MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202441017110 A) filed by University Of Hyderabad, Hyderabad, Telangana, on March 9, 2024, for 'a self cleaning superhydrophobic broadband ultralow reflective stainless-steel sheet material and its fabrication process thereof.'
Inventor(s) include Dr. N. Sri Ram Gopal; Nitin Chaudhary; and Thirunaukkarasu Kuppan.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a broadband ultralow reflective stainless-steel sheet, wherein complex hierarchical micro-nanostructured surfaces are fabricated by the use of an ultrafast laser on a thin SS sheet (203) by creating a grid of 3D pyramid structures which contain nanodots, flowers, and micro- and nanostructures (201) prepared in an inexpensive, scalable, single-step process without using a different material coating/deposition method on stainless steel. 5 W fiber-based femtosecond laser (100) is used to pattern on a 100-micron thin stainless-steel sheet. Sagnac-based interferometer based DLIP is used to create three fringe patterns. The present invention displays sufficient mechanical strength, thermal stability, and rugged nanostructures with super hydrophobic surface with 155.55 contact angle and an average total reflectance of 1.2% was achieved for 400 to 2000 nm optical bandwidth. The reflectance using the thick (1.5 cm) compared to thin (100 m) SS sheet is less. The total reflectivity from 250 to 2200 nm is 1.022 %, while the average reflectivity from 400 to 800 nm is 0.85%."
Disclaimer: Curated by HT Syndication.
