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VERSION:2.0
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DTSTAMP:20260815T154712Z
LAST-MODIFIED:20180326T133135Z
DTSTART:20180329T193000Z
DTEND:20180329T203000Z
UID:event1934@bu.edu
URL:http://physics.bu.edu/internal/events/show/1934
SUMMARY:"Electrically Conductive Protein Nanowires: A Revolutionary Electro
	nic Material"
DESCRIPTION:Featuring Derek Lovley\, University of Massachusetts Amherst\n\
	nPart of the Biophysics Seminars.\n\nGeobacter\, a common soil microorganis
	m\, produces electrically conductive protein nanowires that have a diameter
	 of 3 nm and are 10-30 µm long. Geobacter uses its nanowires to make elect
	rical connections with other microbial species and minerals. This finding h
	as led to new concepts for the function of microbial communities and new pr
	actical applications for electroactive microorganisms.  More recently\, it 
	has been demonstrated that the properties of the Geobacter protein nanowire
	s can be modified with simple genetic techniques. These electrically conduc
	tive synthetic protein nanowires (e-SPNs) can be modified to tune conductiv
	ity over a broad range; to change the nanowire width; and to add peptide li
	nkers for sensing applications. e-SPNs are attractive as an electronic mate
	rial because they can be produced from renewable feedstocks and are biodegr
	adable\, yet they are also highly robust for device fabrication. Proof-of- 
	concept studies have demonstrated that e-SPNs can be incorporated into poly
	mers to produce conductive composite materials and can be assembled into "t
	apes" and "cables". e-SPNs have many potential advantages over other nanowi
	re materials for the development of nanowire-based sensors. The dynamic sen
	sing capabilities of sensors fabricated with e-SPNs have been demonstrated 
	in proof-of-concept studies designed to produce wearable sensors. Multiple 
	lines of experimental evidence suggest that e-SPNs have a metallic-like con
	ductivity that can be attributed to overlapping π-π orbitals of aromatic 
	amino acids.  However\, more basic information on the structure of e-SPNs\,
	 mechanisms for electron transport\, and other electronic properties is req
	uired in order to guide the design of e-SPNs for applications as electronic
	 components.
LOCATION:SCI 117\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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