Thermomechanical action of ultrashort laser pulses on metallic nanostructures

Сентябрь 15, 2022

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Thermomechanical action of ultrashort laser pulses on metallic nanostructures

Содержание

2. Damping oscillations: M. Perner, S. Gresillon, J. März, G. von Plessen, J. Feldmann // Phys. Rev.
3. Laser-induced explosion of gold nanoparticles: potential role for nanophotothermolysis of cancer R. Letfullin, Ch. Joenathan, Th.
4. Cavitation phenomena around nanoparticles Gold nanoparticle targeted photoacoustic cavitation for potential deep tissue imaging and therapy
5. Excitation of acoustic vibrations in nonspherical metallic nanoparticles Damping of acoustic vibrations in gold nanoparticles. Matthew
6. Photothermal Cancer Therapy and Imaging Based on Gold Nanorods WON IL CHOI, ABHISHEK SAHU, YOUNG HA
7. Excitation of shock waves under absorption of laser radiation in metallic films Ultrashort strain solitons in
8. Hypersonic Modulation of Light in Three-Dimensional Photonic and Phononic Band-Gap Materials A. V. Akimov, Y. Tanaka,
9. Main stages of thermooptical excitation of acoustic pulse: -absorption of laser pulse energy; local heating; local
10. The Lagrange equations for the one-dimensional motion of a continuous medium have the following form [1]:
11. Peculiarities of the problem: - size of metallic structures (10-100 nm); - pulse duration (100 fs).
12. - particle size (10-100nm); - pulse duration (100fs); Fast dynamics in small area 12
13. heat source function electron-phonon relaxation The heating of metals with ultra short laser pulses is described
14. Mie–Grünheisen state equation for metallic nanoparticle: Mie–Grünheisen state equation for environment: 14
15. Lagrange equations [2]: Artificial viscosity [2] R.D. Richtmayer, and K.W. Morton, Difference Methods for Initial Value
16. Heat transfer equation [3]: [3] V.K. Saul’ev, Parabolic Equations Integration by Grid Method, 1960 (in Russian).
17. Plane geometry α=1 Space distributions of temperature (а), velocity (b) and pressure (c, d) in different
18. Cylindrical geometry α=2 a Space distributions of temperature (а), velocity (b) and pressure (c, d) in
19. Time dependences of temperature in the centre of gold nanoparticle Spherical geometry: gold nanoparticle in water
20. Сферическая геометрия α=3 Space distributions of temperature (а), velocity (b) and pressure (c, d) in different
21. Oscillations of nanoparticle Spherical geometry: gold nanoparticle in water 21
22. Pressure oscillations outside the particle (r =1nm from surface). Spherical geometry: gold nanoparticle in water tp=10-13s,
23. Gold nanoparticles in water (excitation by series of short pulses) Resonance enhancement of the oscillation amplitude
24. Pressure oscillations outside the particle (r =1nm from surface). 1 - single pulse; 2 – series
26. Скачать презентацию

Слайд 2

Damping oscillations:
M. Perner, S. Gresillon, J. März, G. von Plessen, J. Feldmann // Phys. Rev. Lett.

2000. V.85. P.792.

pump – probe spectroscopy

Excitation of acoustic vibrations in spherical metallic nanoparticles

Слайд 3

Laser-induced explosion of gold nanoparticles: potential role for nanophotothermolysis of

cancer

R. Letfullin, Ch. Joenathan, Th. George, V. Zharov // Nanomedicine, 2006, V.1. P.473.

Слайд 4

Cavitation phenomena around nanoparticles
Gold nanoparticle targeted photoacoustic cavitation for

potential deep tissue imaging and therapy / Hengyi Ju, Ronald A. Roy, and Todd W. Murray // BIOMEDICAL OPTICS EXPRESS 2013 / Vol. 4, No. 1 P. 66

(a) Acoustic signals from a photoacoustic cavitation event and a non-event around gold nanospheres (2.2 × 108 nanoparticles/ml) at a peak negative HIFU pressure of 1.5 MPa and a laser fluence of 4.8 mJ/cm2. (b) Cavitation probability as a function of laser fluence around gold nanospheres (2.2 × 108 nanoparticles/ml) at peak negative pressures of 1.5, 2.0, 2.5 and 3.0 MPa.

