Advances in Nanotechnology provides a concise yet comprehensive overview of recent developments in nanoscience and nanotechnology, covering the synthesis, characterisation, and application of advanced nanomaterials and functional devices. The book features expert contributions on topics such as upconversion nanoparticles, perovskite nanocrystals, 2D materials, electrocatalysis, energy storage and harvesting, gas sensors, bio-nano interfaces, and functional nanotextiles. By emphasising both fundamental understanding and technological relevance, the volume highlights emerging directions like quantum emission, AI-assisted sensing, and sustainable energy solutions. It serves as a valuable reference for postgraduate students, researchers, and professionals in physics, chemistry, materials science, and engineering.