Results 81 to 90 of about 60,075 (261)

High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer

Light: Science & Applications
Flat optics have attracted interest for decades due to their flexibility in manipulating optical wave properties, which allows the miniaturization of bulky optical assemblies into integrated planar components.
Jingen Lin, Jinbei Chen, Jianchao Zhang, Haowen Liang, Juntao Li, Xue-Hua Wang   +5 more
doaj   +1 more source

Tight Focusing of Light

Photonics
The effects of various properties on the tight focusing of light are considered. In particular, polarization of the incident field is an important consideration.
Colin J. R. Sheppard
doaj   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Thin metalens with high numerical aperture

Computer Optics, 2017
We designed, numerically simulated, fabricated and characterized a thin metalens in an amorphous silicon film. The lens has a diameter of 30 µm, a 633-nm focal length equal to the incident wavelength, a 220-nm period of the subwavelength features, and a 110-nm relief depth.
V. Kotlyar, A. Nalimov, S. Stafeev, L. O'Faolain, M. Kotlyar   +4 more
openaire   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

3D-printed multilayer structures for high-numerical aperture achromatic metalenses. [PDF]

Sci Adv, 2023
Pan CF, Wang H, Wang H, S PN, Ruan Q, Wredh S, Ke Y, Chan JYE, Zhang W, Qiu CW, Yang JKW.   +10 more
europepmc   +1 more source

Ultra‐Confinement of Polaritons in Single Atomic Layer Ag Photonic Quantum Dots

Advanced Materials, EarlyView.
Strong confinement of surface phonon polaritons of silicon carbide was achieved in photonic quantum dots fabricated from van der Waals heterostructure of epitaxial graphene over single‐atomic layer silver. Scattering‐type scanning near‐field optical microscopy combined with an analytical approach, developed to reveal local propagation constants with ...
Xinyi Li, Tetyana Ignatova, Chengye Dong, Krishnan Mekkanamkulam Ananthanarayanan, Rinu Abraham Maniyara, Arpit Jain, Furkan Turker, Vinay Kammarchedu, Aida Ebrahimi, Joshua A. Robinson, Slava V. Rotkin   +10 more
wiley   +1 more source

Implantable Micro-optics for label-free non-linear imaging [PDF]

EPJ Web of Conferences
Non-linear excitation microscopy offers superior in-vivo imaging but faces challenges in deep tissue. High numerical aperture beams suffer spherical aberrations, while tissue scattering impacts image quality.
Marini Mario, Panzeri Davide, Nardini Alessandra, Kariman Behjat S., Conci Claudio, Sironi Laura, Inverso Donato, Jacchetti Emanuela, Martinez Vázquez Rebeca, Osellame Roberto, Collini Maddalena, Cerullo Giulio, Raimondi Manuela Teresa, Kabouraki Elmina, Farsari Maria, Kehaghias Nikos, Tourlouki Konstantina, Chirico Giuseppe   +17 more
doaj   +1 more source

Viral Infection‐Inspired Autonomous Detection of Fusion‐Competent Viruses for Screening and Environmental Surveillance

Advanced Materials, EarlyView.
Inspired by viral entry mechanisms, the FUSION assay enables autonomous detection of respiratory viruses via membrane fusion–triggered CRISPR‐Cas13a activation. VEACON selectively fuses with fusion‐competent viruses, triggering fluorescence within confined vesicles.
Jae Chul Park, Yidam Song, Hyun‐Woo Choi, Jaeuk Sung, Harin Jin, WonSeok Gwak, Kirim Yoo, Soohwang Lee, Jongeon Park, Jeongmin Kim, Hye‐Jun Jo, Jahyun Koo, Youngdo Jeong, Kwan Hyi Lee, Seung‐Jung Kee, Hojun Kim   +15 more
wiley   +1 more source