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nanoparticles
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Image
Published: 31 December 2017
Fig. 9 (a) Wear and friction of activated polymer pins with nanoparticles against 100Cr6 disks. (b) Autoradiography of the disks showing material transfer. COF, coefficient of friction. Source: Ref 40
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in Transition Metal Dichalcogenide-Based (MoS2, WS2) Coatings
> Friction, Lubrication, and Wear Technology
Published: 31 December 2017
Fig. 19 The three main friction mechanisms of inorganic fullerene nanoparticles discussed in the literature: (a) rolling, (b) sliding, and (c) exfoliation. The bottom surface is stationary, while the upper surface is moving to the left. The circular mark on the nanoparticle is a point
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Published: 15 December 2019
Fig. 5 Scanning electron microscope images of gold nanoparticles obtained before astigmatism correction. (a) At focus. (b) Underfocus. (c) Overfocus. (d) At focus after astigmatism correction. Inset depicts electron beam spot size relative to pixel size.
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Published: 15 December 2019
Fig. 10 (a) Illustration of electron beam scanning across gold nanoparticles. SE, secondary electron. (b) Scanning electron micrograph of gold particles. (c) Secondary electron signal intensity, S, as a function of pixel position from line scan denoted in (b)
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Published: 15 December 2019
Fig. 11 Five scanning electron micrographs of gold nanoparticles recorded at various brightness and contrast settings, with superimposed waveform (yellow plot). (a) Excessive brightness leads to loss of information. (b) Excessive contrast results in saturation for both 255 and 0 grayscale
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Published: 15 May 2022
Fig. 10 The effect of nanoparticles on the contact mode for the short fiber–reinforced polymer composites (for better illustration purposes: fibers size is too small, and nanoparticles are too large with respect to surface roughness)
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Published: 30 September 2015
Fig. 3 Conversion of a single 1 mm particle into 10 18 nanoparticles, resulting in a millionfold increase in surface area
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Published: 15 December 2019
Fig. 44 Scanning electron micrographs of gold and TiO 2 nanoparticles on a lacey carbon substrate acquired at (a) low-angle and (b) high-angle transmission modes using a commercial solid-state detector, and (c) a conventional secondary electron image. Reprinted from Ref 9 with permission
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Published: 15 December 2019
Fig. 21 (a) Image of a sample of quantum dots (nanoparticles). (b) Line profiles show three different particle sizes.
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Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005913
EISBN: 978-1-62708-167-2
... Abstract Hyperthermia is a type of cancer treatment that requires directing a carefully controlled dose of heated nanoparticles to the cancerous tumor that leads to the destruction of cancer cells. Nanoparticles are used as the heat generating sources within the cancer cells and the tumors...
Abstract
Hyperthermia is a type of cancer treatment that requires directing a carefully controlled dose of heated nanoparticles to the cancerous tumor that leads to the destruction of cancer cells. Nanoparticles are used as the heat generating sources within the cancer cells and the tumors. The problem in controlling the temperature of nanoparticles is solved by the use of induction heating, which uses a high-frequency alternating magnetic field localized in the area of interest. This article provides an overview of this technique along with the description of its major components, namely, nanoparticles, induction heating setup, and magnetic field strength.
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Published: 15 December 2019
Fig. 12 Scanning electron micrographs of a single gold nanoparticle recorded at 3, 10, and 30 μs dwell times. Longer dwell times enable more signal collection for each pixel position, producing images with less noise. Signal intensity plots correspond to the horizontal row of 72 pixels denoted
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Image
Published: 30 September 2015
Fig. 1 Particle geometries of nanomaterials. (a) Nanosphere or nanoparticle. (b) Nanorod, nanowire, or nanotube. (c) Nanoplate or nanofilm. (d) Nanopore
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Image
Published: 01 February 2024
Fig. 9 Variation of the maximum cooling rates with TiO 2 nanoparticle concentration for (a) deionized water and (b) water/PAG solution. Source: Ref 37
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Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0007005
EISBN: 978-1-62708-450-5
... the mechanism of heat transfer in nanofluids and discusses the effect of the deposition of nanoparticles on the probe surface. The article also presents the microstructure and mechanical properties of steel quenched in nanofluids. heat transfer mechanical properties microstructure nanofluids...
