en لیزرها، تقویت کننده‌‏های اپتیکی و اپتیک لیزر Lasers, Optical Amplifiers, Laser Optics پژوهشي Research <span style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">In recent years, global climate change and population growth have exacerbated freshwater shortages. To address this issue, harvesting water from atmospheric fog has emerged as a promising technique. Inspired by natural processes, the fabrication of hybrid hydrophilic (HI) and superhydrophobic (SHB) surfaces has gained significant attention for enhancing water harvesting efficiency. This study presents a simple, cost-effective laser ablation method for creating wettability contrast surfaces with triangular and parallel patterns on brass metal. Through X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM), we investigated the structural and morphological effects on the wettability behavior of irradiated and non-irradiated brass. Additionally, we examined the influence of pattern shapes on water harvesting efficiency. Our findings indicate that triangular patterns significantly enhance water harvesting performance compared to parallel patterns.</span></span> brass, hydrophilic, hydrophobic, laser ablation, wettability, water harvesting. 213 220 http://ijop.ir/browse.php?a_code=A-10-789-2&slc_lang=en&sid=1 Arezou Joudaki joudaki.arezoo78@gmail.com 10031947532846005151 10031947532846005151 No Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan Babak Jaleh jaleh@basu.ac.ir 10031947532846005152 10031947532846005152 Yes Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan Ensiye Shabanlou en30.sh.sh73@gmail.com 10031947532846005153 10031947532846005153 No Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan Saeid Azizian sazizian.sazizian@basu.ac.ir 10031947532846005154 10031947532846005154 No Department of Chemistry Physics, Faculty of Chemistry, Faculty of Chemistry and Petroleum Sciences Bu-Ali Sina University, Hamedan.