Hadi Teguh Yudistira, Achmad Gus Fahmi, Natasya Salsabiila, Suratun Nafisah, Muhamad Fauzi, Abdul Rajak, Marlia Morsin, Adhitya Gandaryus Saputro, Mohammad Kemal Agusta, Muhammad Haris Mahyuddin
We demonstrate enhanced light absorption in titanium dioxide (TiO2) thin films using a novel metamaterial design. A 40 nm gold nanosphere array was integrated as a unit cell, modifying the TiO2 scattering properties. Two substrate configurations were investigated: glass (analyzed via Ultraviolet (UV) visible spectroscopy and numerical simulations of the S21 parameter, showing decreased transmittance in the 0.3–0.8 PHz range) and a perfect electrical conductor (analyzed numerically and analytically via the S11 parameter and reflection superposition, revealing strong absorbance from 0.85–1.4 PHz, corresponding to the TiO2 bandgap). Near-perfect air impedance matching (|(z(real) - 1) + z(imaginary)| = 0.56 at 1.19 PHz) was achieved with a 50 nm gap between the gold nanospheres and the TiO2 layer. This approach offers a promising pathway for enhancing the performance of TiO2-based photocatalytic devices, particularly for water-splitting applications. © 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
Mechanical Engineering Study Program, Institut Teknologi Sumatera (ITERA), Lampung, South Lampung, Indonesia; Faculty of Industrial Technology, Institut Teknologi Sumatera (ITERA), Lampung, South Lampung, Indonesia; Cosmetic Engineering Study Program, Institut Teknologi Sumatera (ITERA), Lampung, South Lampung, Indonesia; Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia; Microelectronic and Nanotechnology, Shamsuddin Research Centre, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia; Electrical Engineering Study Program, Institut Teknologi Sumatera (ITERA), Lampung, South Lampung, Indonesia; Physics Study Program, Institut Teknologi Sumatera (ITERA), Lampung, South Lampung, Indonesia; Quantum and Nano Technology Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, Indonesia; Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Bandung, Indonesia
Research at a Glance
Register to unlock
Topics & SDG Alignment
Register to unlock
Collaboration
Register to unlock
Author Profile (Selected)
Register to unlock
References Overview
Register to unlock
Journal & Source
Register to unlock
Metadata & Integrity
Register to unlock