the underwater superpolymphobicity of fs laser-structured microgrooves. The laser-induced micro/nanostructures have the ability to repel liquid PDMS underwater, enabling the preparation of microchannels between glass substrates and PDMS layers. The programmable nature of laser scanning allows for the design of arbitrary-shaped microchannels and complex microfluidic systems. The concept of underwater superpolymphobicity offers new strategies for controlling polymer adhesion and shape, with potential applications in polymer preparation, casting industry, and 3D printing technology.
研究不足
The study is limited to the fabrication of microfluidic channels on glass substrates using femtosecond laser processing. The size of the microchannels is determined by the laser power and scanning interval, which may limit the resolution and complexity of the microfluidic systems that can be fabricated.
1：Experimental Design and Method Selection:
The study utilizes femtosecond laser direct writing to create microgrooves with nanoscale rough surface structures on glass surfaces. The methodology involves laser scanning at specific intervals and powers to achieve desired micro/nanostructures.
2：Sample Selection and Data Sources:
Glass microscope slides were used as substrates. The wettability and adhesion properties were measured using contact angle measurements.
3：List of Experimental Equipment and Materials:
A femtosecond laser system with a center wavelength of 800 nm and repetition rate of 1 kHz, a plano-convex lens with a focal length of 25 cm, and liquid PDMS (DC-184, Dow Corning Corporation).
4：Experimental Procedures and Operational Workflow:
Microgrooves were written on glass substrates by fs laser scanning. The substrates were then immersed in water, and uncured liquid PDMS was poured onto the glass surface in water. After curing, microchannels were formed between the laser-induced microgrooves and the cured PDMS film.
5：Data Analysis Methods:
The wettability was measured using a contact-angle measurement system. The morphology of the laser-induced microgrooves was observed using scanning electron microscopy and laser confocal microscopy.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
