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High‐Sensitivity Hydrogen Detection: Hydrogen‐Induced Swelling of Multiple Cracked Palladium Films on Compliant Substrates
Author(s) -
Gurlo Aleksander,
Clarke David R.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201103845
Subject(s) - palladium , materials science , hydrogen , elastomer , swelling , substrate (aquarium) , composite material , nickel , nanotechnology , metallurgy , chemistry , catalysis , organic chemistry , oceanography , geology
Hydrogen sponge : The reversible swelling of palladium–nickel alloys upon hydrogen absorption mechanically closes nanogaps in multiple cracked Pd–Ni films on elastomeric substrate allowing for the electric current to flow across (see picture). When the hydrogen is removed the elastomer elastically returns to its original state reopening numerous potential break junctions along each crack.