Results 191 to 200 of about 732,831 (345)

Stochastic differential equations involving positive noise [PDF]

open access: green, 1991
Tom Lindstrøm   +2 more
openalex   +1 more source

(3+1)D Printing of Core–Clad Waveguide by Two‐Photon Polymerization

open access: yesAdvanced Materials Technologies, EarlyView.
Low‐loss, single‐mode core–clad optical waveguides are fabricated using a novel (3+1)D multiphoton polymerization technique in a hybrid resin. Precise laser power control and multi‐pass exposure enable refractive index engineering and reduce scattering. Raman spectroscopy confirms the correlation between polymerization and index change.
Raphaël Hazem   +4 more
wiley   +1 more source

Optimizing Metamaterial Inverse Design with 3D Conditional Diffusion Model and Data Augmentation

open access: yesAdvanced Materials Technologies, EarlyView.
A generative AI model, the 3D conditional diffusion model (3D‐CDM), is introduced to enhance the inverse design of voxel‐based metamaterials. A data augmentation technique based on topological perturbation expands the dataset, further improving generation quality and accuracy.
Xiaoyang Zheng   +2 more
wiley   +1 more source

Monolithic Integration of Sub‐50 nm III–V Nano‐Heterostructures on Si (001) for Telecom Photonics

open access: yesAdvanced Optical Materials, EarlyView.
The monolithic integration of III‐V nano‐heterostructures on silicon via selective area epitaxy with dimensions down to 20 nm is demonstrated. The arsenic diffusion mechanism is employed to enable efficient light emission at the telecom wavelength range.
Alisha Nanwani   +7 more
wiley   +1 more source

Self‐Assembled Physical Unclonable Function Labels Based on Plasmonic Coupling

open access: yesAdvanced Optical Materials, EarlyView.
This article introduces advanced anti‐counterfeit labels crafted through DNA‐guided self‐assembly of plasmonic nanoparticles. Utilizing nanosphere lithography for dense and precise nanoparticle placement, these labels feature unique, unclonable optical signatures achieved through plasmonic coupling, detectable by an economical 3D‐printed dark field ...
Mihir Dass   +9 more
wiley   +1 more source

Digitized Phase‐Change Material Heterostack for Transmissive Diffractive Optical Neural Network

open access: yesAdvanced Photonics Research, EarlyView.
A phase‐change‐material‐based digitized heterostack is experimentally demonstrated and theoretically analyzed for future energy‐efficient, fast reconfigured, and compact transmissive diffractive optical neural networks. All‐optical and fully reconfigurable transmissive diffractive optical neural network (DONN) architectures emerge as high‐throughput ...
Ruiyang Chen   +3 more
wiley   +1 more source

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