Results 71 to 80 of about 7,494 (288)

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

Advanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Multi-Feed Holographic-Based Leaky Wave Antennas for MIMO-Radar Applications

IEEE Journal of Microwaves
This paper presents the integration and experimental validation of a multi-feed holographic-based leaky wave antenna (HLWA) array into an automotive MIMO radar system.
Thomas Frey, Nico Riese, Dominik Schwarz, Maximilian Doring, Christian Waldschmidt, Tobias Chaloun   +5 more
doaj   +1 more source

Unveiling Magnetic Dipole Radiation in Phase-Reversal Leaky-Wave Antennas [PDF]

, 2013
The radiation principle of travelling-wave type phase-reversal antennas is explained in details, unveiling the presence of magnetic-dipole radiation in addition to well-known electric dipole radiation.
Caloz, Christophe, Gupta, Shulabh, Jiang, Li Jun   +2 more
core   +3 more sources

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source

Full‐angle beam scanning leaky‐wave antenna array based on spoof surface plasmon polaritons

IET Microwaves, Antennas & Propagation
A design scheme of high‐gain and full‐angle frequency beam scanning leaky wave antenna (LWA) and array is proposed based on spoof surface plasmon polaritons (SSPPs) slow‐wave transmission line (TL) for radar field applications.
Jun Wang, Yuqi Yao, Xianglin Kong, Ruofeng Xu, Lei Zhao   +4 more
doaj   +1 more source

Performance analysis of a low cost wireless indoor positioning system with distributed antennas [PDF]

Advances in Radio Science, 2011
In this paper an approach for indoor localization based on already installed communication transceiver infrastructure is presented. Only marginal additional hardware is required to implement the localization functionality.
A. T. Ott, M. Shalaby, U. Siart, E. Kaliyaperumal, T. F. Eibert, J. Engelbrecht, R. Collmann   +6 more
doaj   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

Advanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang, Byeongseok Ryu, Sujeong Ahn, Junhyub Kim, Myeonghun Jang, Jeong Ho Cho, Won‐Gun Koh, Hyungsuk Lee   +7 more
wiley   +1 more source

Exotic leaky wave radiation from anisotropic epsilon near zero metamaterials

, 2011
We investigate the emission of electromagnetic waves from biaxial subwavelength metamaterials. For tunable anisotropic structures that exhibit a vanishing dielectric response along a given axis, we find remarkable variation in the launch angles of energy
Feng, Simin, Halterman, Klaus, Nguyen, Viet Cuong   +2 more
core   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Low-damping epsilon-near-zero slabs: nonlinear and nonlocal optical properties

, 2013
We investigate second harmonic generation, low-threshold multistability, all-optical switching, and inherently nonlocal effects due to the free-electron gas pressure in an epsilon-near-zero (ENZ) metamaterial slab made of cylindrical, plasmonic ...
Campione, Salvatore, Capolino, Filippo, de Ceglia, Domenico, Scalora, Michael, Vincenti, Maria Antonietta   +4 more
core   +2 more sources