scholarly journals CHEMICAL SENSORS AND CHEMICAL SENSOR SYSTEMS: FUNDAMENTALS LIMITATIONS AND NEW TRENDS

2006 ◽  
pp. 69-94 ◽  
Author(s):  
Andrea Orsini ◽  
Arnaldo D’Amico
Keyword(s):  
Chemical Sensors ◽  
Chemical Sensor ◽  
Sensor Systems

scholarly journals Wireless and mobile optical chemical sensors and biosensors

2018 ◽  
Vol 37 (4) ◽  
Author(s):  
Petar Kassal ◽  
Ema Horak ◽  
Marija Sigurnjak ◽  
Matthew D. Steinberg ◽  
Ivana Murković Steinberg
Keyword(s):  
Optical Sensors ◽  
Chemical Sensors ◽  
Chemical Sensor ◽  
Current Trend ◽  
Original Research ◽  
Sensor Systems ◽  
Optical Chemical Sensor ◽  
Trade Offs ◽  
Optical Chemical Sensors ◽  
Personal Fitness

Abstract This review explores the current state-of-the-art wireless and mobile optical chemical sensors and biosensors. The review is organised into three sections, each of which investigates a major class of wireless and/or mobile optical chemical sensor: (i) optical sensors integrated with a radio transmitter/transceiver, (ii) wearable optical sensors, and (iii) smartphone camera-based sensors. In each section, the specific challenges and trade-offs surrounding the (bio)chemical sensing mechanism and material architecture, miniaturisation, integration, power requirements, readout, and sensitivity are explored with detailed examples of sensor systems from the literature. The analysis of 77 original research articles published between 2007 and 2017 reveals that healthcare and medicine, environmental monitoring, food quality, and sport and fitness are the target markets for wireless and mobile optical chemical sensor systems. In particular, the current trend for personal fitness tracking is driving research into novel colourimetric wearable sensors with smartphone readout. We conclude that despite the challenges, mobile and wearable optical chemical sensor systems are set to play a major role in the sensor Internet of Things.

Imprinting with Chemical Sensors - Challenges in Molecular Recognition and Universal Application

2003 ◽  
Vol 787 ◽  
Author(s):  
Franz L. Dickert ◽  
Peter A. Lieberzeit ◽  
Sylwia Gazda-Miarecka ◽  
Konstantin Halikias ◽  
Roland Bindeus
Keyword(s):  
Chemical Sensors ◽  
Chemical Sensor ◽  
Capacitive Sensor ◽  
Functional Polymers ◽  
Template Molecule ◽  
Selectivity Factor ◽  
Aromatic System ◽  
Polycyclic Aromatic ◽  
Selective Chemical ◽  
Universal Application

ABSTRACTMolecular imprinting leads to functional polymers that are capable to incorporate the template used and thus lead to selective chemical sensor systems when combined with a suitable transducer. Benzene and xylene can e.g. be distinguished with a selectivity factor of nearly ten using mass-sensitive devices such as QCM and SAW, although they both contain an aromatic system and differ only by the methyl groups. Sensing materials are further tuned by using binary mixtures as templates. When analyzing polycyclic aromatic hydrocarbons (PAH) by fluorescence and QCM measurements, the sensitivity is substantially increased if a second template molecule is applied as a porogen. Capacitive sensor measurements on polymers imprinted with microorganisms, such as yeasts, show substantial sensor responses due to highly selective inclusion compared with a non-functionalised surface yielding only negligible effects.

A succinct review of refined chemical sensor systems based on conducting polymer–cyclodextrin hybrids

2019 ◽  
Vol 79 ◽  
pp. 19-28 ◽  
Author(s):  
Joonwon Bae ◽  
Kyusoon Shin ◽  
Oh Seok Kwon ◽  
Yunjung Hwang ◽  
Jaieun An ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Chemical Sensor ◽  
Sensor Systems

scholarly journals Prediction of Binding Stability of Pu(IV) and PuO2(VI) by Nitrogen Tridentate Ligands in Aqueous Solution

2020 ◽  
Vol 21 (8) ◽  
pp. 2791 ◽  
Author(s):  
Keunhong Jeong ◽  
Hye Jin Jeong ◽  
Seung Min Woo ◽  
Sungchul Bae
Keyword(s):  
Chemical Sensors ◽  
Nuclear Power ◽  
Power Plants ◽  
Chemical Sensor ◽  
Structural Information ◽  
Population Analysis ◽  
Binding Energies ◽  
Tridentate Ligands ◽  
Ligand Interactions ◽  
Bonding Characteristics

Plutonium has potential applications in energy production in well-controlled nuclear reactors. Since nuclear power plants have great merit as environmentally friendly energy sources with a recyclable system, a recycling system for extracting Pu from spent fuels using suitable extractants has been proposed. Pu leakage is a potential environmental hazard, hence the need for chemical sensor development. Both extractants and chemical sensors involve metal–ligand interactions and to develop efficient extractants and chemical sensors, structural information about Pu ligands must be obtained by quantum calculations. Herein, six representative nitrogen tridentate ligands were introduced, and their binding stabilities were evaluated. The tridentate L6, which contains tri-pyridine chelate with benzene connectors, showed the highest binding energies for Pu(IV) and PuO2(VI) in water. Analysis based on the quantum theory of atoms in molecular analysis, including natural population analysis and electron density studies, provided insight into the bonding characteristics for each structure. We propose that differences in ionic bonding characteristics account for the Pu-ligand stability differences. These results form a basis for designing novel extractants and organic Pu sensors.

Fiber optic chemical sensor systems for monitoring pH changes in concrete

2004 ◽  
Author(s):  
Muhammed P. Basheer ◽  
Kenneth T. V. Grattan ◽  
Tong Sun ◽  
Adrian E. Long ◽  
Daniel McPolin ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Fiber Optic ◽  
Sensor Systems ◽  
Ph Changes

scholarly journals Chemical sensor systems for emission control from combustions

2013 ◽  
Vol 187 ◽  
pp. 184-190 ◽  
Author(s):  
A. Lloyd Spetz ◽  
J. Huotari ◽  
C. Bur ◽  
R. Bjorklund ◽  
J. Lappalainen ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Emission Control ◽  
Sensor Systems

scholarly journals An unmodified graphene foam chemical sensor based on SVM for discrimination of chemical molecules with broad selectivity

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43560-43566 ◽  
Author(s):  
Weiwei Yue ◽  
Hongling Hua ◽  
Yanli Tian ◽  
Jianing Li ◽  
Shouzhen Jiang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Chemical Sensors ◽  
Chemical Sensor ◽  
Sensor System ◽  
Graphene Foam

Compared to conventional chemical sensors, this paper presented a chemical sensor system with broad selectivity for a variety of molecules without any surface modification.

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