{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Athena FF"],"funding":["IBM Research","Air Force Office of Scientific Research","Stanford Precourt Institute for Energy","National Science Foundation"],"pagination":["e18784"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12904008"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["13(9)"],"pubmed_abstract":["Since the initial synthesis of van der Waals 2D indium selenide is first documented in 1957, five distinct polymorphs and their corresponding polytypes are identified. In this study, a unique phase of indium selenide is reported via Scanning Transmission Electron Microscopy (STEM) analysis in the synthesized large-area films - which is named the βp$\\ubeta^{\\text{p}}$ phase. The quintuple layers of the βp$\\ubeta^{\\text{p}}$ phase, characterized by a unique zigzag atomic configuration with unequal indium-selenium bond lengths from the middle selenium atom, are distinct from any other previously reported phase of indium selenide. Cross-sectional STEM analysis has revealed that the βp$\\ubeta^{\\text{p}}$ layers exhibit intralayer shifting. It is found that indium selenide films with βp$\\ubeta^{"],"journal":["Advanced science (Weinheim, Baden-Wurttemberg, Germany)"],"pubmed_title":["A Van der Waals Material Exhibiting Room Temperature Broken Inversion Symmetry with Ferroelectricity."],"pmcid":["PMC12904008"],"funding_grant_id":["ECCS‐1542174","IBM PhD Fellowship","NNCI‐2025608","DMR-2004749","FA9550-18-1-0024","FA9550‐18‐1‐0024","Stanford Energy Postdoctoral Fellowship","ECCS-1542174","DMR‐2004749","NNCI-2025608"],"pubmed_authors":["Tian M","Jeon S","Wagner BK","Goswami A","Voigt CA","Mammo F","Athena FF","Nnaji M","Toph E","Cai W","Vogel EM"],"additional_accession":[]},"is_claimable":false,"name":"A Van der Waals Material Exhibiting Room Temperature Broken Inversion Symmetry with Ferroelectricity.","description":"Since the initial synthesis of van der Waals 2D indium selenide is first documented in 1957, five distinct polymorphs and their corresponding polytypes are identified. In this study, a unique phase of indium selenide is reported via Scanning Transmission Electron Microscopy (STEM) analysis in the synthesized large-area films - which is named the βp$\\ubeta^{\\text{p}}$ phase. The quintuple layers of the βp$\\ubeta^{\\text{p}}$ phase, characterized by a unique zigzag atomic configuration with unequal indium-selenium bond lengths from the middle selenium atom, are distinct from any other previously reported phase of indium selenide. Cross-sectional STEM analysis has revealed that the βp$\\ubeta^{\\text{p}}$ layers exhibit intralayer shifting. It is found that indium selenide films with βp$\\ubeta^{","dates":{"release":"2026-01-01T00:00:00Z","publication":"2026 Feb","modification":"2026-07-15T15:36:07.999Z","creation":"2026-07-06T03:11:00.33Z"},"accession":"S-EPMC12904008","cross_references":{"pubmed":["41347678"],"doi":["10.1002/advs.202518784"]}}