Results 111 to 120 of about 3,338 (308)

Reconfigurable dielectric resonator antennas.

, 2012
Thesis (M.E.)--American University of Beirut, Department of Electrical and Computer Engineering, 2012.Advisor : Prof. Karim Kabalan, Chairperson, Electrical and Computer Engineering --Members of Committee: Prof.
Abou Shahine, Mohamad Youssef.
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Rotated Half-Mode Substrate Integrated Waveguide and other Planar Integrated Structures [PDF]

, 2015
High data rate communication channels are becoming more and more integrated into our increasingly technological society. Substrate Integrated Waveguides (SIW) are one planar solution available to the microwave engineer, offering a low-loss and low ...
Farrall, Andrew J
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Near‐Unity Chiral Lasing Enabled by Quasi‐Bound States in the Continuum

Advanced Materials, EarlyView.
Nanoimprinted chiral array that supports bound states in the continuum is doped with an efficient non‐chiral molecule (Rhodamine‐B) acting as gain medium to produce fully circularly polarized lasing emission. The chiral lasing wavelength can be tuned across the emission band of Rhodamine‐B by adjusting the coating thickness of the TiO2 high refractive ...
Jose Mendoza‐Carreño, Luis A. Pérez, Carlota Ruiz De Galarreta, Théo Rouanet, M. Isabel Alonso, Agustín Mihi   +5 more
wiley   +1 more source

Comparison between an optical dielectric resonator nano-antenna reflectarray and an equivalent dielectric grating reflector

, 2013
Conventional metallic nanoantennas suffer significant energy dissipation introduced by Drude metals in the optical frequency range. To overcome this limitation, optical dielectric resonator antenna (DRA) was proposed and demonstrated through a ...
Shah, C., Sriram, S., Christophe Fumeaux, Madhu Bhaskaran, Withayachumnankul, W., Mitchell, A., Longfang Zou, Bhaskaran, M., Zou, L., Charan Shah, Sharath Sriram, Fumeaux, C., Withawat Withayachumnankul, Arnan Mitchell   +13 more
core   +1 more source

Intimate Interaction Between Nucleic Acid and Conjugated Polymers in Organic Electrochemical Transistors Enables Ultrasensitive Biomarker Detection

Advanced Materials, EarlyView.
The intimate interaction between negatively charged RNA molecules and conjugated polymers in organic electrochemical transistors (OECTs) in aqueous electrolytes is investigated. It demonstrates that RNA binding reduces the volumetric capacitance of the polymer channel, enabling the development of an ultrasensitive biosensing platform capable of ...
Hong Liu, Naixiang Wang, Anneng Yang, Jiajun Song, Li Li, Iain McCulloch, Helen Ka‐wai Law, Feng Yan   +7 more
wiley   +1 more source

Nocturnal Intraocular Pressure Monitoring With a Soft Contact Lens Sensor for Glaucoma Management

Advanced Materials, EarlyView.
A soft contact lens sensor enables continuous, noninvasive monitoring of nocturnal intraocular pressure (IOP) under closed‐eye sleep conditions. By integrating a highly compliant inductive–capacitive circuit onto a commercial lens, the device achieves record sensitivity and stable performance.
Yumin Dai, Tristan Michael Long, Oluwabunmi T. Oladele, Youngoh Lee, Feiyang Li, Ziheng Wang, Yeonji Oh, Junsang Lee, Taewoong Park, Tianhao Yu, Seokkyoon Hong, Kyeonghee Lim, Jinheon Jeong, Dawn Meyer Schneider, Hyerim Ra, Bryan W. Boudouris, Gillian C. Shaw, Shin Ae Park, Pete S. Kollbaum, Chi Hwan Lee   +19 more
wiley   +1 more source

Phased Array Scan Performance Review for SATCOM: Dielectric Resonator vs. Patch Antennas [Elektronisk resurs]

A comparison of arrays employing dielectric resonator antennas (DRA) and patch antennas as elements is presented. The bandwidth of the arrays under study is over 40% at broadside, covering the K/Ka-band SATCOM and mmWave 5G bands. The element analysis is
Pavlidis, Theodoros,, Ivashina, Marianna,, Kishk, Ahmed,, Vilenskiy, Artem,, Schäfer, Thomas,   +4 more
core   +1 more source

Measuring and Manipulating Density of States in Two‐Dimensional Materials With Electrochemical Capacitance

Advanced Materials Interfaces, EarlyView.
We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan, Mitchell Kaiser, Maria L. Sushko, Xiaobin Liao, Hao Tang, Chun‐Chih Tseng, Matthew Yankowitz, Ying Xia, Jihui Yang, Jun Liu   +9 more
wiley   +1 more source

BioEISense: A Microfluidic Platform for Real‐Time Monitoring of Staphylococcus aureus Biofilm Formation and the Efficacy of Antibiofilm Agents

Advanced Materials Interfaces, EarlyView.
BioEISense is a microfluidic device with integrated impedance sensors, for real‐time, label‐free monitoring of S. aureus biofilms. In this study, the biofilm culture conditions were optimized to support sensitive and reproducible detection of biofilm formation and eradication under dynamic flow‐through conditions. The system was also validated for both
Jéssica Amorim, Laura Vesalainen, Loïc Dreano, Markus Haapala, Cristina D. Cruz, Päivi Tammela, Tiina M. Sikanen   +6 more
wiley   +1 more source

Broadband dielectric resonator antennas for WLAN applications [PDF]

, 2009
Today's communications systems require use of broadband antennas to meet high capacity requirements. Furthermore, some applications require smaller antenna sizes.
Abumazwed, Ahmed
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