Emulation of diverse electronic devices on textile platform is considered as a promising approach for implementing wearable smart electronics. Of particular, the development multifunctional polymeric fibers and their integration in common fabrics have been extensively researched human friendly platforms. Here we report successful emulation body-motion sensors user-interface (UI) by using situ polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)-coated fibers. With PEDOT fabric, via an...

Ultrasensitive room-temperature operable gas sensors utilizing the photocatalytic activity of Na-doped p-type ZnO (Na:ZnO) nanoflowers (NFs) are demonstrated as a promising candidate for diabetes detection. The flowerlike Na:ZnO nanoparticles possessing ultrathin hierarchical nanosheets were synthesized by facile solution route at low processing temperature 40 °C. It was found that Na element acting dopant successfully incorporated in lattice. On basis NFs, chemiresistive-type realized,...

Simple-to-use colorimetric sensors that can detect the release of gases from food spoilage are great interest in safety, as a shelf-life indicator and for waste management. Herein, we demonstrate polydiacetylene/zinc oxide nanopellet (PDA/ZnO)-embedded polydimethylsiloxane (PDMS) films sensing meat based on ammonia gas detection. In particular, by optimizing weight ratio ZnO nanopellets composite film (15 wt %), high response ∼51.5% be achieved 200 ppm exposure observed naked eye. The...

We report on highly stable amorphous indium-gallium-zinc oxide (IGZO) gas sensors for ultraviolet (UV)-activated room-temperature detection of volatile organic compounds (VOCs). The IGZO fabricated by a low-temperature photochemical activation process and exhibiting two orders higher photocurrent compared to conventional zinc sensors, allowed high sensitivity against various VOCs even at room temperature. From systematic analysis, it was found that increasing the UV intensity, sensitivity,...

Abstract A flexible fabric gas sensor for the detection of sub-ppm-level NH 3 is reported in this paper. The reduced graphene oxide (rGO)-polyaniline (PANI) nanocomposite was successfully coated on cotton thread via an situ polymerization technique. morphology, microstructure and composition were analyzed by field-emission scanning electron microscope, x-ray diffraction, Fourier transform infrared spectroscopy Raman spectroscopy. Furthermore, we have studied responses rGO-PANI...

A single-yarn-based gas sensor has been made from conductive polyaniline coated on commercial yarns. This can detect ammonia concentration in an environment or a working area. Cotton, rayon and polyester are utilized as substrates using dip-coating process. The yarns show ohmic behavior with electrical resistance of 15-31 kΩ cm-1. yarn exhibits higher mechanical strength even after intensive chemical treatment. It also the highest response 57% 50 ppm gas, at which health problems will occur....

Recently, wearable electric heaters with high durability and low-power operation have attracted much attention due to their potential change traditional approaches for personal heating management thermal therapy systems. Here, we report textile-based based on highly durable conductive yarns, which were transformed from cotton yarns through a facile dyeing process of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) ethylene glycol (EG). With the EG post-treatment, exhibited an...

Easy-to-use and on-site detection of dissolved ammonia are essential for managing aquatic ecosystems aquaculture products since low levels can cause serious health risks harm life. This work demonstrates quantitative naked eye based on polydiacetylene (PDA) sensors with machine learning classifiers. PDA vesicles were assembled from diacetylene monomers through a facile green chemical synthesis which exhibited blue-to-red color transition upon exposure to was detectable by the eye. The change...

Securing the stability of sensing responses under stretching and washing is essential for textile-based wearable gas sensors. Herein, we report sensors composed polyaniline (PANi)-decorated poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS) coated on cotton yarn. Without conventional hydrochloric acid (HCl) doping, PANi/PEDOT/PSS sensor exhibits a high electrical conductivity 1343 S cm–1, good sensitivity, excellent detecting ammonia, obviously better than PEDOT/PSS...

Monitoring of plant hormone ethylene plays a crucial role in managing the growth and development plants, especially ripening fruits opening flowers. Here, highly sensitive sensor is demonstrated using silver nanoparticle (Ag NP)-decorated zinc oxide nanoflowers (ZnO NFs), prepared through facile low-temperature chemical synthesis. The results indicate that Ag NP decoration on surface ZnO NFs improved sensing properties under ultraviolet (UV) illumination. With an optimized UV light intensity...

Abstract Stretchable strain sensors have attracted much attention for health monitoring systems, human‐machine interfaces, and robotics. However, there is still a challenge to develop with excellent mechanical stretchability high strain‐sensing region as well cost‐effective fabrication process. Herein, highly sensitive, reliable low‐cost are developed using resistive transduction of poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) silver nanowire (Ag NW). Natural rubber was...

