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相关论文: The Smallest Metallic Nanorods Using Physical Vapo…

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This Letter reports a generalized theory of the smallest diameter of metallic nanorods from physical vapor deposition. The generalization incorporates the effects of nanorod separation and those of van der Waals interactions on geometrical…

材料科学 · 物理学 2017-08-16 Feng Du , Paul R. Elliott , Hanchen Huang

Nanorods grow in two modes through physical vapor deposition (PVD). In mode I, monolayer surface steps dictate the diameter of nanorods. In mode II, multiple-layer surface steps dictate the diameter, which is the smallest possible under…

材料科学 · 物理学 2018-05-09 Feng Du , Hanchen Huang

CdSe-Au networks were synthesized by a colloidal chemistry technique. They entail CdSe nanorods with a diameter of ~10 nm and a length of ~40 nm, which are joined together by Au domains (~5 nm). Individual networks were positioned by AC…

介观与纳米尺度物理 · 物理学 2013-02-27 Peigang Li , Alexandros Lappas , Romain Lavieville , Yang Zhang , Roman Krahne

Noble metal nanoparticles have been utilized for a vast amount of optical applications. For the applications that used metal nanoparticles as nanosensors and optical labeling, larger radiation damping is preferred (higher optical signal).…

光学 · 物理学 2022-03-02 Yanhe Yang , Weihai Ni , Hao Xie , Jian You , Weixiang Ye

We report the first direct observation of ferromagnetic spin polarization of Au nanoparticles with a mean diameter of 1.9 nm using X-ray magnetic circular dichroism (XMCD). Owing to the element selectivity of XMCD, only the gold…

Magnetic nanoparticles (MNP's) have become increasingly important in heating applications such as hyperthermia treatment of cancer due to their ability to release heat when a remote external alternating magnetic field is applied. It has…

介观与纳米尺度物理 · 物理学 2015-06-16 Gowrishankar Seshadri , Rochish Thaokar , Anurag Mehra

We have fabricated pairs of platinum electrodes with separation between 20 and 3.5 nm. Our technique combines electron beam lithography and chemical electrodeposition. We show that the measurement of the conductance between the two…

Currently, gold nanorods can be synthesized in a wide range of sizes. However, for intended biological applications gold nanorods with approximate dimensions 50 nm x 15 nm are used. We investigate by computer simulation the effect of…

医学物理 · 物理学 2015-06-15 Constantin Ungureanu , Gerben A. Koning , Ton G. van Leeuwen , Srirang Manohar

A number of metal-based nanopowders such kinds as Fe, Co, Fe/Co alloy, Fe/C, Fe/organic shell were successfully produced by aerosol synthesis method. The mechanism of nanoparticles formation and the influence of experimental parameters on…

材料科学 · 物理学 2007-08-13 E. S. Vasilieva , O. V. Tolochko , V. E. Yudin , D. Kim , D. -W. Lee

In this article, we report the growth of gold nanorods on glass substrates and copper nanoparticle thin films by cylindrical direct current magnetron sputtering (CDCMS) at room temperature. The grown gold nanorods have short lengths of <…

光学 · 物理学 2018-11-14 Zahra Jalilian , Saeideh Edalati-Boostan , Rostam Moradian

We report on the production of nanodiamonds (NDs) with 70-80 nm size via bead assisted sonic disintegration (BASD) of a polycrystalline chemical vapor deposition (CVD) film. The NDs display high crystalline quality as well as intense…

We detect 39 nm x 10 nm gold nanorods using a microtoroid stabilized via the Pound-Drever-Hall method. Real-time detection is achieved with signal-to-noise ratios up to 12.2. These nanoparticles are a factor of three smaller in volume than…

光学 · 物理学 2015-06-15 Jon D. Swaim , Joachim Knittel , Warwick P. Bowen

Here, we report a process of metallic sealing using small well-separated Ag nanorods; the process is at room temperature under a small mechanical pressure of 9.0 MPa, and also in ambient. The metallic seals have an air leak rate of 1.1 x…

介观与纳米尺度物理 · 物理学 2013-08-05 Stephen P. Stagon , Hanchen Huang

A uniform array of single-grain Au nanodots, as small as 5-8 nm, can be formed on silicon using e-beam lithography. The as-fabricated nanodots are amorphous, and thermal annealing converts them to pure Au single crystals covered with a thin…

介观与纳米尺度物理 · 物理学 2011-09-16 N. Clement , G. Patriarche , K. Smaali , F. Vaurette , K. Nishiguchi , D. Troadec , A. Fujiwara , D. Vuillaume

Contacting metallic single-walled carbon nanotubes by palladium (Pd) affords highly reproducible ohmic contacts and allows for detailed elucidation of ballistic transport in metallic nanotubes. The Pd ohmic contacts are more reliable than…

凝聚态物理 · 物理学 2015-06-24 David Mann , Ali Javey , Jing Kong , Qian Wang , Hongjie Dai

Nanoporous gold is widely used in research and nanotechnology because of its diverse properties, including high surface area and catalytic activity. The ligament size is usually considered as the only parameter controlling thermal stability…

材料科学 · 物理学 2020-01-13 Maria Koifman Khristosov , Shiri Dishon , Imrit Noi , Alex Katsman , Boaz Pokroy

In this letter we discuss a novel and versatile template technique aimed to the fabrication of sub-10 nm wide wires. Using this technique, we have successfully measured AuPd wires, 12 nm wide and as long as 20 $\mu$m. Even materials that…

介观与纳米尺度物理 · 物理学 2009-11-10 Fabio Altomare , Albert M. Chang , Michael R. Melloch , Yuguang Hong , Charles W. Tu

This work reports aspect related to semi-conducting nature of nano-sized particles of lead. This attempt finds its semiconducting behaviors elaborately and such advanced insight has so far not been said in literatures. New findings of Pb…

综合物理 · 物理学 2014-02-05 T. Theivasanthi , M. Alagar

The polarization behavior of metallic nano-rods has been analyzed by means of the finite-difference-time-domain method. When the average spacing between the nano-rods is less than a half wavelength, the layer reflects the light polarized…

光学 · 物理学 2013-06-25 Young-Gu Ju

Understanding nanomechanical response of materials represents a scientific challenge. Here, we have used in-situ electron microscopy to reveal drastic for the first time changes of structural behavior during deformation of 1-nm-wide metal…

材料科学 · 物理学 2009-10-22 Maureen J. Lagos , Fernando Sato , Douglas S. Galvao , Daniel Ugarte
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