Results 191 to 200 of about 1,083 (258)

Sub-terahertz metamaterial stickers for non-invasive fruit ripeness sensing. [PDF]

Nat Food
Karmakar S, Kludze A, Chandra R, Ghasempour Y.   +3 more
europepmc   +1 more source

Highly Crystalline CsPbBr3 Thin Films With Amplified Spontaneous Emission via High‐Pressure Recrystallization

Advanced Optical Materials, EarlyView.
High‐pressure recrystallization provides a reproducible route to high‐quality CsPbBr3${\rm CsPbBr}_{3}$ thin films. Optimized processing at 300 bar yields smooth, pinhole‐free, single‐phase 3D perovskite layers with tunable thickness, enhanced crystallinity, reduced amplified‐spontaneous‐emission threshold, improved photostability, and phase‐transition
Asma Miled, Trong Tam Nguyen, Thi Anh Vui Nguyen, José Penuelas, Aziz Benamrouche, Céline Chevalier, Thi Kim Anh Hoang, Gaëlle Trippé‐Allard, Elsa Cassette, Brice Devif, Emmanuel Drouard, Emmanuelle Deleporte, Hanh Hong Mai, Abdelaziz Bouazizi, Christian Seassal, Hai Son Nguyen   +15 more
wiley   +1 more source

Contactless and short-range vital signs detection with doppler radar millimetre-wave (76-81 GHz) sensing firmware. [PDF]

Healthc Technol Lett
Chen PY, Lin HY, Zhong ZH, Pai NS, Li CM, Lin CH.   +5 more
europepmc   +1 more source

Spectral Condensing of All‐Dielectric Structural Colors via Cascaded Formation of Self‐Similar Beams

Advanced Optical Materials, EarlyView.
Standalone low‐index microscale ridges (MRs) are promising platforms for all‐dielectric structural color generation. They are compact and easy to fabricate, but their color purity trails behind that of resonator‐ or periodic pattern‐based structural color pixels.
Rabiul Islam Sikder, Jaeyoun Kim
wiley   +1 more source

Millimetre-scale bioresorbable optoelectronic systems for electrotherapy. [PDF]

Nature
Zhang Y, Rytkin E, Zeng L, Kim JU, Tang L, Zhang H, Mikhailov A, Zhao K, Wang Y, Ding L, Lu X, Lantsova A, Aprea E, Jiang G, Li S, Seo SG, Wang T, Wang J, Liu J, Gu J, Liu F, Bailey K, Li YFL, Burrell A, Pfenniger A, Ardashev A, Yang T, Liu N, Lv Z, Purwanto NS, Ying Y, Lu Y, Hoepfner C, Melisova A, Gong J, Jeong J, Choi J, Hou A, Nolander R, Bai W, Jin SH, Ma Z, Torkelson JM, Huang Y, Ouyang W, Arora RK, Efimov IR, Rogers JA.   +47 more
europepmc   +1 more source

Confinement‐Induced Nonlocality and Optical Nonlinearity of Transdimensional Titanium Nitride Films in the Epsilon‐Near‐Zero Region

Advanced Optical Materials, EarlyView.
The epsilon‐near‐zero (ENZ) effect in metals emerges only in nanometer‐scale films with exceptional optical quality. Titanium nitride (TiN) films grown by molecular beam epitaxy retain high crystallinity down to 2 nm and exhibit dramatically enhanced nonlinear optical responses near the ENZ region.
Fan‐Ting Tseng, I‐Hung Ho, Ting‐Jui Kuo, Shangjr Gwo, Igor V. Bondarev, Hyeyoung Ahn   +5 more
wiley   +1 more source

Highly Sensitive Pressure Transducer for Measuring Arterial Pulse Wave Velocity Based on Giant Magneto-Impedance Sensors. [PDF]

Sensors (Basel)
Benavides Cabrera LS, Costa da Silva E, Monteiro EC.   +2 more
europepmc   +1 more source

Cascading Spin‐Orbitronic Terahertz Emission in Ferromagnet/Nonmagnet Bilayers

Advanced Optical Materials, EarlyView.
While the initial generation mechanism of picosecond orbital currents remains elusive, we reveal a cascading spin–orbital transport mechanism that induces optically driven terahertz emission in ferromagnet/nonmagnet heterostructures. Using a ferromagnet with strong spin–orbit coupling, we identify a thickness‐driven transition from spin‐dominated to ...
Younghun Kim, Pinki Yadav, Byungwoo Son, Jooyoung Heo, Sejin Shin, Do‐Kyeong Ko, Rahul Mishra, Kyusup Lee   +7 more
wiley   +1 more source

Isotropic shrinkage of patterned vacancies enables three-dimensional nanoprecise metastructures for visible light applications. [PDF]

Nat Photonics
Yang Q, Yang G, Nambara T, Kusaka H, Kunai Y, Matlock AC, Swain C, Pryor B, Salamin Y, Oran D, Kariyawasam H, Hettiarachchi R, Wadduwage D, Soljačić M, So PTC, Boyden ES.   +15 more
europepmc   +1 more source

Enhancing gesture recognition for assisting visually impaired persons using deep learning in an IoT environment-based improved snake optimisation algorithm. [PDF]

Sci Rep
Mengash HA, Alqadi BS, Marzouk R.
europepmc   +1 more source