Слайд 5

Excitation of acoustic vibrations in nonspherical metallic nanoparticles
Damping of acoustic

vibrations in gold
nanoparticles. Matthew Pelton, John E. Sader, Julien Burgin, Mingzhao Liu, Philippe Guyot-Sionnest and David Gosztola // NATURE NANOTECHNOLOGY VOL 4 2009 P.492

Слайд 6

Photothermal Cancer Therapy and Imaging Based on Gold Nanorods
WON IL

CHOI, ABHISHEK SAHU, YOUNG HA KIM, and GIYOONG TAE // Annals of Biomedical Engineering (2011)
DOI: 10.1007/s10439-011-0388-0

Excitation of acoustic vibrations in nonspherical metallic nanoparticles

Слайд 7

Excitation of shock waves under absorption
of laser radiation in

metallic films

Ultrashort strain solitons in sapphire and ruby / Otto Muskens et.al.

Слайд 8

Hypersonic Modulation of Light in Three-Dimensional Photonic and Phononic Band-Gap

Materials

A. V. Akimov, Y. Tanaka, A. B. Pevtsov, S. F. Kaplan, V. G. Golubev, S. Tamura, D. R. Yakovlev, and M. Bayer // Phys. Rev. Lett. 101, 033902

Слайд 9

Main stages of thermooptical excitation of acoustic pulse:
-absorption of laser

pulse energy;
local heating;
local pressure increasing;
expansion due to gradient of pressure;
formation of acoustic pulse;
relaxation process.

Слайд 10

The Lagrange equations for the one-dimensional motion of a continuous medium

have the following form [1]:

– continuity equation

– motion equation

– equation of the changing of Euler coordinate R

– Mie–Grünheisen state equation

P (r,t),
u (r,t),
(r,t)
T (r,t)

α=1 – plane
α=2 – cylindrical
α=3 – spherical geometry

– heat transfer equation

[1] O.G. Romanov, G.I. Zheltov, G.S. Romanov. Numerical modeling of thermomechanical processes in absorption of laser radiation in spatially inhomogeneous media // Journal of Engineering Physics and Thermophysics, 2011. Vol. 84, No. 4, P.772-780.

Слайд 11

Peculiarities of the problem:
- size of metallic structures (10-100 nm);
-

pulse duration (100 fs).

Scheme of radiation–medium interaction in the plane (a), cylindrical (b), and spherical (c) geometries.

Слайд 12

- particle size (10-100nm);
- pulse duration (100fs);
Fast dynamics in small

area

Слайд 13

heat source function
electron-phonon relaxation
The heating of metals with ultra short

laser pulses is described by a two-temperature model for an electron gas and an ionic lattice:

S.I.Anisimov, Ya.A. Imas, G.S. Romanov, and Yu.V. Khodyko.
The Effect of High Power Radiation onto Metals, 1970 (in Russian).

Слайд 14

Mie–Grünheisen state equation for metallic nanoparticle:
Mie–Grünheisen state equation for environment:
14

Слайд 15

Lagrange equations [2]:
Artificial viscosity
[2] R.D. Richtmayer, and K.W. Morton, Difference Methods

for Initial Value Problems, 1967.

Слайд 16

Heat transfer equation [3]:
[3] V.K. Saul’ev, Parabolic Equations Integration by Grid

Method, 1960
(in Russian).

