Theoretical study of heating of spherical nanoparticle in media by short laser pulses

Pustovalov, V. K.

doi:10.1016/j.chemphys.2004.08.005

Cited by 143 publications

(143 citation statements)

References 13 publications

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“…3 along with the temperature envelope and the temperature profile of the steady state (cw illumination) given by Eq. (17). As derived in the previous section, when considering a point-like (R → 0) source of heat, the envelope of the temperature profile follows a 1/r 3 profile outside the NP.…”

Section: E Subsequent Evolution Of the Temperature Profilementioning

confidence: 92%

“…16 Several experimental and numerical approaches aimed at studying the internal processes of heat generation under pulsed illumination and the subsequent effects observed in the surrounding medium, e.g. temperature and pressure variations, [17][18][19] acoustic wave generation, 18 vibration modes, [20][21][22] , cell apoptosis, 11 drug release 9,23 nanosurgery, 15,24 bubble formation, [25][26][27][28] NP shape modification 29 and melting, [29][30][31] nanosecondpulses for biomedical applications, 32,33 extreme thermodynamics conditions. [33][34][35][36][37] In this paper, we present and use a versatile numerical framework to investigate theoretically and numerically the evolution of the temperature distribution of a gold nanoparticle immersed in water when shined by a femtosecond-pulsed laser.…”

Section: 10mentioning

confidence: 99%

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Femtosecond-pulsed optical heating of gold nanoparticles

2011

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We investigate theoretically and numerically the thermodynamics of gold nanoparticles immersed in water and illuminated by a femtosecond-pulsed laser at their plasmonic resonance. The spatiotemporal evolution of the temperature profile inside and outside is computed using a numerical framework based on a Runge-Kutta algorithm of the fourth order. The aim is to provide a comprehensive description of the physics of heat release of plasmonic nanoparticles under pulsed illumination, along with a simple and powerful numerical algorithm. In particular, we investigate the amplitude of the initial instantaneous temperature increase, the physical differences between pulsed and cw illuminations, the time scales governing the heat release into the surroundings, the spatial extension of the temperature distribution in the surrounding medium, the influence of a finite thermal conductivity of the gold/water interface, the influence of the pulse repetition rate of the laser, the validity of the uniform temperature approximation in the metal nanoparticle, and the optimum nanoparticle size (around 40nm) to achieve maximum temperature increase.

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Section: E Subsequent Evolution Of the Temperature Profilementioning

confidence: 92%

Section: 10mentioning

confidence: 99%

Femtosecond-pulsed optical heating of gold nanoparticles

2011

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“…5 exhibits more than twice as much enhancement of X-ray emission from Au-np PVA targets while compared to Au-mp PVA targets. Modeling of the interaction of an intense laser field with a dielectric containing metallic nano-particles has been done by several authors [5]. This was done to study laser damage in laser glasses containing nano-scale metal inclusions.…”

Section: Resultsmentioning

confidence: 99%

Particle size effect on velocity of gold particle embedded laser driven plastic targets

Dhareshwar

Chaurasia

Manmohan

et al. 2013

EPJ Web of Conferences

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Abstract.A scheme to enhance the target foil velocity has been investigated for a direct drive inertial fusion target. Polymer PVA (polyvinyl alcohol or (C 2 H 4 O) n ) target foils of thickness 15-20 m were used in plain form and also embedded with gold in the nano-particle (Au-np) or micro-particle (Au-mp) form. Nanoparticles were of 20-50 nm and micro-particles of 2-3 m in size. 17% higher target velocity was measured for foils embedded with nano-particle gold (Au-np) as compared to targets embedded with micro-particles gold (Au-mp). The weight of gold in both cases was in the range 40-55% of the full target weight (atomic percentage of about 22%). Experiments were performed with the single beam of the Prague Asterix Laser System (PALS) at 0.43 m wavelength (3 of the fundamental wavelength), 120 Joule energy and 300 psec pulse duration. Laser intensity on the target was about 10 15 W/cm 2 . A simple model has been proposed to explain the experimental results.

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“…Hyperthermia arises from a number of mechanisms, including cavitation effects caused by microbubble formation, disruption of cell membranes and denaturation of proteins [198][199][200]. This process is a highly localized phenomenon and confined to only those regions specifically targeted by bioconjugated metal NPs [201][202][203].…”

Section: Photothermal Ablation (Pta) Therapymentioning

confidence: 99%

Controllable Cobalt Oxide/Au Hierarchically Nanostructured Electrode for Nonenzymatic Glucose Sensing

2016

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By electrodeposition and galvanic replacement reaction, we developed a facile, time-saving, cost-effective, and environmentally friendly, two-step synthesis route to obtain a controllable cobalt oxide/Au hierarchically nanostructured electrode for glucose sensing. The nanomaterials were characterized by transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy, meanwhile, the sensing performance was investigated by cyclic voltammetry and amperometric response. The results revealed that this novel electrode exhibited excellent electrocatalytic performance toward glucose oxidation, with a wide double-linear range from 0.2 μM to 20 mM and a low detection limit of 0.1 μM based on a signal-to-noise ratio of 3, which was mainly attributed to the ability of loading a small amount of Au with good electron conductivity on the surface of cobalt oxide nanosheets with large active surface area and synergistic electrocatalytic activity of Au and cobalt oxide toward glucose electrooxidation. This facile, sensitive, and selective glucose sensor is also proven to be suitable for the detection of glucose in human serum.

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Theoretical study of heating of spherical nanoparticle in media by short laser pulses

Cited by 143 publications

References 13 publications

Femtosecond-pulsed optical heating of gold nanoparticles

Femtosecond-pulsed optical heating of gold nanoparticles

Particle size effect on velocity of gold particle embedded laser driven plastic targets

Controllable Cobalt Oxide/Au Hierarchically Nanostructured Electrode for Nonenzymatic Glucose Sensing

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