Results 101 to 110 of about 2,543,046 (278)

First demonstration of a low loss 37-cell hollow core photonic bandgap fiber and its use for data transmission

A low loss (4.5dB/km) 37-cell core HC-PBGF is reported for the first time. Detailed modal analysis using time of flight and S2 techniques, and error-free 40Gbit/s single mode data transmission are ...
Petrovich, M.N., Wong, N.H.L., Baddela, N.K., Jung, Y., Parmigiani, F., Richardson, D.J., Wheeler, N.V., Poletti, F., Numkam Fokoua, Eric, Hayes, J.R., Gray, D.R., Wooler, J.P.   +11 more
core   +1 more source

A Low‐Cost, Handheld Optical Stiffness Sensor for Minimally Invasive Surgery

Advanced Robotics Research, EarlyView.
A novel handheld stiffness sensor is presented for real‐time tissue stiffness characterization. By simultaneously sensing contact force and tissue deformation, the device enables accurate stiffness quantification without requiring precise manual control. This approach offers a promising solution for intraoperative tumor detection and minimally invasive
Qianyu Ma, Ruxiang Jiang, Kaspar Althoefer, Nicolas Herzig, Hareesh Godaba   +4 more
wiley   +1 more source

Advances and limitations in the modelling of fabricated photonic bandgap fibers

We model fabricated silica photonic bandgap fibers and achieve good agreement between simulated and measured properties. We identify the size of the SEM bitmap image as the ultimate limit to the accurate calculation of surfaces modes within the ...
Petrovich, M.N., Richardson, D.J., Monro, T.M., Poletti, F., Amezcua-Correa, R., Broderick, N.G.   +5 more
core   +2 more sources

A Transnasal Endoscope for Robotically Assisted Gastroscopy

Advanced Robotics Research, EarlyView.
This work introduces a 4.25 mm diameter magnetically navigated transnasal endoscope for upper gastrointestinal (GI) screening and intervention. The system enables precise remote steering throughout the upper GI tract and is demonstrated through in vitro and in vivo experiments, including the robotic execution of preprogrammed retroflexions, trans ...
Alexandre Mesot, Michelle Mattille, Sean Lyttle, Shannon M. Chan, Philip W. Y. Chiu, Quentin Boehler, Bradley J. Nelson   +6 more
wiley   +1 more source

High sensitive methane sensor based on a photonic bandgap fiber

Monitoring methane (CH) concentration is essential in many industrial and environmental applications. Hollow-core photonic bandgap fibers (HC-PBF) have emerged as a promising technology in the field of gas sensing.
Cubillas, Ana M., Lazaro, José M., Silva-Lopez, Manuel, Petrovich, Marco, Conde, Olga M., López-Higuera, José M.   +5 more
core   +1 more source

Hollow-core photonic bandgap fibers: technology and applications

Nanophotonics, 2013
Since the early conceptual and practical demonstrations in the late 1990s, Hollow-Core Photonic Band Gap Fibres (HC-PBGFs) have attracted huge interest by virtue of their promise to deliver a unique range of optical properties that are simply not ...
Poletti Francesco, Petrovich Marco N., Richardson David J.   +2 more
doaj   +1 more source

Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths

Advanced Science, EarlyView.
Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears, Kerrianne Harrington, Jonathan C. Knight, William J. Wadsworth, James M. Stone, Tim A. Birks   +5 more
wiley   +1 more source

Engineering Approaches to Modify Immunomodulatory Functions of Mesenchymal Stromal Cells (MSCs): Tissue Regeneration and Clinical Application

Advanced Science, EarlyView.
Mesenchymal stromal cells (MSCs) show promise for treating immune‐related disorders through immunomodulation and tissue regeneration. This review gives a brief overview of current clinical approval of MSC therapies. It also discussed how bioengineering, including genetic modification, biomaterial delivery, extracellular vesicles, and iPSC‐derived MSCs,
Sichen Yang, Kejia Li, Ning Wang, Zhen Li, Zhiyong Zhang, Rocky S. Tuan, Yangzi Jiang   +6 more
wiley   +1 more source

Toward Prostate Cancer Early Warning with a Self‐Powered Wearable Biosensing Platform Integrated with Machine Learning

Advanced Science, EarlyView.
ABSTRACT Current prostate cancer detection methods remain limited in non‐invasiveness and specificity, prompting interest in urinary biomarkers such as sarcosine. Here, we report a urine‐powered wearable platform for non‐invasive sarcosine detection as a proof‐of‐concept for decentralized early warning.
Jing Xu, Hanxiao Chen, Qichen Yuan, Liucun Yin, Yifang Tao, Hong Wang, Yuquan Xue, Delai Fu, Huan Pang, Tie Chong, Li Xue   +10 more
wiley   +1 more source

Delivery of Mid-infrared Femtosecond Laser by Chalcogenide Hollow-Core Fibers for Tissue Ablation

Ultrafast Science
High-intensity mid-infrared femtosecond lasers in the 5- to 11-μm spectral range flexibly delivered through fibers exhibit exceptional potential for biomedical applications due to their alignment with fundamental molecular vibrational modes. However, the
Yanjie Chang, Yantao Xu, Ang Deng, Hao Zhang, Jun Zhu, Jinmiao Guo, Chengzhen Liu, Xusheng Xiao, Yang Xiao, Chaoqi Hou, Houkun Liang, Yuxi Fu, Haitao Guo   +12 more
doaj   +1 more source