Results 131 to 140 of about 60,070 (308)

Bipolar Optical Code Division Multiple Access Techniques Using a Dual Electro-Optical Modulator Implemented in Free-Space Optics Communications. [PDF]

Sensors (Basel), 2020
Tseng SP, Wijanto E, Lai PH, Cheng HC.
europepmc   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

BER performance of DPSK subcarrier modulated free space optics in fully developed speckle [PDF]

, 2008
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, W.O. Popoola, Z. Ghassemlooy, E. Leitgeb, Leitgeb, Erich   +5 more
core   +1 more source

Free space optical interconnects for speckled computing

, 2009
The aim of this project was to produce an integrate-able free space optical transceiver for Specks. Specks are tiny computing units that together can form a powerful network called a SpeckNet.
Reardon, Christopher P.
core  

Using Quantum Key Distribution With Free Space Optics to Secure Communications in High-Speed Trains

IEEE Access
In the emerging era of quantum communications, Internet of Things (IoT) devices in high-speed train (HST) environments encounter formidable challenges.
Hasan Abbas Al-Mohammed, Elias Yaacoub, Khalid Abualsaud, Somaya Ali Al-Maadeed   +3 more
doaj   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

Subcarrier intensity modulated free-space optical communication systems

This thesis investigates and analyses the performance of terrestrial free-space optical communication (FSO) system based on the phase shift keying pre-modulated subcarrier intensity modulation (SIM).
Popoola, Wasiu Oyewole
core  

Intermediate stations for the transfer of high power laser beams into free space

, 2023
reservedThe study of the propagation of laser beams into free space is of interest for a number of modern applications, such as free space optics communications and laser power beaming.
LARICCIA, ETTORE
core  

A Silicon Photonic 32-Input Coherent Combiner for Turbulence Mitigation in Free Space Optics Links

IEEE Access
Free space optical links promise high data rates for future wireless communications systems, but performance is degraded by turbulence, limiting the potential use cases.
Lorenzo de Marinis, Peter Seigo Kincaid, Yann Lucas, Lea Krafft, Vincent Michau, Matteo Cherchi, Mikko Karppinen, Giampiero Contestabile   +7 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source