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Tunneling Negative Differential Resistance in a Flexible Active Composite
Author(s) -
Littlejohn Samuel,
Nogaret Alain,
Crampin Simon
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201100442
Subject(s) - graphite , materials science , quantum tunnelling , semimetal , composite number , nanotechnology , insulator (electricity) , optoelectronics , composite material , band gap
A novel type of negative differential resistance (NDR) is demonstrated in composites incorporating graphite nanoparticles in a silicone matrix. The NDR occurs as the electric field breaks the π ‐band of graphite, initiating a semimetal‐to‐insulator transition. The current peak is robust and tunable with the graphite concentration. This material can produce flexible electronic amplifiers for bioelectronic applications