Welding of Pt nanowires by Joule heating

Tohmyoh, Hironori; Imaizumi, Tsutomu; Hayashi, Hiroyuki; Saka, Masumi

doi:10.1016/j.scriptamat.2007.07.018

Cited by 96 publications

(77 citation statements)

References 15 publications

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“…With the brazed CNT bundles, an incandescent lamp filament can be fabricated with high light emission efficiency due to the much lower contact resistance enabled by active brazing. 23 Fusion nanowelding processes have been attempted with various heat sources, such as laser beam, 5,22 Joule heating 24,25 similar to that used in resistance welding, 1 and even a resistively heated hot stage. 26 The joint is formed by resolidification (fusion) of the molten metal at the faying surfaces produced by Joule heating.…”

mentioning

confidence: 99%

“…This resistance nanowelding approach has also been used to join dissimilar metals, e.g., Pt nanowire to thin Au wire to produce heterojunctions. 24 A hot stage within a SEM has been used to weld two crossed semiconductor Ge nanowires coated with thin layers of carbon sheath. 26 This localized welding is possible due to the porous nature of the carbon sheath, which allows the molten Ge to fuse together and later solidify at the contact point.…”

mentioning

confidence: 99%

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Femtosecond laser welded nanostructures and plasmonic devices

Peng

Alarifi

et al. 2012

Journal of Laser Applications

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Nanojoining, a burgeoning research area, becomes a key manufacturing of complicated nanodevices with functional prefabricated components. In this work, various nanojoining methods are first reviewed. For nanojoining of Ag/Au nanoparticles, three methods are investigated comparatively. Thermal annealing shows a two-step solid state diffusion mechanism. Laser annealing by millisecond pulses displays the thermal activated solid state diffusion. Meanwhile, two effects have been identified in femtosecond laser irradiation with different laser intensities: photofragmentation at rather high intensity (∼1014 W/cm2) and nanojoining at low intensity (∼1010 W/cm2). The photofragmentation forms a large number of tiny nanoparticles with an average size of 10 nm. Control over irradiation conditions at intensities near 1010 W/cm2 results in nanojoining of most of the nanoparticles. This nanojoining is obtained through a nonthermal melting and a surface fusion welding. Joined Au nanoparticles are expected to have numerous applications, such as probes for surface enhance Raman spectroscopy.

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confidence: 99%

mentioning

confidence: 99%

Femtosecond laser welded nanostructures and plasmonic devices

Peng

Alarifi

et al. 2012

Journal of Laser Applications

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“…This effect, renamed the photo-thermal effect in plasmonic nanoparticles, has already found applications in cancer therapy [15,16], optofluidic control [17], nano-welding [18], optical data storage [19], imaging [20] and sensing [21].…”

Section: Introductionmentioning

confidence: 99%

Photo-Thermal Effects in 1D Gratings of Gold Nanoparticles

et al. 2017

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This work investigates the heat delivered by a mono-layer 1D grating of gold nanoparticles (GNPs) created by photo-reduction through two-photon direct laser writing (2P-DLW) in a poly-vinyl alcohol (PVA) matrix doped with HAuCl 4 , under resonant laser radiation. We drop cast a film of a PVA + HAuCl 4 mixture onto a glass substrate, in which we create gratings of 1 mm 2 made by stripes of GNPs characterized by high polydispersivity. We demonstrate that, by controlling the pitch of the GNP stripes, we obtain different values of the photo-induced temperature variations. In the framework of thermo-plasmonics, the experimental investigation of the heat generation from a monolayer of gold nanoparticles represents a key element as a starting point to design thermo-smart platforms for sensing, solar energy harvesting and thermo-catalysis.

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“…There are several methods have been reported, such as joule heating by electric, 1) electron or ion beam welding, 2) cold welding, 3) ultrasonic nanowelding, 4) femtosecond laser induced joining, 5) and soldering. 6) However, methods operated in microscopy greatly limit the industrial application and soldering inquires a strict structure of nanowires.…”

Section: Introductionmentioning

confidence: 99%

Joining of Silver Nanowires by Femtosecond Laser Irradiation Method

2015

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The silver nanowires with diameter around 100 nm and length up to 10 µm were successfully synthesized by a simple polyol method. After the irradiation of fs laser, the silver nanowires melted at special spots because of the surface plasmon effect, which provide possible strategy for nanojoining. Silver nanowires could be joined together at the contact point as a result of the antenna effect with slight deformation. When the gap between two silver nanowires is larger, the self-generated nanoparticles in the middle of silver nanowires performed as medium to form nanojoints.

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Welding of Pt nanowires by Joule heating

Cited by 96 publications

References 15 publications

Femtosecond laser welded nanostructures and plasmonic devices

Femtosecond laser welded nanostructures and plasmonic devices

Photo-Thermal Effects in 1D Gratings of Gold Nanoparticles

Joining of Silver Nanowires by Femtosecond Laser Irradiation Method

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