Results 51 to 60 of about 849,567 (246)

Toward Perception‐Native Electronic Skin: Bio‐Inspired In‐/Near‐Sensor and Neuromorphic Computing for Humanoid Robots

Advanced Materials Technologies, EarlyView.
Dense tactile streams from across the humanoid body converge on collide in a central wiring and data bottleneck. By relocating computation closer to and then into the skin itself, near‐ and in‐sensor architectures, together with neuromorphic computing, chart a path toward perception‐native electronic skin, in which the conversion of stimulus into ...
Mijin Kim, Chang‐Jae Beak, Jiyoung Park, Youngdo Jung, Sunjong Oh, Sin‐Hyung Lee, Bo‐Yeon Lee   +6 more
wiley   +1 more source

All-optical 160 Gbit/s retiming system using fiber grating based pulse shaping technology [PDF]

, 2009
This paper demonstrates a retiming system operating at rates of 40 and 160 Gbit/s, which incorporates a superstructured fiber Bragg grating (SSFBG) as a pulse shaping element.
Galili, Michael, Ibsen, M., Petropoulos, P., Ibsen, Morten, Richardson, D.J., Richardson, David J., Zibar, Darko, Parmigiani, Francesca, Clausen, Anders, Petropoulos, Periklis, Oxenløwe, Leif Katsuo, Parmigiani, F., Clausen, Anders Thomas, Jeppesen, Palle, David J. Richardson, Darko Zibar, Francesca Parmigiani, Palle Jeppesen, Morten Ibsen, Periklis Petropoulos, Michael Galili, Leif Katsuo Oxenlowe, Anders Thomas Clausen   +22 more
core   +2 more sources

Optical Bend Sensor Based on Eccentrically Micro-Structured Multimode Polymer Optical Fibers

IEEE Photonics Journal, 2021
We report on a novel bend sensor with high flexibility and elasticity based on Bragg grating structures in polymer optical fibers to detect bending for the measurement of movement.
Lennart Leffers, Julia Locmelis, Kort Bremer, Bernhard Roth, Ludger Overmeyer   +4 more
doaj   +1 more source

Microscale 3D‐Printed Digital Strain Switches for Embedded Mechanical Computation

Advanced Materials Technologies, EarlyView.
Microscale 3D‐printed strain switches on flexible films convert deformation into native digital signals at geometry defined thresholds. A closed form model predicts switching from 3000 to 15 000 microstrain and is validated across 110 devices. Reliable ohmic closure and strain activated AND, OR, and XOR logic point toward low‐power mechanical ...
Regan Kubicek, Daniel Quinn, Gabriel Smith, Sarah Bergbreiter   +3 more
wiley   +1 more source

Microstructure-Based Fiber-To-Chip Coupling of Polymer Planar Bragg Gratings for Harsh Environment Applications

Sensors, 2020
This article proposes and demonstrates a robust microstructure-based fiber-to-chip coupling scheme for planar Bragg grating devices. A polymer planar Bragg grating substrate is manufactured and microstructured by means of a micromilling process, while ...
Stefan Kefer, Theresia Sauer, Steffen Hessler, Michael Kaloudis, Ralf Hellmann   +4 more
doaj   +1 more source

Dielectric Permittivity Tensor of Muscovite for Next Generation All Van Der Waals Broadband Photonic Components

Advanced Optical Materials, EarlyView.
Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan, Maksim L. Sargsyan, Davit A. Karakhanyan, Ani P. Khachatryan, Maria A. Levonyan, Dmitrii Litvinov, Maciej Koperski, Artsruni V. Margaryan, Makars Šiškins, Konstantin S. Novoselov, Davit A. Ghazaryan   +10 more
wiley   +1 more source

A Magnetostrictive Composite-Fiber Bragg Grating Sensor [PDF]

Sensors, 2010
This paper presents a light and compact optical fiber Bragg Grating sensor for DC and AC magnetic field measurements. The fiber is coated by a thick layer of a magnetostrictive composite consisting of particles of Terfenol-D dispersed in a polymeric matrix.
Quintero, Sully M. M., Braga, Arthur M. B., Weber, Hans I., Bruno, Antonio C., Araújo, Jefferson F. D. F.   +4 more
openaire   +4 more sources

From Rigid to Soft Robotic Approaches for Neuroendoscopy

Advanced Robotics Research, EarlyView.
Robotic assistance has had minimal impact on deep intraventricular surgeries, where small‐scale, precision, and reduced invasiveness can contribute to improved patient outcomes. Emerging technologies in rigid, soft, and hybrid robotics are reviewed to identify the most promising mechanisms for deep brain navigation in addition to an attempt to identify
Kieran Gilday, Irena Zubak, Andreas Raabe, Josie Hughes   +3 more
wiley   +1 more source

Study of Optical Fiber Sensors for Cryogenic Temperature Measurements

Sensors, 2017
In this work, the performance of five different fiber optic sensors at cryogenic temperatures has been analyzed. A photonic crystal fiber Fabry-Pérot interferometer, two Sagnac interferometers, a commercial fiber Bragg grating (FBG), and a π-phase ...
Veronica De Miguel-Soto, Daniel Leandro, Aitor Lopez-Aldaba, Juan Jesus Beato-López, José Ignacio Pérez-Landazábal, Jean-Louis Auguste, Raphael Jamier, Philippe Roy, Manuel Lopez-Amo   +8 more
doaj   +1 more source

Nanosecond switching of fiber Bragg gratings

Optics Express, 2007
A FBG was written in a two-hole fiber with internal alloy electrodes. Nanosecond high current pulses cause metal expansion, increase birefringence and tune the gratings with a response time of 29 ns. This short length, low loss, all-spliced high-speed wavelength switching devices described here has potential use in Q-switching fiber laser.
Zhangwei, Yu, W, Margulis, O, Tarasenko, H, Knape, P-Y, Fonjallaz   +4 more
openaire   +2 more sources