20181009 Masuhara-Sugiyama Joint Lab Meeting2018 Nobel Prize Physics Awardee Dr. Arthur ASHKIN andOur Research on Laser Trapping Dynamics and Chemistry

Hiroshi MASUHARA
masuhara@masuhara.jp
Department of Applied Chemistry, National Chiao Tung University

Arthur Ashkin
From Wikipedia, the free encyclopedia

Arthur Ashkin (born September 2, 1922)[1][2][3] is an American scientist and Nobel
laureate who worked at Bell Laboratories and Lucent Technologies. Ashkin has been
considered by many as the father of the topical field of optical tweezers,[4][5][6] forwhich he was awarded the Nobel Prize in Physics 2018. He resides in Rumson, NewJersey.[7]Ashkin started his work on manipulation of microparticles with laser light in the late1960s which resulted in the invention of optical tweezers in 1986. He also pioneered
the optical trapping process that eventually was used to manipulate atoms, molecules,and biological cells. The key phenomenon is the radiation pressure of light; thispressure can be dissected down into optical gradient and scattering forces.

At Bell Labs, Ashkin worked in the microwave field until about 1960 to 1961, and then switched tolaser research. His research and published articles at that time pertained to nonlinear optics, opticalfibers, parametric oscillators and parametric amplifiers. Also, at Bell Labs during the 1960s, he wasthe co-discoverer of the photorefractive effect in the piezoelectric crystal.[4][18]Ashkin's work formed the basis for Steven Chu's work on cooling and trapping atoms, which earned
Chu the 1997 Nobel Prize in physics.[4][5]Besides optical tweezers, Ashkin is also known for his studies in photorefraction, second harmonic
generation, and non-linear optics in fibers.[4][5]Recent advances in physics and biology using optical micromanipulation include achievementof Bose–Einstein condensationin atomic vapors at submillikelvin temperatures, demonstration ofatom lasers, and detailed measurements on individual motor molecules.[4][5]On October 2, 2018, Ashkin was awarded the Nobel Prize in Physics for his work on opticaltrapping.[21] Ashkin "was honored for his invention of 'optical tweezers' that grab particles, atoms,viruses and other living cells with their laser beam fingers. With this he was able to use the radiationpressure of light to move physical objects, 'an old dream of science fiction', the Royal Swedish
Academy of Sciences said."[22]1994年
出版Our Studyon
Laser Trapping Dynamics and Chemistry in Solution

Trapping and AssemblingSelective TrappingTrapping and PatterningTrapping-induced
Morphological Change and Phase TransitionOur Studyon
Laser Trapping Dynamics and Chemistry at InterfaceReviews and Accounts

Pure Appl. Chem., 2011, 83, 869-883.

Exploring New Trapping PhenomenaOur Studyon
Femtosecond Laser Trapping Dynamics of NanoparticlesOur Laser Trapping Study in NCTU for 2008 April - Present

Nanoparticles

Molecules

Methodology

Polystyrene
SilicaGold

PolymerSupramolecule
Dye
MicelleSpectroscopy
LasingResonance EffectFemtosecond

Trapping
Manipulation
Assembling

Assembling
Patterning
Growth
Deposition
Nucleation
Droplet formation
Ablation
Crystallization
Amyloid fibril formation