Fabrication of oil-water separation stainless steel mesh via direct laser interference lithography, candle soot deposition, and thermal treatment

Abstract

In this work, the authors propose a method to obtain micro- and nano-structures on the stainless steel mesh (SSM), which showed the potential application for the treatment of water pollution based on its hydrophobicity and oleophilicity. The textured surfaces with the micrometer scale pore array patterns on the SSM are formed by three-beam laser interference lithography. And the nanostructures, such as nanorods, nanowires, and nanoflakes, are obtained on the surfaces of the SSMs after laser irradiation by heating for 70 min at approximately 600 °C under ambient conditions. The results showed that the nanostructures can be easier to grow on the rough surface than the smooth ones. In addition, these nanostructures are also grown on the surfaces of the laser irradiated SSM with the candle soot (LISSM@C). Raman spectrum proves that the nanostructures are α-Fe2O3 and α-Fe2O3/reduced graphene oxide (rGO). The measurement of the contact angle indicates that the oil-water separation can be realized on the LISSM@C after the thermal treatment.

Fabrication of Piezoelectric ZnO Nanowires on Laser Textured Copper Substrate to Enhance Catalytic Properties

“…The figure shows that most of the ZnO nanowires remain on the copper sheet, which further indicates the strong adhesion of the ZnO nanowires grown on the copper sheet [52]. As shown in Figure 2a,b, a large number of nanoparticles, regular pits [53], and corrugated transition layers were produced on the copper sheet, increasing the roughness of the substrate surface, which may be one of the important reasons for the strong adhesion of ZnO nanowires on the 3D CuO-Cu 2 O substrate [54,55].…”

Fabrication of periodic microscale stripes of silver by laser interference induced forward transfer and their SERS properties

“…Considering the important application of the periodic micro-nano structures in photonic crystals [48,49], light-emitting diode devices [50], sensing and detection [51,52], a LIFT-based technology which could prepare the periodic structures efficiently would be necessary. Laser interference lithography (LIL) had been proved to be the technology with free-mask, large area, low cost and high efficiency in preparing of periodic micro-nano structures [53][54][55][56][57]. Therefore, combining the LIL and LIFT techniques, the laser interference induced forward transfer (LIIFT) was proposed by which the limitation of the printable materials could be broken through and the efficiency for preparation of periodic micro-structures could be promoted.…”