Results 71 to 80 of about 72,708 (276)

DeepMasterPrints: Generating MasterPrints for Dictionary Attacks via Latent Variable Evolution

open access: yes, 2018
Recent research has demonstrated the vulnerability of fingerprint recognition systems to dictionary attacks based on MasterPrints. MasterPrints are real or synthetic fingerprints that can fortuitously match with a large number of fingerprints thereby ...
Bontrager, Philip   +4 more
core   +1 more source

A dual-mass capacitive-readout accelerometer operated near pull-in [PDF]

open access: yes, 2010
A mechanical two-mass configuration and a readout circuit for a single-axis capacitive-readout accelerometer with ΣΔ force-feedback is presented. The system reduces electrical and quantisation input-referred noise through the use of negative springs ...
De Baets, Patrick   +4 more
core   +2 more sources

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán   +13 more
wiley   +1 more source

Upper limits on stray force noise for LISA

open access: yes, 2003
We have developed a torsion pendulum facility for LISA gravitational reference sensor ground testing that allows us to put significant upper limits on residual stray forces exerted by LISA-like position sensors on a representative test mass and to ...
A Cavalleri   +15 more
core   +2 more sources

Robust capacitive pressure sensor array

open access: yesSensors and Actuators A: Physical, 1998
Abstract Much of the cost of commercial micromachined pressure sensors lies in the package that houses the device itself. If a robust material is used for the substrate of the sensors as well as the packaging material, i.e. fabricating the sensor on the package itself, cost savings for the overall system may accrue.
J.-B. Lee, S.-P. Chang, M.G. Allen
openaire   +1 more source

Transparent Inorganic–Organic Bilayer Neural Electrode Array and Integration to Miniscope System for In Vivo Calcium Imaging and Electrophysiology

open access: yesAdvanced Functional Materials, EarlyView.
This study presents the BioCLEAR system, a highly transparent and conductive neural electrode array composed of silver nanowires (AgNWs) and doped PEDOT:PSS, enabling neural recordings with minimal optical artifacts. When integrated with a GRIN lens, this cost‐effective neural implant allows simultaneous electrophysiological recording and GCaMP6‐based ...
Dongjun Han   +17 more
wiley   +1 more source

Electromagnetic coupling simulagions for a magnetic induction sensor for sleep monitoring [PDF]

open access: yes, 2014
Magnetic induction (MI) method has been extensively used in non-destructive testing of materials. In biomedical applications, it attracted lots of attention for the contact-less advantages it provides.
Mahdavi, Hadiseh   +1 more
core  

Finite element modelling of electrostatic fields in process tomography capacitive electrode systems for flow response evaluation [PDF]

open access: yes, 1993
Various aspects and results of 2-D finite element (FE) modeling of electrostatic fields in 12-electrode capacitive systems for two-phase flow imaging are described. The capacitive technique relies on changes in capacitances between electrodes (mounted on
Abdullah, F., Khan, S.
core   +1 more source

Miniature Nanomesh Mechano‐Acoustic Sensor with Wide Linear Dynamic Range, Broad Bandwidth, and Flat Frequency Response

open access: yesAdvanced Functional Materials, EarlyView.
A miniaturized mechano‐acoustic sensor is developed using an electrospun PVDF nanomesh as the diaphragm in a capacitive sensor structure. Unlike conventional nanomesh‐based sensors, it achieves high linear sensitivity, a broad and flat frequency response, and a compact form factor.
Jeng‐Hun Lee   +8 more
wiley   +1 more source

A flexible P(VDF-TrFE)/MXene-based pressure sensor for breath and posture monitoring in football motion

open access: yesAIP Advances, 2023
Flexible capacitive pressure sensors are becoming increasingly significant in wearable electronic devices. The conventional form of pressure sensors, however, focuses primarily on microstructure design. While this approach can enhance sensitivity, it can
Mingjie He
doaj   +1 more source

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