Abstract Poly(3, 4- ethylenedioxythiophene) doped with poly(styrenesulfonate) (PEDOT:PSS) conductive polymer has been extensively used in various applications including flexible electrode and stretchable sensor. This study reports the electrical mechanical strain behaviours of PEDOT:PSS deposited on pre-vulcanized rubber substrate, which is modified surface by microwave plasma. The effect plasma treatment cycles adhesion coated conductivity have investigated. results show a uniform film...

Molecular interaction between zinc phthalocyanine (ZnPc) thin films and various oxidizing gas molecules was examined by measuring sensor response of chemiresistor structures. The different types can be obtained from the interactions to nitrogen dioxide (NO2), sulfur (SO2) carbon monoxide (CO). For NO2 interaction, current thermal evaporated ZnPc film with metal inter-digitaged pattern electrodes proportionally increase concentration gas. measurement cycle, at desired flowed into chamber for...

This work presents development of chemiresistor gas sensor based on polyaniline (PANi) blending with poly(methyl methacrylate) (PMMA) thin film for identification volatile organic compounds (VOCs) relevant to environmental monitoring. The investigated VOCs are including acetone, methanol, ethanol and ammonia. sensors prepared by solution mixing between non-conducting form PANi PMMA in presence NMP solution. mixed is spun aluminum interdigitated electrodes converted into conducting using HCl...

Alcohol gas sensors based on composite thin film of polyaniline (PANi) with multiwall carbon nanotube (MWCNT) have been prepared using spin coating technique. PANi was synthesized by chemical oxidative polymerization aniline ammonium persulfate in hydrochloric (HCl) medium. The doped MWCNT presence NMP solution mixing method and spun aluminum interdigitated electrodes. as-deposited converted into conducting form HCl doping process. formation morphology PANi/MWCNT films were analyzed UV/VIS...

Abstract Silver nanowire is one of the most attractive materials for making devices. In this work, we are interested in using silver nanowires heater application. To get a good heater, electrical resistance device should be low order to generate high temperature. The media disperse also important and helps inter-connection between nanowires. Hence, study different amounts isopropanol (IPA) water as solutions were prepared under percentages varying from 0% 100%. Optical images showed...

Hydrophobic surface of pre-vulcanized natural rubber can be modified to a hydrophilic under plasma treatment. This is useful make flexible and composite substrate from in many applications. A low-cost microwave cleaner was built using argon gas as source for generating plasma. The treatment conditions on were investigated two parameters: time cycles. We found that the water contact angle decreased when treated more or To create conductivity rubber, poly(3,4-ethylenedioxythiophene)...

Abstract Recently electronic textiles have received much interest due to their board applications in wearable electronics such as solar energy, physical and chemical sensors. In this work, the conductive cotton is prepared by dip coating poly(3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) on commercial yarn. The electrical conductivity of can be enhanced secondary treated PEDOT:PSS with ethylene glycol (EG). EG-treated exhibits lower resistance 600 Ω/cm comparison pristine...

The electrical properties of OFET devices were studied as a function the thickness pentacene active layer. A bottom gate, top contact structure was investigated by measuring characteristics with 100 ¿m channel length and comparing results 2-D numerical simulation at various organic layers. saturated current same gate voltage increased when film thicker. From cross-section results, this is due to carrier has move from source drain electrodes through conducting across whole thick However,...

For nanoscale devices, the source and drain electrodes in organic filed effect transistor (OFET) are usually placed on opposite side of insulator gate electrode. While conventional model to describe FET was extracted from planar structure with all laid same side. Therefore electrode OFET investigated by using two-dimensional numerical simulation then comparing current-voltage characteristic fabricated top-contact bottom-gate structures based pentacene. this type structure, a layer...

Staircase waveforms of metal oxide sensor response modulated heater temperature were analysed and the alternative transient signal processing was proposed to improve selectivity sensitivity gas in order identify various types volatile organic compounds. Twenty-one steps ramping voltage up down applied step responses investigated by wavelet transform for both levels decay characteristics each step. For analysis, Haar fourth daubechies wavelets used decompose analyze into seventh level...

Abstract Polydiacetylene (PDA) is one of the well-known thermochromic materials having a high potential in applications such as displays and sensor technology. Many research groups have been working on controlling reversibility PDA-based materials. In this research, colorimetric response PDA assembled with indium or gallium doped zinc oxide was studied various concentrations. Indium prepared by hydrothermal method. The compositions 5, 10, 15% 12, 24% gallium, respectively. Undoped exhibited...