Stretchable, Skin-Breathable, and Ultrasensitive Respiration Sensor Using Graphite on Paper With Smart Structures Tập 22 Số 17 - Trang 16804-16810 - 2022
Thanh Nguyen, Nishith Shivakumar Shagle, Hieu Vu, Hung Nguyen, Hoang-Phuong Phan, Van Thanh Dau, Pingan Song, Hao Wang, Tran Dang Quoc, Duy Tien Nguyen, Nam-Trung Nguyen, Dzung Viet Dao, Toan Dinh
Healthy sleep is an important indicator of good physical and mental health. The
current technology employed for monitoring sleep quality is typically expensive
and invasive, which demands innovations in respiration monitoring. In addition,
recent effort in developing wearable respiration sensors has faced great
challenges in concurrently obtaining low cost, high stretchability, and high
sensitivit... hiện toàn bộ
#Airflow sensor #graphite on paper #respiration monitoring #wearable and stretchable electronics #smart structure
Identification of odors using a sensor array with kinetic working temperature and Fourier spectrum analysis Tập 2 Số 3 - Trang 230-234 - 2002
K. Cai, T. Maekawa, T. Takada
A method for the identification of odors using a dynamically driven sensor array
has been developed, in which transient responses of the sensor array were used
to recognize target odors. Fourier transformation was used to transform the
transient response curves of the sensor array into Fourier spectra, and patterns
composed of some of the magnitudes in the spectra were used in the pattern
recognit... hiện toàn bộ
#Sensor arrays #Temperature sensors #Kinetic theory #Acoustic sensors #Gas detectors #Ethanol #Sensor systems #Electronic noses #Fourier transforms #Transient response
System identification of electronic nose data from cyanobacteria experiments Tập 2 Số 3 - Trang 218-229 - 2002
G.E. Searle, J.W. Gardner, M.J. Chappell, K.R. Godfrey, M.J. Chapman
Linear black-box modeling techniques are applied to both steady state and
dynamic data gathered from two electronic nose experiments involving
cyanobacteria cultures. Analysis of the data from a strain identification
experiment shows that very simple low order MISO black box model structures are
able to produce very high success rates (up to 100%) when identifying the toxic
strain of cyanobacteria... hiện toàn bộ
#System identification #Electronic noses #Steady-state #Microorganisms #Capacitive sensors #Data analysis #Artificial neural networks #Food industry #Biomedical monitoring #Medical diagnosis
Distributed odor source localization Tập 2 Số 3 - Trang 260-271 - 2002
A.T. Hayes, A. Martinoli, R.M. Goodman
This paper presents an investigation of odor localization by groups of
autonomous mobile robots. First, we describe a distributed algorithm by which
groups of agents can solve the full odor localization task. Next, we establish
that conducting polymer-based odor sensors possess the combination of speed and
sensitivity necessary to enable real world odor plume tracing and we demonstrate
that simple... hiện toàn bộ
#Robot sensing systems #Animals #Robot kinematics #Mobile robots #Chemical engineering #Robustness #Particle swarm optimization #Chemical hazards #Distributed algorithms #Polymers
Effects of electrode configuration on polymer carbon-black composite chemical vapor sensor performance Tập 2 Số 3 - Trang 160-168 - 2002
B. Matthews, Jing Li, S. Sunshine, L. Lerner, J.W. Judy
The performance of polymer carbon-black composite chemical vapor sensors as a
function of underlying electrode size and geometry has been studied. The sensor
performance parameters investigated were sensor response magnitude to a toluene
analyte (100, 500, and 1000 ppm), fundamental sensor noise in the presence of
air, and two concentrations of toluene (100 and 500 ppm), and signal-to-noise
ratio ... hiện toàn bộ
#Chemical sensors #Electrodes #Signal to noise ratio #Sensor arrays #Geometry #Polymer films #Signal analysis #Performance analysis #Testing #Plastic insulation
Bioelectronic sniffer device for trimethylamine vapor using flavin containing monooxygenase Tập 2 Số 3 - Trang 133-139 - 2002
K. Mitsubayashi, Y. Hashimoto
A bioelectronic sniffer device for trimethylamine (TMA) in the gas phase
"fish-odor substance" was constructed using a flavin-containing monooxygenase 3
(FMO3, one of xeno-biotic metabolizing enzymes) and a reaction unit with both
gas and liquid cells separated by a porous poly(tetrafluoroethylene) diaphragm
membrane (pore size: 30-60 /spl mu/m, thickness: 0.20 mm). A substrate
regeneration cycle ... hiện toàn bộ
#Humans #Marine animals #Biomembranes #Chemical industry #Gas detectors #Biochemistry #Time measurement #Reproducibility of results #Phase detection
Optimization of gas-sensitive polymer arrays using combinations of heterogeneous and homogeneous subarrays Tập 2 Số 3 - Trang 169-178 - 2002
D.M. Wilson, S.D. Gaffod
Results for optimizing an array of conducting polymer gas sensors for sensing
one of five analytes in the presence of up to four interferents are presented.
