Results 161 to 170 of about 3,510,197 (304)

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

A Cryopreservation‐Based Supply Chain Strategy for Extrusion Bioprinting in Space

Advanced Materials Technologies, EarlyView.
Extrusion bioprinting on crewed space platforms requires a bioink that stays functional along the logistic chain. Here, cells and biomaterial ink travel separately, the cells cryopreserved and the ink cold stored, and are combined only minutes before printing.
Johannes Windisch, Max von Witzleben, Richard Frank Richter, Finn Dani, Constantin Greil, Sarah Duin, Anja Lode, Michael Gelinsky   +7 more
wiley   +1 more source

Covert underwater communication through cepstrum modulation mimicking Pseudorca crassidens whistles using machine learning. [PDF]

Sci Rep
Bilal M, Zuberi HH, Jaffar A, Riaz W, Khan MA, Alharbi A, Miyajan A, Liu S.   +7 more
europepmc   +1 more source

Omnidirectional Ultra‐Broadband Cu/TiO2 Metasurface Absorbers for High‐Efficiency Solar Thermal Conversion and Photothermal Plasmon‐Driven Catalysis

Advanced Optical Materials, EarlyView.
Metasurface shows selective solar–thermal energy conversion with high‐activity solar/laser‐driven chemistry. The breakthrough is co‐designing broadband FP‐cavity + plasmonic LSPR/SLR resonances in an ultra‐thin metamaterial so that it not only harvests the most efficient proportion of solar radiation but also suppresses mid and IR emissivity. Moreover,
Samira Mehrabi, HaoYu Zhang, Narendra Chaulagain, Edgar Acosta, Nazir P. Kherani   +4 more
wiley   +1 more source

Modulation of Visual Contrast Perception Associated With Dorsal Attention Network Connectivity Assessed by Magnetoencephalography. [PDF]

Hum Brain Mapp
Sklar AL, Coffman BA, López-Caballero F, Seebold D, Kocsis J, Fowler L, Rhorer H, Kavanagh J, Salisbury DF.   +8 more
europepmc   +1 more source

Nanoporous Scaffold‐Assisted Ligand‐Free CsPbBr3 Quantum Dots for Bright and Ultrapure Green Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Networks of confined CsPbBr3 perovskite quantum dots, synthesised within nanoporous silica scaffolds using precursors containing different combinations of butylammonium bromide and crown ether additives, enable electroluminescent devices with 400‐fold enhanced charge injection and transport with respect to control devices, yielding ultrapure green ...
Carlos Romero‐Pérez, Zhongcheng Yuan, Mauricio E. Calvo, Henry J. Snaith, Hernán Míguez   +4 more
wiley   +1 more source

Balancing positive and negative luminescence for thermoradiative signatureless communications. [PDF]

Light Sci Appl
Nielsen MP, Maier SA, Fuhrer MS, Ekins-Daukes NJ.   +3 more
europepmc   +1 more source

Minecraft tunnels for covert communications

Entertainment Computing
Nathan Tusing, Jonathan Oakley 0001, Chunpeng Shao, Lu Yu 0001, Richard R. Brooks   +4 more
openaire   +1 more source

Two‐Dimensional Isotropic Spatial Differentiation Through Complete Polarization Control

Advanced Optical Materials, EarlyView.
This work enables two‐dimensional isotropic spatial differentiation at planar interfaces over a wide range of incident angles by extending the output polarization from linear to elliptical. The choice of incident angle can be used to balance broader spectral response at low angles and higher edge‐detection efficiency at larger angles.
Doyoon Lee, Minkyung Kim
wiley   +1 more source

Physician experiences and perceptions of patient-initiated recording in emergency departments: a multi-center survey in Southwestern China. [PDF]

BMC Med Ethics
Jin B, Liang LJ, Xu CX, Sha A, Liu WK, Peng HR, Gan YC, Gao JY, Liu ZH, Zhang SY, Lu D, He YR.   +11 more
europepmc   +1 more source