Hydrophobic Prediction Model and Experimental Study of PMMA Surface Microstructure Prepared by Femtosecond Laser Direct Writing
نویسندگان
چکیده
In this paper, a femtosecond laser removal model of PMMA was built, and the surface primary secondary microstructures were fabricated. The morphology wettability measured analyzed by an ultra-depth three-dimensional microscope contact angle measuring instrument. results showed that direct writing processing microstructure changed from hydrophilic state to hydrophobic state. Meanwhile, size parameters multistage on optimized, according numerical simulation. optimized could exceed 150°, achieving superhydrophobicity surface.
منابع مشابه
Direct femtosecond laser writing of waveguides in As2S3 thin films.
Single-channel waveguides and Y couplers were fabricated in chalcogenide thin films by use of femtosecond laser pulses from a 25-MHz repetition rate Ti:sapphire laser. Refractive-index differentials (delta n > 10(-2)) were measured through interferometric microscopy and are higher than the typical values reported for oxide glasses. The dependence of the index differential on the peak intensity ...
متن کاملFemtosecond fiber laser direct writing of optical waveguide in glasses
There is a great deal of interests and efforts in the area of femtosecond (fs) laser direct writing of transparent materials, which shows promise to be a powerful and flexible technique for rapid fabrication of photonic micro-device, such as gratings, waveguides and optical amplifiers. Waveguide properties depend critically on the sample material properties and writing laser characteristics. In...
متن کاملProcessing microstructure on film by femtosecond laser
Selective laser patterning of thin films in a multilayer film is an emerging technology for fabrication of MEMS devices. A 775 nm Ti:sapphire laser (130 fs, 1 kHZ) was used to irradiate the thin film stacks with variations in process parameters such as feed rate and numerical aperture of objective lens. Femtosecond laser patterning of Au/Cr films which have the same thickness of about 1000 nm a...
متن کاملDiffusion-assisted high-resolution direct femtosecond laser writing.
We present a new method for increasing the resolution of direct femtosecond laser writing by multiphoton polymerization, based on quencher diffusion. This method relies on the combination of a mobile quenching molecule with a slow laser scanning speed, allowing the diffusion of the quencher in the scanned area and the depletion of the multiphoton-generated radicals. The material we use is an or...
متن کاملLASER EMISSION IN DIODE-PUMPED Nd:YAG SINGLE-CRYSTAL WAVEGUIDES REALIZED BY DIRECT FEMTOSECOND-LASER WRITING TECHNIQUE
Buried waveguides have been realized in a 0.7 at.% Nd:YAG single crystal using the direct-writing technique with a femtosecond laser. Efficient laser emission at 1.06 and 1.32 μm is demonstrated and laser action at 0.94 μm is obtained using the pump with fiber-coupled diode laser at 807 nm, the first demonstration of such devices.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Coatings
سال: 2022
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings12121856