New technique of amorphous metal nanoparticles production by liquid drop breakup in an electron beam

2012 ◽  
Vol 209 (6) ◽  
pp. 1036-1041 ◽  
Author(s):  
Maxim Gorokhov ◽  
Denis Yavsin ◽  
Vladimir Kozhevin
Keyword(s):  
Electron Beam ◽  
Metal Nanoparticles ◽  
Liquid Drop ◽  
Amorphous Metal ◽  
New Technique ◽  
Drop Breakup

Tunable Metallization by Assembly of Metal Nanoparticles in Polymer Thin Films by Photo- or Electron Beam Lithography

Langmuir ◽  
2005 ◽  
Vol 21 (20) ◽  
pp. 9352-9358 ◽  
Author(s):  
Dehui Yin ◽  
Shin Horiuchi ◽  
Masamichi Morita ◽  
Atsushi Takahara
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Metal Nanoparticles ◽  
Electron Beam Lithography ◽  
Polymer Thin Films

Vapor deposition of metal-doped polyaniline coatings, their molecular structure

2021 ◽  
Author(s):  
А. М. Mikhalko ◽  
A.A. Rogachev ◽  
M.A. Yarmolenko ◽  
Xuhui Jin ◽  
Hongliang Zhang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Electron Beam ◽  
Metal Nanoparticles ◽  
Silver Chloride ◽  
Molecular Organization ◽  
Noble Metal Nanoparticles ◽  
Covalent Interaction ◽  
Study Results ◽  
Wide Range ◽  
Volatile Products

Doping of polyaniline (PANI) coatings by metal nanoparticles is a highly effective method for increasing their electrically conductive (EC), photovoltaic, and catalytic properties. In this case, the particular interest is the formation of metal-filled polyaniline coatings during their synthesis by the vacuum method. The growth of the polymer chain and the processes of structure formation proceed simultaneously and it becomes possible to vary the degree of doping, protonation, and ordering of the formed thin-film systems in a wide range. The purpose of the development is to determine the peculiarities of the formation of electron-beam dispersion from volatile products, the molecular structure of polyaniline-based layers containing noble metal nanoparticles, and to establish the effect of dopants on the molecular organization of the formed layers. The features of deposition from volatile products of electron-beam dispersion of nanocomposite polyaniline-based coatings and metal nanoparticles (silver, gold) are determined. The features of the molecular structure of the layers and the influence and its change upon the introduction of dopants by the methods of Raman and IR Fourier spectroscopy have been established. It is shown that the coatings have a conformational state of macromolecules in the form of flat extended chains, and a more oxidized structure of polyaniline layers is observed when silver chloride is used. It is shown that the features of the molecular structure of the formed polymer matrix based on polyaniline are due to the manifestation of a specific non-covalent interaction of macromolecules with metal nanoparticles. Analysis of the study results indicates the deposition possibility from the gas phase of nanocomposite conducting coatings based on polyaniline, which are a system of protonated conducting polymer chains and metal clusters. Such coatings are promising elements of sensor devices for various purposes; they can be used, in particular, in the creation of electrochromic devices.

scholarly journals Precipitation of Pt Nanoparticles inside Ion-Track-Etched Capillaries

2020 ◽  
Vol 4 (1) ◽  
pp. 8 ◽  
Author(s):  
Shunya Yamamoto ◽  
Hiroshi Koshikawa ◽  
Tomitsugu Taguchi ◽  
Tetsuya Yamaki
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Electron Beam ◽  
Metal Nanoparticles ◽  
Precious Metal ◽  
Precious Metals ◽  
Pt Nanoparticles ◽  
Polyimide Film ◽  
Sodium Hypochlorite Solution ◽  
Transmission Electron

Ion-track-etched capillaries containing nanoparticles of precious metals (e.g., Pt, Au, and Ag) can be applied to plasmonic absorber materials. The precipitation of homogeneous and highly dispersed precious metal nanoparticles inside capillaries represents a key process. Ion-track-etched capillaries (diameter: ~500 nm, length: ~25 μm) were created in polyimide film by 350 MeV Xe irradiation (3 × 107 ions/cm2) and chemical etching (using a sodium hypochlorite solution). The films with capillaries were immersed in an aqueous solution containing 0.1–10 mmol/L H2PtCl6 and 0.5 vol% C2H5OH, and then irradiated with a 2 MeV electron beam up to a fluence of 1.4 × 1016 e/cm2. The Pt particles inside the capillaries were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The precipitation of Pt nanoparticles and isolated aggregates inside the capillaries was confirmed by TEM. The Pt nanoparticles tended to aggregate under increasing concentrations of H2PtCl6 in the aqueous solution; meanwhile, no changes in nanoparticle size were noted under increasing electron beam fluence. The results suggest that the proposed method can be used to form metal nanoparticles in nanosized capillaries with a high aspect ratio.

Behavior of metal nanoparticles in the electron beam

Micron ◽  
2002 ◽  
Vol 33 (5) ◽  
pp. 441-446 ◽  
Author(s):  
Miyoko Tanaka ◽  
Masaki Takeguchi ◽  
Kazuo Furuya
Keyword(s):  
Electron Beam ◽  
Metal Nanoparticles

Shattering of a liquid drop due to impact

1991 ◽  
Vol 435 (1895) ◽  
pp. 483-503 ◽  
Keyword(s):  
Surface Energy ◽  
Statistical Model ◽  
Surface Area ◽  
Liquid Drop ◽  
Drop Impact ◽  
Drop Breakup ◽  
Viscous Effects ◽  
Consistent Manner

Based on energy and entropy principles, a statistical model describing the shattered state of a single spherical liquid drop after being subjected to a relatively sudden but uniform (over the whole surface area of the drop) impact is developed. The problem is addressed from a fundamental standpoint, with the intention of providing a predictive framework for the various modes of breakup and the size and number of droplets produced. Upon neglecting viscous effects, several results in terms of the energy of impact, non-dimensionalized with respect to the surface energy of the drop before impact, are derived. The model is quite simple and straightforward, yet it appears to predict in a fairly consistent manner certain experimental observations that have been made repeatedly in relation to drop breakup in stirred dispersions, by collision, and exposure to shocks.

Patterning of Polymer Nanocomposite Resists Containing Metal Nanoparticles by Electron Beam Lithography

2011 ◽  
Vol 11 (8) ◽  
pp. 7390-7393 ◽  
Author(s):  
Byoung-Min Lee ◽  
Dong-Woo Kang ◽  
Chan-Hee Jung ◽  
Jae-Hak Choi ◽  
In-Tae Hwang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Metal Nanoparticles ◽  
Electron Beam Lithography ◽  
Polymer Nanocomposite

Electron-beam induced in situ growth of self-supported metal nanoparticles in ion-containing polydopamine

2019 ◽  
Vol 252 ◽  
pp. 277-281 ◽  
Author(s):  
Haoqi Li ◽  
Yao Zhao ◽  
Zhuolei Zhang ◽  
Gangadhar Andaluri ◽  
Fei Ren
Keyword(s):  
Electron Beam ◽  
Metal Nanoparticles ◽  
In Situ Growth ◽  
Supported Metal Nanoparticles ◽  
Supported Metal
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