Готові списки джерел за темами / Textile UV-sensor

Добірка наукової літератури з теми "Textile UV-sensor"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Textile UV-sensor"

Seipel, Sina, Junchun Yu, Aravin P. Periyasamy, Martina Viková, Michal Vik, and Vincent A. Nierstrasz. "Inkjet printing and UV-LED curing of photochromic dyes for functional and smart textile applications." RSC Advances 8, no. 50 (2018): 28395–404. http://dx.doi.org/10.1039/c8ra05856c.

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Vikova, Martina, and Michal Vik. "Colorimetric Properties of Photochromic Textiles." Applied Mechanics and Materials 440 (October 2013): 260–65. http://dx.doi.org/10.4028/www.scientific.net/amm.440.260.

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Photochromism is a chemical process in which a compound undergoes a reversible change between two states having separate absorption spectra, i.e. different colors. The change of color in one direction occurs under influence of electromagnetic radiation, usually UV light, and in the other direction by altering or removing the light source or alternatively by using thermal means. Based on photochromic pigment we developed simple textile sensor sensitive to UV light, which is usable for visual indication of intensity UV-A radiation. Main attention was given to colorimetric properties of photochromic textiles during decay phase of photochromic color change, such as saturation change and fatigue resistance.

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Seipel, S., J. Yu, A. P. Periyasamy, M. Viková, M. Vik, and V. A. Nierstrasz. "Characterization and optimization of an inkjet-printed smart textile UV-sensor cured with UV-LED light." IOP Conference Series: Materials Science and Engineering 254 (October 2017): 072023. http://dx.doi.org/10.1088/1757-899x/254/7/072023.

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Hayat, Mazhar, Afzal Shah, Jan Nisar, Iltaf Shah, Abdul Haleem, and Muhammad Naeem Ashiq. "A Novel Electrochemical Sensing Platform for the Sensitive Detection and Degradation Monitoring of Methylene Blue." Catalysts 12, no. 3 (March 8, 2022): 306. http://dx.doi.org/10.3390/catal12030306.

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Methylene blue is a toxic dye that is extensively used as a colorant in textile industries. Industrial effluent containing methylene blue, when drained into water bodies without proper treatment, poses a serious threat to aquatic and human lives. In order to protect the biocycle, various methods have been established to detect and remove hazardous dyes from aqueous systems. Electrochemical methods are preferred, owing to their characteristic features of simplicity, portability, potential selectivity, cost effectiveness, and rapid responsiveness. Based on these considerations, an electrochemical sensor consisting of amino-group-functionalized, multi-walled carbon nanotubes (NH2-fMWCNTs) immobilized on a glassy carbon electrode (GCE) was developed for the sensitive detection of methylene blue in aqueous solutions. The performance of the designed sensor was analyzed by electrochemical impedance spectroscopy, cyclic voltammetry, and square wave voltammetry. The developed sensing tool demonstrated promising features of sensitivity, selectivity, stability, fast responsiveness, and the ability to work with a very small volume of the analyte, i.e., in microliters, for analysis. Amino groups rich in electrons provide a negative charge to multi-walled carbon nanotubes, which significantly enhances the electrocatalytic activity of NH2-fMWCNTs for cationic dyes such as methylene blue. Using the designed sensing platform, a linear calibration plot with a limit of detection of 0.21 nM was obtained for methylene blue under optimized conditions. The designed sensor was also employed to monitor the extent and kinetics of the degradation of methylene blue. Titania nanoparticles were used for photocatalytic degradation, and the kinetics of degradation was monitored by both UV-Visible spectroscopic and electrochemical methods. The results revealed more than 95% removal of methylene blue in a time span of just 30 min.

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Alam, A. K. M. Mashud, Donovan Jenks, George A. Kraus, and Chunhui Xiang. "Synthesis, Fabrication, and Characterization of Functionalized Polydiacetylene Containing Cellulose Nanofibrous Composites for Colorimetric Sensing of Organophosphate Compounds." Nanomaterials 11, no. 8 (July 21, 2021): 1869. http://dx.doi.org/10.3390/nano11081869.

