Monoenergetic Positronium Emission from Metal-Organic Framework Crystals
نویسندگان
چکیده
منابع مشابه
Monoenergetic positronium emission from metal-organic framework crystals.
Recently it has been discovered that positronium (Ps), after forming in metal-organic framework (MOF) crystals, is emitted into vacuum with a high efficiency and low energy that can only be explained by its propagating as delocalized Bloch states. We show that the Ps atoms are emitted from MOFs in a series of narrow energy peaks consistent with Ps at Bloch-state energy minima being emitted adia...
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P. Crivelli,1,* D. Cooke,1 B. Barbiellini,2 B. L. Brown,3 J. I. Feldblyum,4,5 P. Guo,4 D. W. Gidley,6 L. Gerchow,1 and A. J. Matzger4 1Institute for Particle Physics, ETH Zurich, Switzerland 2Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA 3Department of Physics, Marquette University, Milwaukee, Wisconsin 53233, USA 4Department of Chemistry, University of Michig...
متن کاملMetal-organic framework materials as nano photocatalyst
Photocatalytic degradation of toxic organic compound in water, soil and air by semiconductor catalysts such as TiO2 and ZnO have received much attention over the last two decades. However, the low quantum yield, easy agglomeration and difficult post-separation of these inorganic catalysts limit their application for large-scale applications. Metal-organic frameworks (MOFs) are the latest class ...
متن کاملMetal-organic framework materials as nano photocatalyst
Photocatalytic degradation of toxic organic compound in water, soil and air by semiconductor catalysts such as TiO2 and ZnO have received much attention over the last two decades. However, the low quantum yield, easy agglomeration and difficult post-separation of these inorganic catalysts limit their application for large-scale applications. Metal-organic frameworks (MOFs) are the latest class ...
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Many metal-organic frameworks are water labile, including the iconic Hong-Kong University of Science and Technology-1 (HKUST-1). Spray-dry encapsulation of HKUST-1 crystals into polystyrene microspheres is reported here to yield composites that are resistant to water but retain most of the excellent gas sorption capacity of HKUST-1. These composites are demonstrated to exhibit superior water ad...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2015
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.114.153201