Results 161 to 170 of about 25,377 (291)

The Fiery Eyes of a Maenad: Origin Determination of Faceted Garnet Eye Inlays in a Roman Bronze Bust From Southern Tyrol

open access: yesArchaeometry, EarlyView.
ABSTRACT In 1837, the Tyrolean State Museum Ferdinandeum in Innsbruck, Austria, purchased a Roman bronze statue of a maenad from the 2nd century ce with red garnets as facetted eye inlays found near Brixen, Southern Tyrol. These garnets were investigated using optical microscopy, a portable hand‐held and a stationary micro‐X‐ray fluorescence device, as
H. Albert Gilg   +3 more
wiley   +1 more source

Development of a pore pressure sensor employing fibre Bragg gratings [PDF]

open access: yes, 2008
Monitoring pore pressure is important to understand and predict the mechanical behaviour of soil, helping engineers to assess the stability of slopes and built infrastructures.
Gonçalves Correia, Ricardo Nuno
core  

Bragg grating design method for the implementation of an optimised symmetric add/drop multiplexer

open access: yes
An efficient and simple method is proposed for the design of a novel Bragg grating based optical add/drop multiplexer. Central to this method is the existence of generic engineering curves that relate for any BG of a specific apodization profile, its ...
Riziotis, C., Zervas, M.N.
core  

Electrically Responsive Structural‐Color Materials

open access: yesAggregate, Volume 7, Issue 7, July 2026.
This review highlights electrically responsive structural‐color materials as next‐generation electrochromic platforms, summarizing key structural designs, modulation mechanisms, and performance metrics to enable continuous, low‐voltage, and tailorable color tuning for advanced display, camouflage, and security applications.
Qiming Wang   +4 more
wiley   +1 more source

Synthesis, Characterization, and Optical Properties of Undoped and Te‐Doped W(SxSe(1−x))2 and Core‐Shell WS2@W(SxSe(1−x))2 Nanotubes

open access: yesIsrael Journal of Chemistry, Volume 66, Issue 4, July 2026.
W(SxSe1−x)2, Te:WSSe, and WS2@WSSe nanotubes were synthesized through controlled precursor composition. The W(SxSe1−x)2 and Te:WSSe nanotubes exhibit small‐diameter (<30 nm), high‐yield, and well‐defined excitonic transitions. Composition tuning via S/Se ratios increases interlayer spacing with higher Se content. The incorporation of Te remains limited
Philip Nathaniel Immanuel   +11 more
wiley   +1 more source

Investigation of code reconfigurable fibre Bragg gratings for Optical Code Division Multiple Access (OCDMA) and Optical Packet Switching (OPS) Networks

open access: yes, 2009
This thesis documents my work in the telecommunication system laboratory at the Optoelectronics Research Centre, towards the implementation of code reconfigurable OCDMA and all-optical packet switching nodes based on fibre Bragg grating (FBG) technology.
Tian, Chun
core  

A personal 360° view of applications of ‘biomimetic’ molecular recognition

open access: yesJournal of Chemical Technology &Biotechnology, Volume 101, Issue 7, Page 1300-1311, July 2026.
Abstract Molecular recognition between biological molecules has formed the basis for innumerable applications in biotechnology for the last seven decades or so. Techniques such as affinity chromatography, solid‐phase and aqueous two‐phase extraction, affinity precipitation, biomimetic catalytic systems, biosensors and molecular imprinting all exploit ...
Christopher R Lowe
wiley   +1 more source

Interrogation procedure for double addressed fiber Bragg structures as sensors of radiophotonic fewsensor system

open access: yesФизика волновых процессов и радиотехнические системы, 2018
Microwave photonic sensor systems represent a wide class of information systems with measurement conversion that use standardized analog and parallel links of parallel and sequential type with filtering, allowing to functionally displaying the ...
A.Zh. Sakhabutdinov, O.G. Morozov
doaj  

Preparation of Rocksalt‐Type Semiconductor Ca2TaN3 via Hot Isostatic Pressing

open access: yesZeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 9, 3 June 2026.
The rocksalt‐type nitride Ca2TaN3 was prepared via hot isostatic pressing at 1400°C and 150 MPa of static dinitrogen pressure. The yellow compound is a semiconductor with a bandgap of 2.5 eV. The rocksalt‐type double nitride Ca2TaN3 was synthesized via hot isostatic pressing (HIP) at 1400°C and 150 MPa static dinitrogen pressure from Ca3N2 and Ta3N5 ...
Adriana Grünwald   +3 more
wiley   +1 more source

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