Copper nanoparticles fabricated by laser ablation in polysiloxane

Saito, Mitsunori; Yasukawa, Katsumasa; Umeda, T.; Aoi, Yoshifumi

doi:10.1016/j.optmat.2007.05.049

Cited by 52 publications

(27 citation statements)

References 17 publications

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“…6, which account for increase of nanoparticles concentration. Synthesis of more nanoparticles in higher ablation times was previously reported for other elemental nanoparticles in both gas and liquid environment 14,[18][19][20] .…”

Section: Effect Of Ablation Timesupporting

confidence: 58%

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EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

Baladi

Sarraf-Mamoory

2012

Int. J. Mod. Phys. Conf. Ser.

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Aluminum nanoparticles were synthesized by pulsed laser ablation of Al targets in ethanol for 5-15 minutes using the 1064 and 533 nm wavelengths of a Nd:YAG laser with energies of 280-320 mJ per pulse. It has been found that higher wavelength leads to significantly higher ablation efficiency, and finer spherical nanoparticles are also synthesized. Besides, it was obvious that higher ablation time resulted in higher ablated mass, while lower ablation rate was observed. Finer nanoparticles, moreover, are synthesized in higher ablation times.

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Section: Effect Of Ablation Timesupporting

confidence: 58%

“…Besides, it is anticipated that increase of the ablation time results in higher ablated mass 14,[18][19][20] and finer synthesized nanoparticles with narrower size distribution 18,21 . In long ablation times, however, the ablation rate decreases.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

Baladi

Sarraf-Mamoory

2012

Int. J. Mod. Phys. Conf. Ser.

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“…Laser ablation in a liquid phase is advantageous to prevent samples from exposure to air, since oxidation usually becomes a problem in micro-or nano-fabrication processes. 32 Actually, in our experiment, a longer immersion time was needed to form polygonal pits when a Si plate was preserved in air for several hours after ablation. The etchant-immersion of Si elements, however, seems difficult to achieve in the ordinary device fabrication process (dry process).…”

Section: Discussionmentioning

confidence: 69%

“…Laser irradiation in oil or surfactant solutions either prevents surface oxidation or facilitates creation and collection of nanoparticles. [30][31][32] Laser-induced plasma reactions in a liquid phase are also useful to create nano-sized compounds. 33,34 In this study, we conduct laser-assisted chemical etching of Si plates by using an aqueous solution of potassium hydroxide (KOH).…”

Section: Introductionmentioning

confidence: 99%

Polygonal pits on silicon surfaces that are created by laser-assisted chemical etching

Saito

Kimura

2017

AIP Advances

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Laser-assisted chemical etching was conducted for creating periodic textures on silicon surfaces. Silicon plates with the (111) surface orientation were immersed in an aqueous solution of potassium hydroxide, and a pulsed laser beam (532 nm wavelength, 5 ns duration, 10 pulse/s) was irradiated on their surface to promote anisotropic etching. The laser beam was patterned by using a glass capillary plate that contained a hexagonal array of micropores (10μm diameter, 12μm period). The focused beam projected the hexagonal image on the silicon surface, creating bright spots of 4μm period. During the laser irradiation process of 3 min, both laser-induced ablation and chemical etching took place at these bright spots. After stop of laser irradiation, the chemical etching progressed further, and consequently, a periodic array of triangular or hexagonal pits emerged on the silicon surface. The direction of the triangular pits changed by rotation of the silicon plate. When a silicon plate with the (100) surface orientation was used, diamond or rectangular pits were created on its surface. The mechanism of this polygonal texturing was explained by using the normal and intersecting vectors of the (100), (110), and (111) planes that exhibited different etching rates.

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“…To produce NPs, different physical methods and combination techniques have been reported to date. Specific advantages of laser ablation technique (LAT) are its simplicity and versatility [8,9], well controlled exposure time [9], and the creation of pure NPs from colloidal dispersions with no formation of by-products [10]. On the other hand, colloids produced by chemical methods are usually contaminated with residual by-products such as ions and reducing agents, which is especially critical in biological applications [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Au-Cu Nano-Alloy from Monometallic Colloids by Simultaneous Pulsed Laser Targeting and Stirring

2011

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Abstract:Experimental work has been focused on the formation of alloyed Au-Cu nanoparticles under simultaneous laser exposure and mechanical stirring of mixed monometallic colloids, here referred to as dual procedure. As a feed for the dual procedure, Au and Cu monometallic nanoparticle colloids have been using a laser ablation technique. To accomplish this, bulk targets were ablated with 1064 nm wavelength Nd: YAG laser in a pure acetone (99.99%) environment. Ultraviolet-visible optical absorption spectrometry, transmission electron microscopy, X-ray diffraction and X-ray fluorescence technique have been used to characterize the nanoparticles. It has been found that experimental conditions such as stirring and laser parameters strongly affect the synthesized particle properties, including the size, shape, composition and stability of the nanoparticles. Alloy nanoparticles containing 39% Au -61% Cu have also been prepared in the same process, but in two forms of a homogeneous alloy and a core-shell structure.

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Copper nanoparticles fabricated by laser ablation in polysiloxane

Cited by 52 publications

References 17 publications

EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

Polygonal pits on silicon surfaces that are created by laser-assisted chemical etching

Synthesis of Au-Cu Nano-Alloy from Monometallic Colloids by Simultaneous Pulsed Laser Targeting and Stirring

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