Anomalous behavior of a three-dimensional, optically trapped, super-paramagnetic particle

2014 ◽  
Author(s):  
Martin Siler ◽  
Petr Jákl ◽  
Oto Brzobohatý ◽  
Jan Jezek ◽  
Pavel Zemánek
Keyword(s):  
Three Dimensional ◽  
Anomalous Behavior ◽  
Paramagnetic Particle ◽  
Optically Trapped

scholarly journals Three-Dimensional Enantiomeric Recognition of Optically Trapped Single Chiral Nanoparticles

2018 ◽  
Vol 121 (2) ◽  
Author(s):  
Gabriel Schnoering ◽  
Lisa V. Poulikakos ◽  
Yoseline Rosales-Cabara ◽  
Antoine Canaguier-Durand ◽  
David J. Norris ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Enantiomeric Recognition ◽  
Optically Trapped

scholarly journals Thermoelectric Relations in the Conformal Limit in Dirac and Weyl Semimetals

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 814
Author(s):  
Vicente Arjona ◽  
Juan Borge ◽  
María A. H. Vozmediano
Keyword(s):  
Chemical Potential ◽  
Transport Coefficients ◽  
Three Dimensional ◽  
Anomalous Behavior ◽  
Conformal Anomaly ◽  
Electronic Systems ◽  
Electric Transport ◽  
Thermo Electric ◽  
Weyl Semimetals ◽  
Band Crossing

Dirac and Weyl semimetals are three-dimensional electronic systems with the Fermi level at or near a band crossing. Their low energy quasi-particles are described by a relativistic Dirac Hamiltonian with zero effective mass, challenging the standard Fermi liquid (FL) description of metals. In FL systems, electrical and thermo–electric transport coefficient are linked by very robust relations. The Mott relation links the thermoelectric and conductivity transport coefficients. In a previous publication, the thermoelectric coefficient was found to have an anomalous behavior originating in the quantum breakdown of the conformal anomaly by electromagnetic interactions. We analyze the fate of the Mott relation in the system. We compute the Hall conductivity of a Dirac metal as a function of the temperature and chemical potential and show that the Mott relation is not fulfilled in the conformal limit.

scholarly journals The anomalous behavior of liquids in three-dimensional and two-dimensional spaces

2021 ◽  
Vol 13 (2) ◽  
pp. 111-118
Author(s):  
Yury D. Fomin ◽  
◽  
Elena N. Tsiok ◽  
Anton B. Teslyuk ◽  
Valentin N. Ryzhov ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Space Dimension ◽  
Three Dimensional ◽  
Anomalous Behavior ◽  
Two Dimensional ◽  
Step Width ◽  
Density Anomaly ◽  
2D System ◽  
Potential Parameters ◽  
Dynamics Method

Using a molecular dynamics method water-like anomalies in a core-softened system depending on the potential parameters and space dimension were investigated. We have examined the anomalies of density, diffusion and structure and have shown that the sequence of anomalous regions cardinally depends on the repulsive step width and space dimension. Thus, in a three-dimensional (3D) system with small values of the step width the sequence of anomalous regions is the same as in water, whereas in a two-dimensional (2D) system – as in liquid silica. With an increase in the step width, an inversion of the regions of the diffusion anomaly and of the density anomaly is observed. Such an unusual sequence of anomalous regions different from water and liquid silica is exclusively caused by the step width and does not depend on the space dimension.

PRECISE ANALYSIS OF OPTICALLY TRAPPED PARTICLE POSITION AND INTERACTION FORCES IN THE VICINITY OF AN INTERFACE

2002 ◽  
Vol 01 (05n06) ◽  
pp. 645-649
Author(s):  
JUN-ICHI HOTTA ◽  
HIDEHISA TAKASAKI ◽  
HIDEKI FUJIWARA ◽  
KEIJI SASAKI
Keyword(s):  
Total Internal Reflection ◽  
Force Measurement ◽  
Three Dimensional ◽  
Surface Reflection ◽  
Position Sensing ◽  
Particle Position ◽  
Sensing System ◽  
Half Wavelength ◽  
Precise Analysis ◽  
Optically Trapped

We report precise analysis of particle position while optically manipulating a particle in solution. Three-dimensional position sensing system, which we developed for measuring femto-Newton force upon a single particle, was used to detect particle position in nanometer resolution. A laser trapping system and a total internal reflection microscope are combined. During manipulation of a microparticle in the vicinity of an interface, the position of the particle behaves as stepwise transition. The spacing of the stable position is coincident with the half wavelength of the trapping laser beam, so that we conclude the surface reflection from the interface causes the stepwise transition. The force measurement is based on a thermodynamic analysis of Brownian motion, and this system can be applied to measure the force onto a single nanoparticle.

Three-dimensional positioning of optically trapped nanoparticles

2011 ◽  
Vol 50 (34) ◽  
pp. H183 ◽  
Author(s):  
Takayuki Higuchi ◽  
Quang Duc Pham ◽  
Satoshi Hasegawa ◽  
Yoshio Hayasaki
Keyword(s):  
Three Dimensional ◽  
Optically Trapped
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