Direct visualization of the complete evolution of femtosecond laser-induced surface structural dynamics of metals

Light, Science & Applications
Ranran FangChunlei Guo

Abstract

Despite extensive studies of femtosecond laser-material interactions, even the simplest morphological responses following femtosecond pulse irradiation have not been fully resolved. Past studies have revealed only partial dynamics. Here we develop a zero-background and high-contrast scattered-light-based optical imaging technique through which we capture, for the first time, the complete temporal and spatial evolution of the femtosecond laser-induced morphological surface structural dynamics of metals from start to finish, that is, from the initial transient surface fluctuations, through melting and ablation, to the end of resolidification. We find that transient surface structures first appear at a delay time on the order of 100 ps, which is attributed to ablation driven by pressure relaxation in the surface layer. The formation dynamics of the surface structures at different length scales are individually resolved, and the sequence of their appearance changes with laser fluence is found. Cooling and complete resolidification, observed here for the first time, are shown to occur more slowly than previously predicted by two orders of magnitude. We examine and identify the mechanisms driving each of these dynamic steps. The visu...Continue Reading

References

Nov 13, 1999·Science·C W SidersC P Barty
Nov 25, 2003·Science·Bradley J SiwickR J Dwayne Miller
Mar 20, 2006·Optics Express·A Y Vorobyev, Chunlei Guo
Apr 7, 2010·Physical Review Letters·M E PovarnitsynP R Levashov
Jul 14, 2010·Annual Review of Biomedical Engineering·Nada N BoustanyVadim Backman
Apr 27, 2012·Optics Express·Matthias DomkeHeinz P Huber

❮ Previous
Next ❯

Citations

Aug 10, 2017·Optics Express·Fotis FraggelakisRainer Kling
Sep 1, 2018·Light, Science & Applications·Jörn Bonse
Feb 13, 2020·Light, Science & Applications·Sohail A JalilChunlei Guo
Nov 28, 2017·Scientific Reports·Haichao YuJun Yang
Jan 1, 2021·Optics Express·M BurgerI Jovanovic
May 1, 2021·Micromachines·Fan ZhangFeng Chen

❮ Previous
Next ❯

Methods Mentioned

BETA
X-ray
electron diffraction
imaging technique

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Chemistry Chemical Physics : PCCP
Ignacio Lopez-QuintasMargarita Martin
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Nikita BityurinDieter Bäuerle
© 2022 Meta ULC. All rights reserved