Results 41 to 50 of about 9,843 (297)

Transmission ellipsometry, circular birefringence, and circular dichroism in the Mueller-matrix formalism [PDF]

AIP Advances
A theoretical framework is presented to describe absorption spectroscopy (AS), spectroscopic ellipsometry (SE), circular birefringence (CB), and circular dichroism (CD) in the Mueller-matrix formalism.
Roger Magnusson, Stefan Schoeche, Hans Arwin, James N. Hilfiker, Kenneth Järrendahl, Arturo Mendoza-Galván   +5 more
doaj   +1 more source

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

Advanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota, Yuya Nakata, Erika Katayama, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Atsushi Shishido   +6 more
wiley   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Using polarimeter and Stokes parameters for measuring linear birefringence and diattenuation properties of optical samples

EPJ Web of Conferences, 2010
A technique is proposed for measuring the linear birefringence and linear diattenuation of an optical sample using a polarimeter. In the proposed approach, the principal axis angle (α), phase retardance (β), diattenuation axis angle (θd), and ...
Tsung-tse Y., Jing Fung L., Tsung-chih Y., Po-chun C., Yu Lung L.   +4 more
doaj   +1 more source

A6.1 Full Stress Tensor Measurement by Photoelasticity in Silicon

, 2021
S.75-76Photoelasticity offers a promising measurement tool for the in-line measurement of semiconductor materials such as silicon. Photoelasticity is a contactless, optical and full-field measurement method based on stress-induced birefringence. However,
T. Härtling, Schönfelder, Stephan, Härtling, Thomas, S. Schoenfelder, Stöhr, Markus, G. Gerlach, M. Stoehr, Gerlach, Gerald   +7 more
core   +1 more source

Dye‐Initiated Chirped Cholesteric Polymer Networks Exhibiting Broadband Dissipative Chiral Photonic Bands

Advanced Functional Materials, EarlyView.
A dye‐based photoinitiator acting as a structure‐directing element, guides the formation of a cholesteric polymer network that behaves as a chirped photonic structure with dissipative chiral coupling. Photopolymerization freezes a depth‐dependent helical pitch, broadening the Bragg resonance spectrum.
Alfredo Mazzulla, Pasquale Pagliusi, Gabriella Cipparrone   +2 more
wiley   +1 more source

PEN fluorescent birefringence sensor in ethanol volatilization measurement [PDF]

EPJ Web of Conferences
Through the fluorescence characteristics of polyethylene naphthalate (PEN) material under short-wavelength excitation, a boradband light source of visible wavelengths can be generated.
Twu Ruey-Ching, Qiu Shu-Quan
doaj   +1 more source

A laser heterodyne polarimeter for birefringence measurement

, 2017
We introduce a laser heterodyne polarimeter designed for the precision measurement of sub $\mu\mathrm{rad}$ differential phase shifts due to birefringence.
Gabriel Alberts (17502072), Guido Mueller (14410653), Harold Hollis (17502069), D. B. Tanner (7664699)   +3 more
core   +1 more source

Packed for Ossification: High‐Density Bioprinting of hPDC Spheroids in HAMA Toward Endochondral Ossification

Advanced Healthcare Materials, EarlyView.
Human periosteum‐derived cell spheroids bioprinted at high density within a hyaluronic acid matrix promote fusion and hypertrophic cartilage formation in vitro. Early encapsulation enhances spheroid interaction and matrix maturation, generating scalable cartilage templates intended for endochondral bone regeneration.
Ane Albillos Sanchez, Maria Paula Marks, Paula Casademunt, Adrián Seijas‐Gamardo, Ioannis Papantoniou, Lorenzo Moroni, Carlos Mota   +6 more
wiley   +1 more source

Polarization Sensitive Imaging with Qubits

Applied Sciences, 2022
We compare reconstructed quantum state images of a birefringent sample using direct quantum state tomography and inverse numerical optimization technique.
Vitaly Sukharenko, Roger Dorsinville
doaj   +1 more source