Synthesis of gold nanotubes by sputtering of gold into porous materials.
Hollow 1-D gold nanostructures with controlled morphology could be readily obtained by RF-sputtering of gold into porous matrices (polycarbonate, polyester), used as scaffolds at low temperatures. Post-synthesis membrane etching by oxygen plasmas or in solution enabled the preparation of free-standing Au nanotubes maintaining the original morphology, that are attractive elements in device structures, such as biosensors for DNA chips or nanoelectrode ensembles. The present results appear extremely promising for the scale-up of different kinds of 1-D materials.
Barreca
Davide
D
ISTM-CNR and INSTM, Department of Chemistry, Padova University-Via Marzolo, 1-35131 Padova, Italy.
Gasparotto
Alberto
A
Maragno
Cinzia
C
Tondello
Eugenio
E
D015374:Biosensing Techniques; D003460:Crystallization; D004563:Electrochemistry; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry*; D020411:Oligonucleotide Array Sequence Analysis / Q000295:instrumentation; D010100:Oxygen / Q000737:chemistry; D011076:Polycarboxylate Cement / Q000737:chemistry; D011091:Polyesters / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D013696:Temperature; D014965:X-Rays
D011076:Polycarboxylate Cement; D011091:Polyesters; C005506:polycarbonate; D006046:Gold; D010100:Oxygen