Слайд 17

Plane geometry
α=1
Space distributions of temperature (а), velocity (b) and pressure

(c, d) in different time moments.
1 – 100 fs, 2 – 500 fs, 3 – 1 ps, 4 – 2 ps, 5 – 3 ps, 6 – 4 ps, 7 – 5 ps

Слайд 18

Cylindrical geometry
α=2
a
Space distributions of temperature (а), velocity (b) and pressure (c, d)

in different time moments.
1 – 100 fs, 2 – 500 fs, 3 – 1 ps, 4 – 2 ps, 5 – 3 ps, 6 – 4 ps, 7 – 5 ps

Слайд 19

Time dependences of temperature in the centre of gold nanoparticle
Spherical geometry:

gold nanoparticle in water

Слайд 20

Сферическая геометрия
α=3
Space distributions of temperature (а), velocity (b) and pressure

(c, d) in different time moments.
1 – 100 fs, 2 – 500 fs, 3 – 1 ps, 4 – 2 ps, 5 – 3 ps, 6 – 4 ps, 7 – 5 ps

Слайд 21

Oscillations of nanoparticle
Spherical geometry: gold nanoparticle in water
21

Слайд 22

Pressure oscillations outside the particle (r =1nm from surface).
Spherical geometry: gold

nanoparticle in water

tp=10-13s, I0=1010 W/cm2

tp=10-11s, I0=108 W/cm2

Слайд 23

Gold nanoparticles in water
(excitation by series of short pulses)
Resonance enhancement

of the oscillation amplitude

Oscillations of nanoparticle (а) and temperature in the centre of particle (b).
1 – single pulse; 2, 3 – series of pulses. R0=10 nm; τp=10-13 s; I0=1010 W/cm2;
ν = 160GHz (2), 320GHz (3).

Слайд 24

Pressure oscillations outside the particle (r =1nm from surface). 1 - single

pulse;
2 – series of pulses, ν = 160GHz

Gold nanoparticles in water
(excitation by series of short pulses)

Resonance enhancement of the oscillation amplitude

Thermomechanical action of ultrashort laser pulses on metallic nanostructures

Содержание

Damping oscillations:M. Perner, S. Gresillon, J. März, G. von Plessen, J. Feldmann // Phys. Rev. Lett.

Laser-induced explosion of gold nanoparticles: potential role for nanophotothermolysis of

Cavitation phenomena around nanoparticles Gold nanoparticle targeted photoacoustic cavitation for

Excitation of acoustic vibrations in nonspherical metallic nanoparticlesDamping of acoustic

Photothermal Cancer Therapy and Imaging Based on Gold NanorodsWON IL

Excitation of shock waves under absorption of laser radiation in

Hypersonic Modulation of Light in Three-Dimensional Photonic and Phononic Band-Gap

Main stages of thermooptical excitation of acoustic pulse:-absorption of laser

The Lagrange equations for the one-dimensional motion of a continuous medium

Peculiarities of the problem:- size of metallic structures (10-100 nm);-

- particle size (10-100nm);- pulse duration (100fs);Fast dynamics in small

heat source functionelectron-phonon relaxationThe heating of metals with ultra short

Mie–Grünheisen state equation for metallic nanoparticle:Mie–Grünheisen state equation for environment:14

Lagrange equations [2]:Artificial viscosity[2] R.D. Richtmayer, and K.W. Morton, Difference Methods

Heat transfer equation [3]:[3] V.K. Saul’ev, Parabolic Equations Integration by Grid

Plane geometry α=1Space distributions of temperature (а), velocity (b) and pressure

Cylindrical geometryα=2aSpace distributions of temperature (а), velocity (b) and pressure (c, d)

Time dependences of temperature in the centre of gold nanoparticleSpherical geometry:

Сферическая геометрия α=3Space distributions of temperature (а), velocity (b) and pressure

Oscillations of nanoparticle Spherical geometry: gold nanoparticle in water21

Pressure oscillations outside the particle (r =1nm from surface). Spherical geometry: gold

Gold nanoparticles in water (excitation by series of short pulses)Resonance enhancement