Results 71 to 80 of about 22,533 (285)

Stretchable and wearable colorimetric patches based on thermoresponsive plasmonic microgels embedded in a hydrogel film [PDF]

, 2018
Stimuli-responsive colorimetric sensors are promising for various industrial and medical applications due to the capability of simple, fast, and inexpensive visualization of external stimuli.
A González, A Kristensen, Gwangmook Kim, H Ko, H Lee, H Wang, H Xing, H Yuk, J Cheng, J Franklin, J Wei, JE Song, JJ Mock, K Durme Van, K Otake, KA Willets, L Gao, L Guo, LV Sigolaeva, M Chen, M Das, NA Rakow, NG Bastús, S Chae, S Lim, S Maji, S Mura, S Nakata, S Tokunaga, SK Ghosh, SS Evans, T Ding, T Kim, TQ Trung, X Ren, Y Chen, Y Liu, Y Yamamoto, Y Yan, YJ Jin   +39 more
core   +2 more sources

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Detection of edible oil types based on nanocolorimetric sensor technology

Shipin yu jixie
ObjectiveTo develop a nanocolorimetric sensor array for identifying different types of edible oils.MethodsThe colorimetric sensor array was composed of chemically responsive dyes and modified with porous silica nanospheres (PSNs) to improve its ...
HUANG Xing, LI Dapeng, WEN Tao, HE Zhou
doaj   +1 more source

Artificial olfactory sensor technology that mimics the olfactory mechanism: a comprehensive review

Biomaterials Research, 2022
Artificial olfactory sensors that recognize patterns transmitted by olfactory receptors are emerging as a technology for monitoring volatile organic compounds.
Chuntae Kim, Kyung Kwan Lee, Moon Sung Kang, Dong-Myeong Shin, Jin-Woo Oh, Chang-Soo Lee, Dong-Wook Han   +6 more
doaj   +1 more source

Wearable Device for Cumulative Chlorobenzene Detection and Accessible Mitigation Strategies

Sensors, 2023
Chronic exposure to low concentrations of volatile organic compounds (VOCs), such as chlorobenzene, is not being monitored in industrializing countries, although VOC exposure is associated with carcinogenic, organ-toxic, and endocrine-disrupting effects.
Aryan Mago, Yeon-Suk Yang, Jae-Hyuck Shim, Aijaz Ahmad John   +3 more
doaj   +1 more source

Electrically Readable Lateral Flow Assay Using Organic Transistors for Diagnostic Applications

Advanced Materials, EarlyView.
Electrolyte‐gated organic field‐effect transistors (EGOFETs) are integrated with lateral flow (LF) paper fluidics to create a reusable, portable, and low‐cost point‐of‐care (PoC) diagnostic test. The devices are validated for Human Immunoglobulin G detection, achieving high sensitivity (0.1 fm), selectivity, and reproducibility with rapid results in 20–
María Jesús Ortiz‐Aguayo, Carme Martínez‐Domingo, Diego Gutiérrez, Dean Kos, Marta Mas‐Torrent   +4 more
wiley   +1 more source

A Colorimetric Sensor for Qualitative Discrimination and Quantitative Detection of Volatile Amines

Sensors, 2010
We have developed a novel colorimetric sensor based on a digital camera and white LED illumination. Colorimetric sensor arrays (CSAs) were made from a set of six chemically responsive dyes impregnated on an inert substrate plate by solution casting.
Zhonglin Tang, Jianhua Yang, Junyun Yu, Bo Cui   +3 more
doaj   +1 more source

Giant Magnetoresistive Biosensors for Time-Domain Magnetorelaxometry: A Theoretical Investigation and Progress Toward an Immunoassay. [PDF]

, 2017
Magnetorelaxometry (MRX) is a promising new biosensing technique for point-of-care diagnostics. Historically, magnetic sensors have been primarily used to monitor the stray field of magnetic nanoparticles bound to analytes of interest for immunoassays ...
Hall, Drew A, Huang, Chih-Cheng, Zhou, Xiahan   +2 more
core   +1 more source

Colorimetric sensor arrays: development and application to art conservation [PDF]

Journal of the American Institute for Conservation, 2018
Acceptable air pollutant concentration limits for sensitive artwork are generally at or below a few ppb: this is only ∼1% of the permissible exposure limits for humans. Monitoring pollutants at such low levels is an exceptional challenge, especially to do so in a cost-effective fashion for a large number of locations and microenvironments (e.g., every ...
Maria K. LaGasse, Kristen McCormick, Zheng Li, Herant Khanjian, Michael Schilling, Kenneth S. Suslick   +5 more
openaire   +1 more source

Digital Microneedles for Multiplexed Transdermal Sensing via Fluorescent QR Codes

Advanced Materials, EarlyView.
Digital fluorescent microneedles encode biochemical information in skin into scannable QR codes through threshold‐activated probes that generate binary on/off signals. By transforming analog fluorescence into discrete digital patterns, this platform enables calibration‐free, multiplexed transdermal sensing of physiologically relevant biomarkers ...
Farbod Abazar, Shahrokh Vahabi, Elena Bellotti, Martina Corsi, Irene Nocera, Paola Orlandi, Guido Bocci, Giuseppe Barillaro   +7 more
wiley   +1 more source