Single pulse deposition of Pd–Ag alloy nanowires on highly oriented pyrolytic graphite: A mechanistic assessment

Tang, Lili; Yu, Gang; Ouyang, Yongzhong; Si, Weiwei; Weng, Baicheng

doi:10.1016/j.electacta.2007.11.032

Cited by 7 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several studies associated with step edge decoration on HOPG. − In these studies, electrochemical methods were used to grow nanoscale particles and wires. − Xuan et al . reported different bonding energies between edge orientations ( e .…”

mentioning

confidence: 99%

Internal and External Atomic Steps in Graphite Exhibit Dramatically Different Physical and Chemical Properties

Lee

Kwon

et al. 2015

ACS Nano

View full text Add to dashboard Cite

We report on the physical and chemical properties of atomic steps on the surface of highly oriented pyrolytic graphite (HOPG) investigated using atomic force microscopy. Two types of step edges are identified: internal (formed during crystal growth) and external (formed by mechanical cleavage of bulk HOPG). The external steps exhibit higher friction than the internal steps due to the broken bonds of the exposed edge C atoms, while carbon atoms in the internal steps are not exposed. The reactivity of the atomic steps is manifested in a variety of ways, including the preferential attachment of Pt nanoparticles deposited on HOPG when using atomic layer deposition and KOH clusters formed during drop casting from aqueous solutions. These phenomena imply that only external atomic steps can be used for selective electrodeposition for nanoscale electronic devices.

show abstract

mentioning

confidence: 99%

Internal and External Atomic Steps in Graphite Exhibit Dramatically Different Physical and Chemical Properties

Lee

Kwon

et al. 2015

ACS Nano

View full text Add to dashboard Cite

show abstract

“…Besides the long and continuous nanowires, some discrete nanowires were also observed on the HOPG. These were short and discontinuous, and this is possibly due to the Interparticle Diffusion Coupling (IDC) effect [21]. The growth of each deposited nucleus is influenced by the concentration of the ions around it and the position of the crystal grain.…”

Section: Discussionmentioning

confidence: 99%

“…Other nanowire materials such as nickel, copper, silver, gold, zinc, silicon, palladium, cadmium sulfide and bismuth telluride have been synthesized on HOPG by electrodeposition [17][18][19][20]. Besides single metal nanowires, Tang et al [21] and Xiao et. al [22] have successfully fabricated Pd-Ag and Pd-Ni alloy nanowire arrays respectively by using an aqueous plating solution.…”

Section: Introductionmentioning

confidence: 99%

One- and two-dimensional cuprous oxide nano/micro structures fabricated on highly orientated pyrolytic graphite (HOPG) by electrodeposition

Ngan

2013

Electrochimica Acta

View full text Add to dashboard Cite

One-and two-dimensional cuprous oxide (Cu 2 O) nanostructures were fabricated on highly orientated pyrolytic graphite (HOPG) by electrodeposition in CuSO 4 at room temperature (25 o C) with no additives. For short deposition times, 1D Cu 2 O single nanocrystals were generally of an octahedral shape with sizes ranging from 50nm to 400nm, while 2D Cu 2 O nanowires with diameters ranging from 100nm to 300nm had lengths of more than 100μm. With longer deposition times, microwires were found to have diameters ranging from 1μm to 2μm with lengths up to 60μm, while microcrystals were also produced with sizes 1μm to 6μm. The highly aligned Cu 2 O nano/microwires were found to be deposited on the step edges of the HOPG substrate. Various crystal morphologies including flower-like and butterfly-like structures, and dendrites and truncated octahedra were observed on the working electrode of HOPG. Some of the morphologies are revealed for the first time by one step electrodeposition and these are confirmed to be single Cu 2 O crystals.

show abstract

“…600 K to ca. 50 K is observed with the decrease of the thickness of ultrathin Ni films [4,5,6,7,8], while T N in CoO layers is suppressed from 300 K to 15 K [21]. The suppressions of T C and T N have been discussed in terms of scaling laws of the critical temperatures in bulk samples, correlation length and system size (particle diameter and film thickness) [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Finite size effect on Curie temperature T C and Néel temperature T N is one of the unique magnetic properties of the low-dimensional spin systems [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28]. For example, the shift of T C from ca.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Curie temperature and system dimension

Mayama

Naito

2009

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

Curie temperature T C of spin arrangement with arbitrary dimension was considered. We assumed that interaction of a spin with all other spins vary with a power-law decay rate in exchange integral on Heisenberg model. As a result, we found that T C , which was obtained from T C = λC (λ: mean-field coefficient and C: Curie constant), significantly depends on fractal dimension of spin arrangements D, the exchange integral and the decay constant. This semi-quantitavely explains how T C depends on D (1 ≤ D ≤ 3) in a universal way and also the finite size effect on T C in low-dimensional spin systems.

show abstract

Single pulse deposition of Pd–Ag alloy nanowires on highly oriented pyrolytic graphite: A mechanistic assessment

Cited by 7 publications

References 31 publications

Internal and External Atomic Steps in Graphite Exhibit Dramatically Different Physical and Chemical Properties

Internal and External Atomic Steps in Graphite Exhibit Dramatically Different Physical and Chemical Properties

One- and two-dimensional cuprous oxide nano/micro structures fabricated on highly orientated pyrolytic graphite (HOPG) by electrodeposition

Correlation between Curie temperature and system dimension

Contact Info

Product

Resources

About