Results 81 to 90 of about 2,848,759 (416)

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

Image Transport Through Meter-Long Randomly Disordered Silica-Air Optical Fiber

open access: yesScientific Reports, 2018
We present a randomly disordered silica-air optical fiber featuring a 28.5% air filling fraction in the structured region, and low attenuation below 1 dB per meter at visible wavelengths.
Jian Zhao   +6 more
doaj   +1 more source

Rapid Test for Adulteration of Fritillaria Thunbergii in Fritillaria Cirrhosa by Laser-Induced Breakdown Spectroscopy

open access: yesFoods, 2023
Fritillaria has a long history in China, and it can be consumed as medicine and food. Owing to the high cost of Fritillaria cirrhosa, traders sometimes mix it with the cheaper Fritillaria thunbergii powder to make profit.
Kai Wei   +9 more
doaj   +1 more source

Photonic Astronomy and Quantum Optics [PDF]

open access: yes, 2007
Review; 32 pages, 15 figures, 167 references. Book chapter to appear in: D.Phelan, O.Ryan & A.Shearer, eds.: High Time Resolution Astrophysics (Astrophysics and Space Science Library, Springer, 2007).
openaire   +3 more sources

Geometry‐Based Scan Curve Analysis: Rapid Method for the Evaluation of Scan Strategies in Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold   +9 more
wiley   +1 more source

Non-reciprocal nonlinear optic induced transparency and frequency conversion on a chip [PDF]

open access: yesPhys. Rev. Lett. 117, 123902 (2016), 2015
Developments in photonic chips have spurred photon based classical and quantum information processing, attributing to the high stability and scalability of integrated photonic devices [1, 2]. Optical nonlinearity [3] is indispensable in these complex photonic circuits, because it allows for classical and quantum light sources, all-optical switch ...
arxiv   +1 more source

3D integration enables ultralow-noise isolator-free lasers in silicon photonics

open access: yesNature, 2023
Photonic integrated circuits are widely used in applications such as telecommunications and data-centre interconnects^ 1 – 5 . However, in optical systems such as microwave synthesizers^ 6 , optical gyroscopes^ 7 and atomic clocks^ 8 , photonic ...
C. Xiang   +14 more
semanticscholar   +1 more source

Impacts of Device Geometry and Layout on Temperature Profile during Large‐Area Photonic Curing

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates how gate geometry affects peak curing temperature during photonic curing of solution‐processed indium zinc oxide thin‐film transistors. Using 3D simulations and experimental validation, it reveals that larger gate areas and smaller aspect ratios increase curing temperature and thus improve transistor performance. Findings provide
Yasir Fatha Abed   +3 more
wiley   +1 more source

Super-resolution imaging using nano-bells

open access: yesScientific Reports, 2018
In this paper we demonstrate a new scheme for optical super-resolution, inspired, in-part, by PALM and STORM. In this scheme each object in the field of view is tagged with a signal that allows them to be detected separately.
Rafael Fuentes-Domínguez   +4 more
doaj   +1 more source

Photon-level tuning of photonic nanocavities [PDF]

open access: yes, 2019
Energy-efficient optical control of photonic device properties is crucial for diverse photonic signal processing. Here we demonstrate extremely efficient optical tuning of photonic nanocavities, with only photon-level optical energy. With a lithium niobate photonic crystal nanocavity with an optical Q up to 1.41 million and an effective mode volume ...
arxiv   +1 more source

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