Results 201 to 210 of about 1,467,330 (258)

Limits to the Hall Effect and Other Nonreciprocal Effects in Three‐Dimensional Metamaterials

Advanced Materials, EarlyView.
Comprehensive and fundamental bounds on nonreciprocal effects in three‐dimensional metamaterials are derived. They reveal that the effective Hall mobility cannot exceed the largest constituent mobility, that, under certain conditions, the Verdet constant cannot be enhanced, and that, for constituents with Hall coefficients of the same sign, the largest
Christian Kern, Graeme W. Milton
wiley   +1 more source

Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses

Advanced Materials, EarlyView.
Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami, Yangming Wang, Seigo Souma, Hiroto Nakamura, Akito Sakai, Takumi Osumi, Hang Su, Hikaru Watanabe, Shun'ichiro Kurosawa, Rikuto Oiwa, Daisuke Nishio‐Hamane, Kosuke Nakayama, Takuya Nomoto, Ryotaro Arita, Takafumi Sato, Satoru Nakatsuji   +15 more
wiley   +1 more source

Sub‐Nanometer Curvature Unlocks Quantum Orbital Flexoelectricity in Graphene

Advanced Materials, EarlyView.
In self‐assembled, reproducible, large‐area, quasi‐pristine graphene nanowrinkles, extreme curvature forces out‐of‐plane π‐electrons toward hybridization, driving a transition from classical to quantum orbital flexoelectricity. As curvature approaches the fundamental physical limit set by the C─C bond length, the resulting polarization increases by ...
Sathvik Ajay Iyengar, James G. McHugh, Jonathan P. Salvage, Robert Vajtai, Venkataramana Gadhamshetty, Alan B. Dalton, Manoj Tripathi, Pulickel M. Ajayan, Vincent Meunier   +8 more
wiley   +1 more source

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Polarization Microscopy

Current Protocols in Cell Biology, 2002
AbstractThis unit provides an introduction to polarization microscopy, the optics involved, and practical considerations for observing submicroscopic structures. The unit also includes specific examples for visualization of microtubules in the mitotic spindle, chromatin within maturing spermatids, and the biocrystalline skeletal spicules in larval ...
openaire   +2 more sources

Polarization effects in 4Pi microscopy

Micron, 2011
The effects of different apodization conditions and polarization distributions on imaging in 4Pi microscopy are discussed. Performance parameters are derived that allow the different implementations to be compared. 4Pi microscopy is mainly used because of its superior axial imaging performance, but it is shown that transverse resolution is also ...
Sheppard, C.J.R., Gong, W., Si, K.
openaire   +2 more sources

FRET by Fluorescence Polarization Microscopy

2008
The widespread success in using genetically encoded fluorescent proteins (FPs) to track protein motion in living cells has led to extensive interest in measuring Förster resonance energy transfer (FRET) between two FPs of different colors. FRET occurs over distances less than 10-nm and can thus be used to detect protein-protein interactions and changes
David W, Piston, Mark A, Rizzo
openaire   +2 more sources

Multiphoton Polarization Microscopy

1998
Abstract By analyzing the polarization or anisotropy using steady-state or time-resolved methods, orientation information or dynamics of molecular systems can be investigated (Lakowicz, 1999). The natural extension of polarization spectroscopy is to implement polarizationresolved analysis in conjunction with optical microscopy.
Yen Sun, Wen Lo, Jiunn Wen Su, Sung-Jan Lin, Shiou-Hwa Jee,, Chen-Yuan Dong   +5 more
openaire   +1 more source

Microscopy with Polarized Light

1978
The historic observation of double imaging by a highly birefringent crystal, such as that of calcite (see Chapter 1), can easily be repeated on an overhead projector. A small dot of black paper is pasted on the projector’s window near its center, then a cleavage rhombohedron of clear calcite is placed over the dot.
Theodore George Rochow, Eugene George Rochow   +1 more
openaire   +1 more source

Quantitative polarized light microscopy

Journal of Microscopy, 2003
SummaryWe describe a simple modification to a confocal microscope, which analyses the state of polarization of light emerging from the specimen so as to permit quantitative polarized light microscopy to be performed. The system uses a novel form of rotating analyser which, together with lock‐in detection, permits images to be obtained where the image ...
F, Massoumian, R, Juskaitis, M A A, Neil, T, Wilson   +3 more
openaire   +2 more sources

Polarization conversion in confocal microscopy with radially polarized illumination

Optics Letters, 2009
The effects of using radially polarized illumination in a confocal microscope are discussed, and the introduction of a polarization mode converter into the detection optics of the microscope is proposed. We find that with such a configuration, bright-field imaging can be performed without losing the resolution advantage of radially polarized ...
Tang, W.T., Yew, E.Y.S., Sheppard, C.J.R.   +2 more
openaire   +2 more sources