Results 71 to 80 of about 35,213 (236)

Enhancing Fiducial Point Detection in Imaging Photoplethysmography Through Spatial Fusion

Current Directions in Biomedical Engineering
Imaging photoplethysmography (iPPG) enables contactless assessment of blood volume changes but is susceptible to noise, particularly under impaired perfusion.
Tauber Samuel, Wiede Christian, Wichum Felix, Seidl Karsten   +3 more
doaj   +1 more source

The role of perceived security in the adoption of contactless technological innovation: Evidence from Spain’s airline and hospitality services

This study offers new empirical insights into how contactless technologies and customer experience shape technology adoption in post-pandemic tourism.
Recuero Virto, Nuria, Burkett, Mary Grace   +1 more
core   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

"Contactless" Developmental Psychology Methods

, 2020
A compendium of articles, videos, and links relating to Covid-era / "Contactless" research in developmental ...
Lauren Howard
core   +5 more sources

Comparative Analysis of Color Models for improved rPPG Signals in Remote Blood Pressure Measurement

Current Directions in Biomedical Engineering
The quality of remote photoplethysmography (rPPG) signals presents a significant challenge in contactless optical blood pressure measurement. Feature and morphologybased approaches heavily rely on subtle changes in signal characteristics, but rPPG ...
Wuerich Carolin, Heinrich Kira, Wiede Christian, Seidl Karsten   +3 more
doaj   +1 more source

Multidimensional and Multifunctional Laser‐Induced Graphene (LIG) for Point‐of‐Care and Wearable Biosensing, Theranostics, and Bioactive Interfaces Toward Personalized Healthcare and Regenerative Medicine

Advanced Science, EarlyView.
Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang, Yurou Yuan, Xiaohong Ding, Wing Cheung Mak   +3 more
wiley   +1 more source

Contactless Palmprint Recognition for Children

, 2023
Effective distribution of nutritional and healthcare aid for children, particularly infants and toddlers, in the world’s least developed and most impoverished countries, is a major problem due to lack of reliable identification documents.
Akash M Godbole, Steven A Grosz
core   +1 more source

An Ultrasonic Contactless Sensor for Breathing Monitoring

Sensors, 2014
The monitoring of human breathing activity during a long period has multiple fundamental applications in medicine. In breathing sleep disorders such as apnea, the diagnosis is based on events during which the person stops breathing for several periods ...
Philippe Arlotto, Michel Grimaldi, Roomila Naeck, Jean-Marc Ginoux   +3 more
doaj   +1 more source

Organoid Brain‐Machine‐Interface Devices for Central Nervous System Repair

Advanced Science, EarlyView.
We envision organoid brain‐machine‐interface (Organoid‐BMI) devices as new biohybrid bidirectional communication pathways to connect the human CNS and the external world for personalized CNS repair and regeneration. ABSTRACT Central nervous system (CNS) repair and regeneration suffer from tremendous clinical challenges due to current limitations in ...
Yantao Xing, Yang Yang, Zichen Hong, Chunhui Tian, Huiyu Chu, Susanne Clara Prokop, Hongwei Cai, Mingxia Gu, Jason Tchieu, Ken Mackie, Feng Guo   +10 more
wiley   +1 more source

Maximizing the Energy Output of Soft Electrohydraulic Generators

Advanced Science, EarlyView.
Many energy resources cannot be viably harvested with electromagnetic generators. This article evaluates the potential of soft electrohydraulic generators as an alternative approach for energy capture. An analytical model charts their operational limits and a rigorous experimental study results in new performance benchmarks with maximum specific energy
Sophie Kirkman, Ingemar Schmidt, Lawrence T. Smith, Steven L. Zhang, Shane K. Mitchell, Soo Jin Adrian Koh, Philipp Rothemund, Christoph Keplinger   +7 more
wiley   +1 more source