Mechanism study of nanomaterial synthesis by pulsed laser ablation in liquid

Hongkun Huang; Jiancheng Lai

doi:10.1117/12.2502192

12 November 2018 Mechanism study of nanomaterial synthesis by pulsed laser ablation in liquid

Hongkun Huang, Jiancheng Lai

Proceedings Volume 10813, Advanced Laser Processing and Manufacturing II; 1081318 (2018) https://doi.org/10.1117/12.2502192
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

With the development of nanotechnology, nanomaterial have been widely used in many fields, such as medical technology, catalysis, and biotechnology. Among the methods of nanomaterial fabrication, pulsed laser ablation in liquids (LAL) has attracted great attention as a green and versatile approach to fabricate manifold nanomaterial with ligand-free surface. LAL physical process and mechanism is complicated. Firstly laser focus on the target material through the liquid layer, and the surface material is exfoliated. Then the plasma is generated and expands, accompanying the plasma shock wave. Afterwards, the plasma quenches and releases energy into the surrounding liquid. Finally cavitation bubble appears and collapses. These complex mechanisms affect the properties of the prepared nanomaterial, including shape, size, structure, photoelectric properties, etc. Here, we investigate physical process and mechanism of nanomaterial prepared by LAL in detail using high-speed camera experimental system and CFD (Computational Fluid Dynamics) simulation mode. According to the analysis of LAL mechanism, it is reasonable to assume that laser-induced bubble can act as an ideal reactor for nanomaterial synthesis. The movement of the nanoparticles depends on the bubble oscillation. They move outward when the bubble expands and move inward when the bubble shrinks. It shows that the velocity, pressure and the temperature are high at the beginning of expansion and the collapse moment of the bubble, which is quiet benefited for the nanomaterial synthesis.

Citation Download Citation

Hongkun Huang and Jiancheng Lai "Mechanism study of nanomaterial synthesis by pulsed laser ablation in liquid", Proc. SPIE 10813, Advanced Laser Processing and Manufacturing II, 1081318 (12 November 2018); https://doi.org/10.1117/12.2502192

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Laser ablation

Nanoparticles

Liquids

Nanomaterials

Nanomaterial synthesis

Plasma

High speed cameras

Show All Keywords

Keywords/Phrases

Search In:

Publication Years