Results 51 to 60 of about 1,630 (197)

Photodoping in Wide‐Bandgap Perovskite Solar Cells With MXenes

Advanced Optical Materials, EarlyView.
Ultrafast tandem spectroscopy and DFT modeling reveal the separate dynamics and the imbalance of electrons and holes in wide bandgap perovskite solar cells with MXene incorporation. The enhanced photoconversion performances of the devices are traced to photodoping, with selective hole trapping and suppressed recombination of electrons.
Angelica Simbula, Antonio Agresti, Sara Pescetelli, Sofia Sechi, Nicola Sestu, Francesco Mattana, Federico Pitzalis, Riccardo Pau, David Dell'Angelo, Alessio Filippetti, Alessandro Mattoni, Anna Pazniak, Daniela Marongiu, Valeria Demontis, Francesco Quochi, Michele Saba, Andrea Mura, Giovanni Bongiovanni   +17 more
wiley   +1 more source

Investigating Low Latency Communications With Link-Layer Rate of NOMA Under Nakagami-m Fading Channel in Finite Blocklength Regime

IEEE Access
This paper investigates link-layer rate of two-user downlink non-orthogonal multiple access (NOMA) networks under Nakagami-m fading channel with short packet communications.
Muhammad Imran, Muhammad Amjad, Muhammad Khalil Afzal, Muhammad Usman, Byung-Seo Kim   +4 more
doaj   +1 more source

Electrohydrodynamically Driven Broadband and Color‐Shifting in Cholesteric Liquid Crystals

Advanced Optical Materials, EarlyView.
Ion‐driven electrohydrodynamic effects enable dynamic photonic bandgap modulation in cholesteric liquid crystals under low‐frequency AC driving. By regulating ion‐mediated disturbance of the helical structure, this approach produces two reversible optical responses: rapid color shifting across the visible spectrum and broadband reflection spanning the ...
Cheng‐Kuan Wu, Jin‐Yu Chen, Li‐Min Chang, Cheng‐Chang Li, Kuan‐Wu Lin, Duan‐Yi Guo, Tsung‐Hsien Lin   +6 more
wiley   +1 more source

When the small is beautiful: five years publishing short communications

Entomological Communications
Since the publication of the first issue in 2019, Entomological Communications has been publishing original and current short communications of basic and applied research in all areas of Entomology (including acarology and related arthropods ...
Daniell R. R. Fernandes, Rafael M. Pitta
doaj   +1 more source

Eco‐Designed Transparent Bacterial Cellulose Composites for Next‐Generation Opto‐Electronics

Advanced Optical Materials, EarlyView.
The developed transparent bacterial cellulose (BC) composite film using bio‐based resin results in higher transparency (89%) and lower haze (12%) at 550 nm, combined with insulative, hydrophobic and mechanically robust properties, thereby, enabling successful fabrication of an electrochromic device with efficient optical modulation on a sustainable ...
Liya Antony, Sanosh Kunjalukkal Padmanabhan, Amal Alliyankal Vijayakumar, Marco Pugliese, Maria Assunta Signore, Antonella Giuri, Vincenzo Maiorano, Antonio Licciulli, Sonia Carallo, Aurora Rizzo, Carola Esposito Corcione   +10 more
wiley   +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

ARQ-Enhanced Short-Packet NOMA Communications with STAR-RIS

Telecom
To address the rigorous requirements of ultra-reliable low-latency communication (URLLC) in beyond 5G/6G networks, we propose an innovative architecture combining automatic repeat request (ARQ) protocol with a simultaneously transmitting and reflecting ...
Zhipeng Wang, Jin Li, Shuai Zhang, Dechuan Chen   +3 more
doaj   +1 more source

Flexible and Scalable 2D/3D Tin‐Based Perovskite Photodetectors via Inkjet Printing

Advanced Optical Materials, EarlyView.
Lead‐free tin‐based perovskite films are successfully fabricated via scalable inkjet printing on rigid and flexible substrates. Incorporating high‐purity precursors and dual‐layer encapsulation minimizes defects and eliminates oxidation. The resulting photodetectors demonstrate high responsivity, persistent photoconductivity, and excellent 30 day ...
Giovanni Vescio, Vladimir S. Chirvony, Isaac Suárez, Sandra Soriano, Jesús Sanchez‐Diaz, Wiktor Żuraw, Łukasz Przypis, Senol Öz, Kenneth Lobo, Sergi Hernández, Albert Cirera, Iván Mora‐Seró, Blas Garrido, Juan P. Martínez‐Pastor   +13 more
wiley   +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

Short Communications: Clinical Sciences

RUHS Journal of Health Sciences, 2023
Postgraduate Students
doaj   +1 more source