CH. KALYANI,B. ABHISHEK RAJ,CHEKURI MAHITA,Y. KARTHIK 03 01 Nanotechnology has emerged as a transformative field that enables the manipulation of matter at the nanometer scale where unique physical phenomena govern material behavior Applied physics plays a crucial role in bridging fundamental nanoscale science with practical engineering applications This review paper presents a comprehensive survey of the applications of nanotechnology in applied physics focusing on nanomaterials nanoelectronics nanophotonics energy systems sensors and emerging quantum technologies A systematic literature review methodology was adopted covering peerreviewed journal articles published over the last decade The reviewed studies demonstrate that nanotechnology significantly enhances electrical optical thermal and mechanical properties enabling highperformance devices with reduced size weight and power consumption Despite substantial progress challenges such as fabrication complexity scalability reliability and environmental concerns remain critical barriers to largescale adoption This review identifies key research trends compares major findings across application domains and highlights existing research gaps Finally future directions are discussed emphasizing sustainable nanomaterials multiphysics modeling and the integration of nanotechnology with intelligent systems The paper aims to serve as a valuable reference for researchers academicians and practitioners working in applied physics and nanotechnologydriven systems Copyright (c) Journal of Science Engineering Technology and Management Science. All rights reserved 2026