Results 41 to 50 of about 14,231 (229)

Conductometric Gas Nanosensors [PDF]

Journal of Sensors, 2009
This paper presents a review of the current research activities in the field of gas nanosensors. Nanomaterials are characterized by physical and chemical properties that differ from their macroscopic counterparts and, in particular, by an enhanced chemical reactivity even at room temperature.
Girolamo Di Francia, Brigida Alfano, Vera La Ferrara   +2 more
openaire   +2 more sources

Interstitial fluid-based optical biosensors

Journal of Pharmaceutical and Biomedical Analysis Open
The high reproducibility and reliability of optical biosensors, alongside the extraordinarily features of interstitial fluid (ISF) as a promising biological fluid with blood-like composition and yet noninvasive or minimally invasive sampling, have led to
Atefeh Rahimzadeh, Abrisham Arjomandkhah, Mohammad Ali Kiani, Hamed Golmohammadi   +3 more
doaj   +1 more source

Fluorescent nanosensors reveal dynamic pH gradients during biofilm formation

npj Biofilms and Microbiomes, 2021
Understanding the dynamic environmental microniches of biofilms will permit us to detect, manage and exploit these communities. The components and architecture of biofilms have been interrogated in depth; however, little is known about the environmental ...
Birte Hollmann, Mark Perkins, Veeren M. Chauhan, Jonathan W. Aylott, Kim R. Hardie   +4 more
doaj   +1 more source

Nanosensors for Foods

, 2020
Nanotechnology, as being a branch of science taking the advantage of the unique chemical and physical properties of matter on the nanoscale, has a great potential of application in food systems, including the development of effective and innovative ...
Seda Uzunboy, Asli Neslihan Avan, Toydemir, Gamze, Sema Demirci Cekic, Avan, Aslı Neslihan, Gamze Toydemir, Esra Capanoglu, Gulay Ozkan, Çekiç, Sema Demirci, Özkan, Gülay, Çapanoğlu, Esra, Apak, Reşat, Uzunboy, Seda, Resat Apak   +13 more
core   +1 more source

Au–Nitrogen-Doped Graphene Quantum Dot Composites as “On–Off” Nanosensors for Sensitive Photo-Electrochemical Detection of Caffeic Acid

, 2020
Herein, gold–nitrogen-doped graphene quantum dot (Au/NGQD) composite modified electrodes were fabricated and applied as “on–off” nanosensors for the photo-electrochemical (PEC) detection of caffeic acid under visible-light ...
Jiaqi He, Jin Wang, Yukou Du, Qiyuan Zhao, Lin Zhou, Yong Yao, Weichun Huang, Xue Li, Yan Cai, Tingting Chen   +9 more
core   +1 more source

NANOSENSORS BASED ON INDIVIDUAL HYBRID STRUCTURES AND THEIR APPLICATION IN GAS SENSING AT ROOM TEMPERATURE [PDF]

Journal of Engineering Science (Chişinău), 2020
Because the commercialization of nanosensors in the field of gas sensing is still in its infancy, many efforts have been made to develop efficient methods to increase their performances. A special attention was paid to the increase of the sensitivity and
POSTICA, Vasile, RASCH, Florian, SCHÜTT, Fabian, ADELUNG, Rainer, LUPAN, Oleg   +4 more
doaj   +1 more source

DUNI: A Portable Smartphone-Coupled Integrating Sphere for Controlled Illumination and Reliable Colorimetric Sensing: Analytical Applications

Sensors
The use of smartphones as analytical instruments is becoming increasingly widespread due to their ease of use and low cost. However, it has limitations, such as dependence on the smartphone’s sensor, the light source and the environment, which hinders ...
Pablo Cebrián, José Manuel Escuín, Jesús Salafranca, Carmen Jarne, Ángel López-Molinero, Susana de Marcos, Javier Galbán, Isabel Sanz-Vicente   +7 more
doaj   +1 more source

High‐Efficiency Quantum Defect Generation in Carbon Nanotubes via Oxygen‐Free Photochemistry

Advanced Functional Materials, EarlyView.
We show that oxygen plays an important role in quantum defect formation in carbon nanotubes and identify reaction conditions to create a range of different quantum defects for photonics and biosensing. ABSTRACT Single‐walled carbon nanotubes (SWCNTs) offer potential for a wide range of applications from optoelectronic devices to biomedical diagnostics.
Christina Derichsweiler, Valeriia D. Andreeva, Jan Stegemann, Julia Ackermann, Janus A. C. Wartmann, Svenja Herbertz, Sebastian Kruss   +6 more
wiley   +1 more source

Fluorescent nanosensors for intracellular measurements: synthesis, characterisation, calibration and measurement

Frontiers in Physiology, 2014
Measurement of intracellular acidification is important for understanding fundamental biological pathways as well as developing effective therapeutic strategies.
Arpan Shailesh Desai, Veeren M Chauhan, Angus P R Johnston, Tim eEsler, Jonathan William Aylott   +4 more
doaj   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source