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Organophosphate (OP) compounds, a family of highly hazardous chemical compounds included in nerve agents and pesticides, have been linked to more than 250,000 annual deaths connected to various chronic diseases. However, a solid-state sensing system that is able to be integrated into a clothing system is rare in the literature. This study aims to develop a nanofiber-based solid-state polymeric material as a soft sensor to detect OP compounds present in the environment. Esters of polydiacetylene were synthesized and incorporated into a cellulose acetate nanocomposite fibrous assembly developed with an electrospinning technique, which was then hydrolyzed to generate more hydroxyl groups for OP binding. Scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), Instron® tensile tester, contact angle analyzer, and UV–Vis spectroscopy were employed for characterizations. Upon hydrolysis, polydiacetylene esters in the cellulosic fiber matrix were found unaffected by hydrolysis treatment, which made the composites suitable for OP sensing. Furthermore, the nanofibrous (NF) composites exhibited tensile properties suitable to be used as a textile material. Finally, the NF composites exhibited colorimetric sensing of OP, which is visible to the naked eye. This research is a landmark study toward the development of OP sensing in a protective clothing system.

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Costa, Sofia, Diana Ferreira, Armando Ferreira, Filipe Vaz, and Raul Fangueiro. "Multifunctional Flax Fibres Based on the Combined Effect of Silver and Zinc Oxide (Ag/ZnO) Nanostructures." Nanomaterials 8, no. 12 (December 19, 2018): 1069. http://dx.doi.org/10.3390/nano8121069.

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Cellulosic fibre-based smart materials exhibiting multiple capabilities are getting tremendous attention due to their wide application areas. In this work, multifunctional flax fabrics with piezoresistive response were developed through the combined functionalization with silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs). Biodegradable polyethylene glycol (PEG) was used to produce AgNPs, whereas ZnONPs were synthetized via a simple and low-cost method. Flax fabrics with and without NPs were characterized by Ground State Diffuse Reflectance (GSDR), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR), and Thermogravimetric analysis (TGA). After creating a conductive surface by flax functionalization with AgNPs, ZnONPs were synthetized onto these fabrics. The developed fibrous systems exhibited piezoresistive response and the sensor sensitivity increased with the use of higher ZnO precursor concentrations (0.4 M). Functionalized fabrics exhibited excellent antibacterial activity against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria, higher hydrophobicity (WCA changed from 00 to >1000), UV radiation resistance, and wash durability. Overall, this work provides new insights regarding the bifunctionalization of flax fabrics with Ag/ZnO nanostructures and brings new findings about the combined effect of both NPs for the development of piezoresistive textile sensors with multifunctional properties.

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Nur, Adrian, Anis Yuliana Kusumaningrum, Danang Bayu Prananda, and Tutut Ayu Kinasih. "KOMPOSIT ZnO-CuO HASIL SINTESIS DENGAN METODE ELEKTROKIMIA SEBAGAI KATALIS FOTODEGRADASI METHYL ORANGE." Equilibrium Journal of Chemical Engineering 3, no. 2 (December 22, 2020): 39. http://dx.doi.org/10.20961/equilibrium.v3i2.42624.

