Liquid-like surfaces have demonstrated immense potential in their ability to resist cell adhesion, a critical requirement for numerous applications across various domains. However, the conventional methodologies for preparing liquid-like surfaces often entail a complex multi-step polymer brush modification process, which is not only time-consuming but also presents significant challenges. In this work, we developed a single-cycle polymer brush modification strategy to build liquid-like surfaces by leveraging high-molecular-weight bis(3-aminopropyl)-terminated polydimethylsiloxane, which significantly simplifies the preparation process. The resultant liquid-like surface is endowed with exceptional slipperiness, effectively inhibiting bacterial colonization and diminishing the adherence of platelets. Moreover, it offers promising implications for reducing the dependency on anticoagulants in microfluidic systems constructed from PDMS, all while sustaining its antithrombotic attributes.

Transparent self-cleaning coatings for photovoltaic (PV) glass require an effective balance among contaminant removal, optical transparency, and environmental durability. In this study, octadecyltrichlorosilane-modified silica (OTS-SiO₂) coatings were fabricated on glass substrates using a simple spray-deposition method, and the effects of initial SiO₂ suspension concentration on surface morphology, wettability, droplet mobility, self-cleaning performance, and optical transmittance were systematically investigated. Increasing the SiO₂ concentration promoted the development of particulate surface structures, enhanced water repellency, and reduced contact angle hysteresis, accompanied by improved droplet mobility and dust-removal performance. The OTS-SiO₂-15 coating, prepared using a SiO₂ concentration of 15 mg mL⁻¹, achieved a water contact angle of 140 ± 1.6°, a sliding angle of 3.9 ± 1.5°, a dust-removal efficiency of 91.6%, and a visible-light transmittance of 90.6 ± 0.3%. Further increases in SiO₂ concentration provided only limited improvements in droplet mobility and cleaning performance while substantially reducing optical transparency. Under mechanical impact, both sliding angle and contact angle hysteresis increased despite the retention of relatively high water contact angles, indicating deteriorated droplet mobility. When applied as photovoltaic cover glass, OTS-SiO₂-15 maintained an initial power conversion efficiency (PCE) comparable to that of uncoated glass (8.41% versus 8.43%). After 40 days of outdoor exposure, the normalized PCE decreased by 4.6% for the coated configuration, compared with 10.8% for uncoated glass. These results demonstrate that spray-deposited OTS-SiO₂ coatings can provide a practical balance among droplet mobility, self-cleaning performance, and optical transparency, supporting their potential application in photovoltaic glass protection.