H-Bar Instruments LLC is a U.S.-based deep-tech startup founded in 2022 and headquartered in Ann Arbor, Michigan, focused on developing advanced instrumentation for ultra-low-temperature electron microscopy and atomic-scale imaging; the companys core innovation is a liquid-heliumbased cooling system (often in the form of a specialized microscope holder) that enables scientists to observe materials at temperatures near absolute zero with extremely high stability and atomic resolution, which is critical for research in quantum materials, semiconductors, energy systems, and nanotechnology, and the company emerged from collaborative research at the University of Michigan and Harvard, has received National Science Foundation (NSF) SBIR funding to commercialize its technology, and operates as a small, venture-backed firm working to expand the capabilities of existing electron microscopes rather than replacing th