The optimized array consists of subarrays of homogeneous (like) sensors
contributing to a larger heterogeneous array of up to ten points (unlike
sensors) in multidimensional sensor space. The optimization techniques presented
here are linear, ... hiện toàn bộ
#Polymers #Sensor arrays #Chemical sensors #Sensor phenomena and characterization #Sensor systems #Gas detectors #Multidimensional systems #Additives #Information analysis #Ethanol
Medical diagnosis with the gradient microarray of the KAMINA Tập 2 Số 3 - Trang 254-259 - 2002
I. Koronczi, K. Ziegler, U. Kruger, J. Goschnick
Investigations with human breath and cultures of oral bacteria have been
performed to examine the analytical performance of the KAMINA gradient
microarray based on a segmented metal oxide layer. Standard microarray chips
with 38 segments, one chip equipped with platinum doped SnO/sub 2/ and the other
with WO/sub 3/, were inspected. The results show that the gradient microarray is
able to detect ac... hiện toàn bộ
#Medical diagnosis #Microorganisms #Humans #Gases #Principal component analysis #Performance analysis #Platinum #Medical diagnostic imaging #Ethanol #Pattern analysis
SnO/sub 2/ gas sensing array for combustible and explosive gas leakage recognition Tập 2 Số 3 - Trang 140-149 - 2002
Dae-Sik Lee, Duk-Dong Lee, Sang-Woo Ban, Minho Lee, Youn Tae Kim
A gas-sensing array with ten different SnO/sub 2/ sensors was fabricated on a
substrate for the purpose of recognizing various kinds and quantities of indoor
combustible gas leakages, such as methane, propane, butane, LPG, and carbon
monoxide, within their respective threshold limit value (TLV) and lower
explosion limit (LEL) range. Nano-sized sensing materials with high surface
areas were prepare... hiện toàn bộ
#Sensor arrays #Thermal sensors #Electronic noses #Explosives #Fuzzy neural networks #Gas detectors #Explosions #Nanostructured materials #Additives #Reproducibility of results
Gas sensitivity comparison of polymer coated SAW and STW resonators operating at the same acoustic wave length Tập 2 Số 3 - Trang 150-159 - 2002
I.D. Avramov, M. Rapp, S. Kurosawa, P. Krawczak, E.I. Radeva
Results from systematic gas sensing experiments on polymer coated
surface-transverse-wave (STW) and surface-acoustic-wave (SAW) based two-port
resonators on rotated Y-cut quartz, operating at the same acoustic wavelength of
7.22 /spl mu/m, are presented. The acoustic devices are coated with
chemosensitive films of different viscoelastic properties and thicknesses, such
as solid hexamethyldisiloxan... hiện toàn bộ
#Polymer films #Surface acoustic waves #Acoustic waves #Chemical sensors #Surface acoustic wave devices #Acoustic devices #Solids #Acoustic sensors #Chemical analysis #Phase noise