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Abstrak. Semikonduktor oksida logam adalah salah satu jenis nanokomposit yang digunakan untuk rangkaian mikroelektronik, perangkat piezoelektrik, sel bahan bakar, sensor, katalis, pelapis permukaan untuk mencegah korosi, dan sel surya. ZnOCuO adalah jenis komposit semikonduktor oksida logam. Kombinasi kedua logam tersebut dapat menghasilkan komposit yang dapat digunakan sebagai katalisator dan zat antibakteri. Metode fotodegradasi adalah pengolahan zat warna tekstil yang memecah zat warna organik menjadi senyawa yang lebih sederhana. Tujuan dari penelitian ini adalah untuk mengetahui keefektifan komposit ZnO-CuO yang digunakan sebagai katalisator dalam proses fotodegradasi jingga metil. Metode yang digunakan dalam sintesis komposit ZnO-CuO adalah metode elektrokimia dengan menggunakan larutan elektrolit asam asetat. Pada penelitian ini digunakan asam asetat dengan konsentrasi 0,15 dan 0,3 M. Komposit yang dihasilkan dianalisis menggunakan analisis XRF, XRD dan FTIR. Komposit digunakan sebagai katalis fotodegradasi jingga metil dengan variasi waktu yang berbeda 0 sampai 150 menit. Absorbansi larutan degradasi diukur dengan Spektrofotometer UV VIS. Efektivitas yang dihasilkan dari komposit dengan konsentrasi asam asetat 0,3 M sebesar 21,69%, sedangkan efektivitas yang dihasilkan dari komposit dengan konsentrasi 0,15 M sebesar 16,58%. Katalis yang dihasilkan pada konsentrasi asam asetat 0,3 M lebih efektif daripada katalis yang diproduksi pada konsentrasi asam asetat 0,15 M. Abstract. Metal oxide semiconductors are one type of nanocomposites used for microelectronic circuits, piezoelectric devices, fuel cells, sensors, catalysts, surface coatings to prevent corrosion, and solar cells. ZnOCuO is a type of metal oxide semiconductor composite. The combination of these two metals can produce a composite that can be used for catalysts and antibacterial substances. Photodegradation method is a textile dyestuff treatment which breaks down organic dyes into simpler compounds. The purpose of this paper is to determine the effectiveness of ZnO-CuO composites used as catalysts in the methyl orange photodegradation process. The method used in the synthesis of ZnO-CuO composites is an electrochemical method using an acetic acid electrolyte solution. In this study, acetic acid was used with the concentration of 0.15 and 0.3 M. The resulting composites were analyzed using XRF, XRD and FTIR analysis. The composites are used as methyl orange photodegradation catalysts with different time variations 0 to 150 minutes. The absorbance of the degradation solution was measured by UV VIS Spectrophotometer. The effectiveness produced from the composites with concentrations of 0.3 M acetic acid was 21.69%, while the effectiveness produced from the composites with concentrations of 0.15 M was 16.58%. Catalysts produced at concentrations of 0.3 M acetic acid are more effective than catalysts produced at concentrations of 0.15 M acetic acid. Keywords: electrosynthesis, ZnO-CuO composite, photodegradation, methyl orange, textile dyes

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Zhou, Yi, and Rebecca Stewart. "Highly flexible, durable, UV resistant, and electrically conductive graphene based TPU /textile composite sensor." Polymers for Advanced Technologies, September 7, 2022. http://dx.doi.org/10.1002/pat.5856.

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Park, Young Ki, Hyun Ju Oh, Hee Dong Lee, Jung Jin Lee, Jong H. Kim, and Woosung Lee. "Facile and Eco-friendly Fabrication of a Colorimetric Textile Sensor by UV-induced Photografting for Acidic Gas Detection." Journal of Environmental Chemical Engineering, August 2022, 108508. http://dx.doi.org/10.1016/j.jece.2022.108508.

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Hakeem, Muhammad Kamran, Afzal Shah, Jan Nisar, Faiza Jan Iftikhar, Sher Bahadar Khan, and Iltaf Shah. "Electrochemical Sensing Platform for the Detection and Degradation Studies of Metanil Yellow." Journal of The Electrochemical Society, April 22, 2022. http://dx.doi.org/10.1149/1945-7111/ac6981.

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Abstract The discharge of dye loaded effluents from textile and food industries into natural water has skyrocketed in the last few years due to booming industrialization needed to serve a mushrooming population. The adulterated water poses a serious threat to human and aquatic life. The present work aims to engage electrochemical methods by designing an electrochemical sensor using a modified glassy carbon electrode with amine functionalized multi-walled carbon nanotubes (NH2-fMWCNTs) to detect nanomolar concentration of Metanil Yellow (MY) which is an azo dye used illegally in food industry. Various experimental conditions, such as the supporting electrolyte, pH of the electrolyte, deposition potential, and deposition time were optimized for the best performance of the designed sensing platform by square wave anodic stripping voltammetry (SWASV). Under optimized conditions, the limit of detection of MY was found to be 0.17 nM. The catalytic degradation of the dye was also probed by the designed nanosensor electrochemically and the results were supported by UV-visible spectroscopic technique. The dye was found to follow pseudo first order kinetics with a degradation extent of 98.7 %. The obtained results hold great promise for safeguarding human and aquatic lives from the effects of toxic dye effluents.

