Biomedical Engineering Reference
In-Depth Information
1.5 Summary
One-dimensional.systems.and.wires.are.of.great.interest.to.various.ields.in.the.nanosci-
ence.and.nanotechnology.communities,.especially.for.nanoelectronics..In.this.report,.we.
demonstrate.the.possibility.of.using.protein-NP.hybrids.as.building.blocks.for.various.1D.
systems.that.may.later.be.controlled.in.several.parameters:.length.(number.of.consecutive.
units),.interunit.distance,.conductivity,.selective.attachment.to.surfaces,.formation.meth-
ods,. and. more.. Using. the. SP1-GNP. hybrids. in. a. preprogrammed. way. will. enable. us. to.
gain.good.control.over.these.parameters..Moreover,.the.combination.of.a.conducting.core.
in. a. modiiable. isolating. scaffold. gives. these. systems. additional. advantages. over. other.
exposed.wires.with.uniform.structure.and.chemistry..We.demonstrated.spontaneous.for-
mation. of. nanowires. made. from. the. SP1-GNP. hybrid. building. blocks.. We. also. demon-
strated.wires.that.are.formed.by.combining.the.SP1.protein.and.GNP.hybrids.with.DNA..
Further.development.of.these.structures,.e.g.,.by.reducing.the.interunit.distance.between.
the.GNPs,.will.produce.a.highly.controlled.conductive.wire..By.controlling.the.distance,.
the.composition,.and.the.size.of.the.inner.particle,.we.have.a.new.way.of.investigating.1D.
conductance.mechanisms.at.hand..Combined.with.nonlinear.conductance.behavior,.this.
family.of.conducting.wires.can.serve.as.future.nanodevices.
Acknowledgments
We.thank.Dr..Igor.Brodsky.for.helpful.discussions.and.technical.assistance..We.acknowl-
edge. inancial.support.from.the.DFG.Grant.“Single. Molecule. Based. Ultra.High.Density.
Memory”.CU.44/3-2.and.the.French.Ministry.of.External.Affairs,.Israeli-Palestinian.Science.
Organization,.the.Friends.of.IPSO,.USA.(with.funds.donated.by.the.Meyer.Foundation),.
and.the.James.Franck.Program.
References
.
1.. Bachtold,. A.,. et. al.. Logic. circuits. with. carbon. nanotube. transistors..
Science
,. 2001,. 294(5545):.
1317-1320.
.
2.. Lieber,. C.M.. The. incredible. shrinking. circuit—Researchers. have. built. nanotransistors. and.
nanowires..Now.they.just.need.to.ind.a.way.to.put.them.all.together..
Scientiic American
,.2001,.
285(3):.58-64.
.
3.. McMillan,.R.A.,.et.al..Ordered.nanoparticle.arrays.formed.on.engineered.chaperonin.protein.
templates..
Nature Materials
,.2002,.1(4):.247-252.
.
4.. Tucker,. J.R.. Complementary. digital. logic. based. on. the. coulomb. blockade..
Journal of Applied
Physics
,.1992,.72(9):.4399-4413.
.
5.. Welser,.J.J.,.et.al..Room.temperature.operation.of.a.quantum-dot.lash.memory..
IEEE Electron
Device Letters
,.1997,.18(6):.278-280.
.
6.. Chen,.Z.H.,.et.al..An.integrated.logic.circuit.assembled.on.a.single.carbon.nanotube..
Science
,.
2006,.311(5768):.1735-1735.
