Beam Lithography, Nanoprinting, and EUV Photoresist Materials
This community develops the physical methods and chemical materials used to pattern surfaces at the nanoscale, primarily for semiconductor fabrication and high-resolution imaging.
The work centers on three interconnected technical pillars: focused ion and electron beam systems for direct-write nanofabrication, extreme ultraviolet (EUV) lithography, and the design of specialized photoresists. Recurring methods include beam-induced deposition, where a precursor gas is decomposed by a focused beam to build structures atom-by-atom, and electrochemical etching for high-aspect-ratio features. A significant portion of the research focuses on material chemistry, specifically the synthesis of tin-oxo nanoclusters and low-molecular-mass organic resists that offer high sensitivity and resolution for EUV exposure. The community also investigates secondary ion mass spectrometry for surface analysis and the development of new ion sources, such as those using ionic liquids, to improve beam stability and resolution.
The community’s output is most concentrated in research tracked for helium, where it represents 0.5% of all helium-related papers, and tungsten, accounting for 0.3% of that element’s research. It also constitutes a significant share of silicon research, comprising 0.1% of papers in that category.
The community comprises 4,221 papers, published predominantly in Microscopy and Microanalysis, the Japanese Journal of Applied Physics, and Nanotechnology.
Recent work continues to focus on enhancing lithographic resolution and sensitivity, with new studies detailing tin-oxo nanocluster photoresists for sub-8 nm patterning and advanced ion sources for focused ion beam applications.