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Частини книг з теми "Textile UV-sensor"

Seipel, Sina, Junchun Yu, Aravin P. Periyasamy, Martina Viková, Michal Vik, and Vincent A. Nierstrasz. "Resource-Efficient Production of a Smart Textile UV Sensor Using Photochromic Dyes: Characterization and Optimization." In Narrow and Smart Textiles, 251–57. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69050-6_22.

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Das, Rajib, Vibhav Ambardekar, and Partha Pratim Bandyopadhyay. "Titanium Dioxide and Its Applications in Mechanical, Electrical, Optical, and Biomedical Fields." In Titanium Dioxide [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98805.

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Titanium dioxide (TiO2), owing to its non-toxicity, chemical stability, and low cost, is one of the most valuable ceramic materials. TiO2 derived coatings not only act like a ceramic protective shield for the metallic substrate but also provide cathodic protection to the metals against the corrosive solution under Ultraviolet (UV) illumination. Being biocompatible, TiO2 coatings are widely used as an implant material. The acid treatment of TiO2 promotes the attachment of cells and bone tissue integration with the implant. In this chapter, the applications of TiO2 as a corrosion inhibitor and bioactive material are briefly discussed. The semiconducting nature and high refractive index of TiO2 conferred UV shielding properties, allowing it to absorb or reflect UV rays. Several studies showed that a high ultraviolet protection factor (UPF) was achieved by incorporating TiO2 in the sunscreens (to protect the human skin) and textile fibers (to minimize its photochemical degradation). The rutile phase of TiO2 offers high whiteness, and opacity owing to its tendency to scatter light. These properties enable TiO2 to be used as a pigment a brief review of which is also addressed in this chapter. Since TiO2 exhibits high hardness and fracture toughness, the wear rate of composite is considerably reduced by adding TiO2. On interacting with gases like hydrogen at elevated temperatures, the electrical resistance of TiO2 changes to some different value. The change in resistance can be utilized in detecting various gases that enables TiO2 to be used as a gas sensor for monitoring different gases. This chapter attempts to provide a comprehensive review of applications of TiO2 as an anti-corrosion, wear-resistant material in the mechanical field, a UV absorber, pigment in the optical sector, a bioactive material in the biomedical field, and a gas sensor in the electrical domain.

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Тези доповідей конференцій з теми "Textile UV-sensor"

Lall, Pradeep, Hao Zhang, and Rahul Lall. "Design and Development of Biometric Sensor Wearable Band Using Flexible Electronics." In ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2017 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ipack2017-74232.

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Flexible electronics have a myriad of potential applications in fields such as healthcare, soldier situational awareness, soldier rehabilitation, sports performance, and textile manufacturing among other areas. The primary benefits that flexible electronics provide to both the producers and consumers are their light weight, low power consumption, efficiency, low cost of production, flexibility, and scalability. In comparison to rigid electronics, these systems would be subjected to a greater amount of mechanical and thermal stress in real-time due to their ability to be flexed, rolled, folded, and stretched. Environmental conditions such as bending, mechanical shock, water immersion, sweat, UV radiation, and temperature exposure could degrade the performance of these embedded electronic systems. At this time, there is a lack of suitable test standards and reliability data about flexible electronics manufacturing, assembly, and real-time use. In this paper, a fully flexible medical electronics system was built in full dimension to study the assembly and operation-related failure mechanisms of flexible and wearable electronics. The fabricated flexible electronics system measures pulse and muscle activity, and then transmits this data to a paired mobile device. The pulse rate was measured using an LED and a photo diode, while an electromyography (EMG) sensor was used to measure muscle activity. After collecting the data, the microcontroller sends it to a Bluetooth module, which can in turn transmit this information to a paired mobile device. Through experimentation with the fabricated flexible electronics device, unexpected degradation and quality issues were observed. In flexible PCBs, the space between the IC lead could not be isolated by the solder mask because of its large feature size and as a result, increases the risk of shortage between IC leads when subjected to mechanical stress. In addition, during the assembly process, high reflow temperature was found to subject a huge thermal stress on the connections between the solder pad and copper trace. Proper support of the solder pad should be designed to compensate the thermal stress during the reflow process, and prevent the copper joint on top of the board from being damaged. A set of guidelines for flexible medical electronics and an implementable reliability test standard can, therefore, be established for medical device manufacturers based on these reliability assessments.

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