Results 61 to 70 of about 13,916 (292)

Two-octave-spanning dichroic integrated photonic filters on thin-film lithium niobate [PDF]

open access: yesAPL Photonics
Integrated optical filters are essential devices for spectral shaping and suppression of optical waves in photonic systems. We present an ultrabroadband dichroic filter with a potential operation range spanning more than two octaves (500–2100 nm).
Pooja S. Kulkarni   +2 more
doaj   +1 more source

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

open access: yesAdvanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett   +19 more
wiley   +1 more source

Fibre optical parametric devices for large frequency-shift wavelength conversion

open access: yes, 2012
In this thesis, I investigate fibre optical parametric amplifiers (OPA) and oscillators (OPO), in terms of their potential for efficient large frequency-shift wavelength conversion. The underlying physical mechanism of fibre four wave mixing (FWM) offers
van der Westhuizen, Gysbert Johannes
core  

Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
A mechanism of how Pb‐chelation chemistry governs coordination geometry and initial nucleation behavior at the precursor level of halide perovskite, by regulating the deprotonation state of a chelating additive, is elucidated. This allows for innovative reaction‐system design principles that promote coherent growth while suppressing defect formation in
Byeong Jun Kim   +13 more
wiley   +1 more source

Dual‐Inductive and Programmable Switching: A New Paradigm in Ionic Interface‐Controlled Perovskite Memory

open access: yesAdvanced Functional Materials, EarlyView.
A fully programmable, dual‐inductive switchable halide perovskite memristor is demonstrated through precise BDAI2‐mediated interface engineering. This ion‐modulating layer suppresses stochastic filamentary growth, enabling stable, non‐filamentary switching via dynamic barrier modulation.
So‐Yeon Kim, Juan Bisquert
wiley   +1 more source

Investigation of Photonic Crystal Nanobeams for Resonator Coupling, Modal Fingerprinting and Wavelength Filtering

open access: yes, 2020
Photonic crystals are often referred to as “the semiconductors of light”. As semiconductors have revolutionized the electronics industry, photonic crystals have shown immense potential to control light for a variety of nanophotonic applications ...
Afzal, Francis Omar
core  

Polarization-independent tunable optical filter with variable bandwidth based on silicon-on-insulator waveguides

open access: yesNanophotonics, 2018
We present a polarization-independent tunable optical filter with variable bandwidth based on silicon-on-insulator (SOI) waveguides. The polarization-independent operation is achieved through the use of a polarization splitter-rotator and a polarization ...
Wang Haoyan   +6 more
doaj   +1 more source

Near‐Infrared Light‐Driven Zn/Au Janus Micromotors for Multiplex SERS Detection of Anticancer Drugs

open access: yesAdvanced Functional Materials, EarlyView.
Zn/Au Janus micromotors, propelled by thermophoretic effects under NIR light, function as active SERS platforms for single and multiplex detection of anticancer drugs. Their dynamic motion enhances analyte exchange at the Au interface, reducing saturation and competitive adsorption, thereby improving sensitivity and extending the linear detection range.
Tijana Maric   +8 more
wiley   +1 more source

Monolithically integrated silicon photonic wavelength converter with on-chip widely tunable idler filtering

open access: yes
All-optical wavelength conversion is a key technology for resolving wavelength contention challenges in routing and switching in a format- and transmission-rate-transparent fashion.
Liu, Hao   +16 more
core   +1 more source

Wavelength dispersing devices for soft and ultrasoft x-ray spectrometers [PDF]

open access: yes, 1984
Monochromatization combining total reflection by a selected mirror and an appropriate filter offered an alternative approach in order to increase measurable intensity with reasonable spectral resolution.
Ryon, R.W., Shoji, Takashi, Arai, Tomoya
core  

Home - About - Disclaimer - Privacy