An all-optical, in situ diagnostic for large molecule and nanoparticle detection

2017 ◽  
Author(s):  
Alexandros Gerakis ◽  
Mikhail N. Shneider ◽  
Brentley C. Stratton ◽  
Yevgeny Raitses
Keyword(s):  
Large Molecule ◽  
Nanoparticle Detection ◽  
All Optical

scholarly journals Optical nanomanipulation on solid substrates via optothermally-gated photon nudging

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jingang Li ◽  
Yaoran Liu ◽  
Linhan Lin ◽  
Mingsong Wang ◽  
Taizhi Jiang ◽  
...  
Keyword(s):  
Colloidal Particles ◽  
Solid Substrate ◽  
Optical Scattering ◽  
Functional Nanostructures ◽  
Non Invasive ◽  
Solid Substrates ◽  
All Optical ◽  
Scattering Force ◽  
Reconfigurable Assembly

AbstractConstructing colloidal particles into functional nanostructures, materials, and devices is a promising yet challenging direction. Many optical techniques have been developed to trap, manipulate, assemble, and print colloidal particles from aqueous solutions into desired configurations on solid substrates. However, these techniques operated in liquid environments generally suffer from pattern collapses, Brownian motion, and challenges that come with reconfigurable assembly. Here, we develop an all-optical technique, termed optothermally-gated photon nudging (OPN), for the versatile manipulation and dynamic patterning of a variety of colloidal particles on a solid substrate at nanoscale accuracy. OPN takes advantage of a thin surfactant layer to optothermally modulate the particle-substrate interaction, which enables the manipulation of colloidal particles on solid substrates with optical scattering force. Along with in situ optical spectroscopy, our non-invasive and contactless nanomanipulation technique will find various applications in nanofabrication, nanophotonics, nanoelectronics, and colloidal sciences.

scholarly journals Super-resolution lightwave tomography of electronic bands in quantum materials

Science ◽  
2020 ◽  
Vol 370 (6521) ◽  
pp. 1204-1207
Author(s):  
M. Borsch ◽  
C. P. Schmid ◽  
L. Weigl ◽  
S. Schlauderer ◽  
N. Hofmann ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Three Dimensional ◽  
Super Resolution ◽  
Many Body ◽  
Small Quantum ◽  
All Optical ◽  
Quantum Materials ◽  
Quantum Phenomena

Searching for quantum functionalities requires access to the electronic structure, constituting the foundation of exquisite spin-valley–electronic, topological, and many-body effects. All-optical band-structure reconstruction could directly connect electronic structure with the coveted quantum phenomena if strong lightwaves transported localized electrons within preselected bands. Here, we demonstrate that harmonic sideband (HSB) generation in monolayer tungsten diselenide creates distinct electronic interference combs in momentum space. Locating these momentum combs in spectroscopy enables super-resolution tomography of key band-structure details in situ. We experimentally tuned the optical-driver frequency by a full octave and show that the predicted super-resolution manifests in a critical intensity and frequency dependence of HSBs. Our concept offers a practical, all-optical, fully three-dimensional tomography of electronic structure even in microscopically small quantum materials, band by band.

All-optical in-situ analysis of PIAD deposition processes

2008 ◽  
Author(s):  
Steffen Wilbrandt ◽  
Olaf Stenzel ◽  
Norbert Kaiser
Keyword(s):  
In Situ Analysis ◽  
All Optical ◽  
Deposition Processes

All-Optical In Situ Histology of Brain Tissue with Femtosecond Laser Pulses

2013 ◽  
Vol 2013 (4) ◽  
pp. pdb.prot073858-pdb.prot073858 ◽  
Author(s):  
P. S. Tsai ◽  
P. Blinder ◽  
J. A. Squier ◽  
D. Kleinfeld
Keyword(s):  
Femtosecond Laser ◽  
Brain Tissue ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
All Optical

scholarly journals Facile All-Optical Method for In Situ Detection of Low Amounts of Ammonia

iScience ◽  
2020 ◽  
Vol 23 (11) ◽  
pp. 101757
Author(s):  
Yuanchao Liu ◽  
Tristan Asset ◽  
Yechuan Chen ◽  
Eamonn Murphy ◽  
Eric O. Potma ◽  
...  
Keyword(s):  
Optical Method ◽  
All Optical ◽  
In Situ Detection

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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