Processing and Characterization of High-conductance Bismuth Wire Array Composites

Huber, T. E.; Graf, M. J.; Foss, Colby A.; Constant, P.

doi:10.1557/jmr.2000.0262

Cited by 46 publications

(32 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The arrays of Bi nanowires employed here are synthesized by injecting 11 molten Bi into anodic alumina templates. The hexagonal array of nanochannels in the templates is selfassembled by the anodization of Al.…”

mentioning

confidence: 99%

Confinement effects and surface-induced charge carriers in Bi quantum wires

Huber

Nikolaeva

Konopko

et al. 2004

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

We present measurements of Shubnikov-de Haas oscillations in arrays of bismuth nanowires. For 80-nm wires, the hole concentration is less than 30% of that for bulk Bi, a finding that is consistent with current models of quantum confinement effects. However, 30-nm-diameter nanowires, which are predicted to be semiconductors, show a nearly isotropic short period of 0.025 T -1 , consistent with a heavy carrier concentration five times that of bulk Bi. These results are discussed in terms of surface-induced charge carriers in a spherical Fermi surface pocket that are uniformly distributed in the 30-nm nanowire volume and that inhibit the semimetal-tosemiconductor transition.

show abstract

mentioning

confidence: 99%

Confinement effects and surface-induced charge carriers in Bi quantum wires

Huber

Nikolaeva

Konopko

et al. 2004

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…[7, 81 Many papers present excellent experimental results documenting conditions at which time anodization forms ordered pores and those at which the pores are irregular and not ordered. [9,10,11] However, to our knowledge, no complete theory exists to predict the optimal acid type, concentration, and temperature that should be used to obtain well-ordered arrays with a uniform pore diameter for a given anodization voltage and corresponding pore diameter. Therefore, whenever the desired pore size has not yet been well studied, many attempts of trial and error are required to establish the recipe for well-ordered In our samples, in addition to the increase in current at breakdown, sizzling occurred at the air/acid interface where the aluminum was exposed to air.…”

Section: Fabrication and Experimental Detailsmentioning

confidence: 99%

Studies of Intersubband Transitions in Arrays of Bi Nanowire Samples Using Optical Transmission

et al. 2001

View full text Add to dashboard Cite

This paper reports the fabrication of large diameter pores (> 150 nm) in anodic alumina that can be used to create wire arrays with significant surface effects, but without significant quantum confinement. These wires, therefore, allow us to distinguish between optical absorption spectra features originating from quantum effects and those from surface effects. The paper presents techniques towards fabricating these bismuth wire arrays, and presents optical absorption data from two bismuth nanowire arrays in the semimetal-semiconductor transition diameter regime. The results from previous publications are summarized and future directions are outlined.

show abstract

“…Two types of templates were generally used, "track-etch" polymeric membrane and porous anodic alumina membrane (AAM). Nanoscopic cylinders can be embedded in templates by pressure injection, sol-gel chemistry, chemical deposition and vapor-phase technique [10][11][12][13][14][15]. A variety of nanowires and nanotubes has been prepared, including metals, semiconductors, polymers, carbon, and many other materials [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%