Results 131 to 140 of about 34,940 (240)

Hyperspectral tomographic diffractive microscopy: Development and applications

Journal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori, Carlos Alberto Chacón Ávila, Matthieu Debailleul, Nicolas Verrier, Olivier Haeberlé   +4 more
wiley   +1 more source

Relativistic and non-relativistic holography [PDF]

, 2010
Holography is one of the most interesting developments in String theory in the past few years. In this thesis, we discuss various aspects of the correspondence at the phenomenological and conceptual levels.
Nguyen Hoang, Nam, Hoang, Nam Nguyen
core  

Constructive holography

Journal of High Energy Physics
A bstract We consider the collective field theory description of the singlet sector of a free and massless matrix field in d dimensions.
Robert de Mello Koch, Hendrik J. R. Van Zyl   +1 more
openaire   +4 more sources

In operando imaging of the space‐charge region in a 4H‐SiC MOSCAP using STEM‐EBIC

Journal of Microscopy, EarlyView.
Abstract In situ biasing electron microscopy is the necessary step forward in being able to characterise nanoscale devices and device interfaces. STEM‐EBIC is a new approach that can help fill the missing gaps in creating reproducible methodologies for in situ biasing TEM.
Eoin Moynihan, Arne Renz, Akif Yildirim, Peter Gammon, Richard Beanland, Ana M. Sanchez   +5 more
wiley   +1 more source

Edge-preserving autofocusing in digital holography

, 2016
In digital holography, it is essential to know the axial position of the recorded object for reconstruction. Here we propose an autofocusing algorithm using structure tensor to determine the focal distance and to extract the edge information ...
Edmund Lam, Ren, Z, Zhenbo Ren, Lam, EYM
core   +1 more source

Noise reduction of electron holography observations for a thin-foiled Nd-Fe-B specimen using the wavelet hidden Markov model

Applied Microscopy
In this study, we investigate the effectiveness of noise reduction in electron holography, based on the wavelet hidden Markov model (WHMM), which allows the reasonable separation of weak signals from noise.
Sujin Lee, Yoshihiro Midoh, Yuto Tomita, Takehiro Tamaoka, Mitsunari Auchi, Taisuke Sasaki, Yasukazu Murakami   +6 more
doaj   +1 more source

Twisted holography

Journal of High Energy Physics
A bstract We derive and test a novel holographic duality in the B-model topological string theory. The duality relates the B-model on certain Calabi-Yau three-folds to two-dimensional chiral algebras defined as gauged βγ
Kevin Costello, Davide Gaiotto
openaire   +3 more sources

Misaligning Cascaded Liquid Crystal Elements for Continuously Tunable Axial Spin‐Dependent Splitting

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
Continuously tunable axial spin splitting is achieved by controlling the lateral misalignment of cascaded Pancharatnam‐Berry phase liquid crystal elements. The displacement generates a spin‐dependent quadratic phase, enabling linear, sign‐reversible focal adjustment and dynamic focus interchange for orthogonal circular polarizations.
Yougang Ke, Xinhuai Gu, Linzhou Zeng, Zhangming Hong, Jingqing Yu, Yingqun Xiao, Xinxing Zhou, Jin Li   +7 more
wiley   +1 more source

Dynamic Control of Phase Matching in Nonlinear Metasurfaces Using Pancharatnam–Berry Phase

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
Can mechanical rotation of a metasurface control the phase of a nonlinear optical signal? In a dual‐metasurface multipass cell, a circularly polarized pump interacts repeatedly with two plasmonic metasurfaces between two mirrors. By exploiting the geometric phase, rotating one metasurface shifts the phase‐matching condition of the second‐harmonic ...
Madona Mekhael, Roman Calpe, Tommi K. Hakala, Robert Fickler, Mikko J. Huttunen   +4 more
wiley   +1 more source

Toward a consistent definition of holographic entanglement entropy in de Sitter space

Journal of High Energy Physics
We investigate a new definition of holographic entanglement entropy in the framework of static patch holography for de Sitter space. Using the replica trick and twist operator formalism, we derive an entropy functional in dS3 expressed through de Sitter ...
Shan-Ming Ruan, Yu-ki Suzuki
doaj   +1 more source