Abstract
This article details investigations on the characterization of various nanofluids as quenchants for industrial heat treatment. It provides a discussion on the preparation, stability, thermophysical properties, and wetting characteristics of nanofluids. The article explains the mechanism of heat transfer in nanofluids and discusses the effect of the deposition of nanoparticles on the probe surface. The article also presents the microstructure and mechanical properties of steel quenched in nanofluids.
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005933
EISBN: 978-1-62708-166-5
... the effect of nanoparticle addition on the microstructure, mechanical properties of components, wetting kinetics, and kinematics. heat treatment mechanical properties microstructure nanofluid quenchants quench hardening thermophysical properties QUENCH HARDENING is a heat treatment process...
Abstract
Nanofluids offer a completely different behavior of wetting kinetics and heat-removal characteristics, which are exploited in industrial heat treatment for quenching. This article provides information on the important thermophysical properties of nanofluids, namely, thermal conductivity, viscosity, specific heat, density, and surface tension. It reviews wetting and boiling heat-transfer characteristics of nanofluids as quenchants and highlights the importance of using nanofluids as effective quench media for the hardening process during heat treatment. The article describes the effect of nanoparticle addition on the microstructure, mechanical properties of components, wetting kinetics, and kinematics.
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006012
EISBN: 978-1-62708-172-6
... nm, and atoms have dimensions on the order of 0.1 to 0.3 nm ( Ref 1 ). Nanotechnology applications within the coatings industry today (2015) include: The use of extremely small nanoparticles of matter as raw materials in coatings The development, in situ, of extremely fine nanostructures...
Abstract
Nanotechnology and smart-coating technologies have been reported to show great promise for improved performance in critical areas such as corrosion resistance, durability, and conductivity. This article exemplifies nanofilms and nanomaterials used in coatings applications, including carbon nanotubes, silica, metals/metal oxides, ceramics, clays, buckyballs, graphene, polymers, titanium dioxide, and waxes. These can be produced by a variety of methods, including chemical vapor deposition, plasma arcing, electrodeposition, sol-gel synthesis, and ball milling. The application of nanotechnology and the development of smart coatings have been dependent largely on the availability of analytical and imaging techniques such as Raman spectroscopy, scanning and transmission electron microscopy, atomic force microscopy, and scanning tunneling microscopy.
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in Transition Metal Dichalcogenide-Based (MoS2, WS2) Coatings
> Friction, Lubrication, and Wear Technology
Published: 31 December 2017
Fig. 20 Friction coefficient (μ) as a function of wear rate plots from reciprocating ball-on-flat sliding tests in polyalphaolefin for different additive combinations (inorganic fullerene, or IF, WS 2 nanoparticle; normal 2H WS 2 particles; zinc-dithiophosphate, or Zn-DTP, antiwear additive
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Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006377
EISBN: 978-1-62708-192-4
... forms of TMD lubrication, namely, oils, greases, microparticle and nanoparticle additives. coating crystal structure friction greases intrinsic solid lubricants microparticle additives nanoparticle additives oils solid lubrication torque transition metal dichalcogenides TRANSITION...
Abstract
Transition metal dichalcogenides (TMD) are solid lubricant materials, specifically, intrinsic solid lubricants, whose crystal structure facilitates interfacial sliding/shear to achieve low friction and wear in sliding contacts and low torque in rolling contacts. This article provides information on sliding friction and wear behavior of unbonded, bonded, and vapor-deposited pure and composite MoS 2 and WS 2 coatings. It discusses the rolling-torque behavior and applications of vapor-deposited pure and composite MoS 2 and WS 2 coatings. The article concludes with information on various forms of TMD lubrication, namely, oils, greases, microparticle and nanoparticle additives.
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Published: 12 September 2022
Fig. 10 Schematic of the machine learning–assisted FINP‐IμC biochip. FINP, flexible inkjet-nanoparticle-printed; ML, machine learning. Source: Ref 24 . Reprinted with permission from Wiley
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Published: 01 December 2004
Fig. 49 The use of co-occurrence statistics in texture analysis. (a) HRTEM image of an amorphous resin. (b) HRTEM image of the same resin with diluted nanoparticles of carbon. (c) and (d) The histograms for uniformity and entropy for the two images. Courtesy Dr. Alain Thorel, ENSMP
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