Applied Research最新文献

Silver and copper screen‐printed temperature sensors on flexible substrates: The impact of ink sintering conditions and composition 柔性基底上的银和铜丝网印刷温度传感器：油墨烧结条件和成分的影响

Applied Research Pub Date : 2024-06-12 DOI: 10.1002/appl.202300138

Celina Vaquero, Leire Bilbao, Ana Pérez, Haizea Villaverde, Jon Maudes, O. Adarraga, Izaskun Bustero, Miren Hayet, Julen Caballero, Ibai Santamaría

{"title":"Silver and copper screen‐printed temperature sensors on flexible substrates: The impact of ink sintering conditions and composition","authors":"Celina Vaquero, Leire Bilbao, Ana Pérez, Haizea Villaverde, Jon Maudes, O. Adarraga, Izaskun Bustero, Miren Hayet, Julen Caballero, Ibai Santamaría","doi":"10.1002/appl.202300138","DOIUrl":"https://doi.org/10.1002/appl.202300138","url":null,"abstract":"Fully screen‐printed silver and copper temperature sensors were studied up to 100°C. The influence of the processing conditions and the composition of three silver and one copper commercial inks is analyzed in this study. The curing temperature is extremely relevant to stabilize the initial resistance of silver sensors, especially for those printed with the lowest solid content ink. All printed sensors showed good linear behavior in the range of 25–100°C (R2 > 0.999) except for those fabricated with the lowest solid content silver ink, which also displayed the highest hysteresis and drift. The temperature coefficient of resistance (TCR) obtained for the copper sensors was 3.367 × 10−3 K−1 and for the three silver sensors, it ranged between 2.723 × 10−3 to 2.963 × 10−3 K−1. This TCR is higher than values reported for inkjet‐printed resistive temperature detectors. Overall, this work demonstrates that low‐cost, linear, screen‐printed temperature sensors can be successfully fabricated on flexible substrates.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"4 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of 3D micropatterned hydrophobic surfaces by fused filament fabrication printing technology 利用熔丝制造打印技术制造三维微图案疏水表面

Applied Research Pub Date : 2024-05-23 DOI: 10.1002/appl.202400003

S. Galvagno, L. Tammaro, S. Portofino, F. Loffredo, A. De Girolamo Del Mauro, F. Villani, G. Pandolfi, P. Iovane, P. Tassini, C. Borriello

{"title":"Fabrication of 3D micropatterned hydrophobic surfaces by fused filament fabrication printing technology","authors":"S. Galvagno, L. Tammaro, S. Portofino, F. Loffredo, A. De Girolamo Del Mauro, F. Villani, G. Pandolfi, P. Iovane, P. Tassini, C. Borriello","doi":"10.1002/appl.202400003","DOIUrl":"https://doi.org/10.1002/appl.202400003","url":null,"abstract":"In recent years, the interest in structured hydrophobic surfaces has considerably grown, finding applications in many industrial fields, including aerospace, automotive, and biomedical. Three‐dimensional (3D) printing technology is a simple, rapid and economic process to fabricate structured surfaces based on neat polymers and composite materials, allowing working with a wide variety of plastic materials. The manufactured surfaces show a roughness depending on the printing design and the printing resolution: this characteristic is ideal to achieve superhydrophobic properties. Furthermore, patterned surface structures can be printed by Fused Filament Fabrication (FFF), so increasing the hydrophobic character of the samples; indeed, micro and nano surface structures are required to make a hydrophobic surface.In this study, 3D micro‐patterned textures of pillars were printed by FFF using polylactide (PLA) and polypropilene (PP) as polymer filaments and PLA/carbon nanotubes (PLA/CNT) and PP/carbon fibers (PP/CF) as composite filaments. Morphologies of printed specimens were analyzed by optical microscopy and scanning electron microscopy (SEM). Good correspondence was found between pillars dimensions and edge‐edge pillars distance of CAD model and composites 3D printed samples. Their wettability was evaluated by static contact angle measurements. Results clearly show a significant increase of water contact angle values up to 50% in all micropatterned samples with respect to flat surfaces. This improvement was achieved by surface microstructuring without the use of nanoparticles and/or chemical treatment.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"24 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141107215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mössbauer study of iron oxide nanoparticles 氧化铁纳米粒子的摩斯鲍尔研究

Applied Research Pub Date : 2024-05-18 DOI: 10.1002/appl.202400008

C. Karra, C. Sarafidis

{"title":"Mössbauer study of iron oxide nanoparticles","authors":"C. Karra, C. Sarafidis","doi":"10.1002/appl.202400008","DOIUrl":"https://doi.org/10.1002/appl.202400008","url":null,"abstract":"Magnetic nanoparticles have recently attracted attention for biochemical and medical applications like drug delivery and hyperthermia for a variety of reasons with most important being their stability, chemical compatibility, and suitable magnetic properties like moderate specific mass magnetization. Cobalt ferrites are a well‐studied family of materials and the partial substitution of Fe3+ cations by rare earth (RE) ones may be used to tune the magnetic properties. In the present work pure and substituted Co ferrite nanoparticles with nominal stoichiometry CoFe2‐xRxO4 (R = Yb, Gd; x = 0.05, 0.1, 0.3) synthesized by the co‐precipitation method are studied with 57Fe Mössbauer spectroscopy in order to determine the incorporation of RE ions in the spinel lattice. The fitting procedure was based on the standard spinel model using two sextets for the octahedral and the tetrahedral coordinated positions of Fe atoms. All isomer shift values were found within the typical range of high spin ferric ions while quadrupole splitting values strongly suggest that there is a substitution preference; RE ions replace iron ones in octahedral sites. The inversion parameter was found to decrease with RE content (lowest value about 0.534 for CoFe1.90Yb0.10O4) and thermal treatment always results in changing the material towards normal spinel, while pure CoFe2O4 was inverse. Thermal treatment of substituted materials in ambient air at temperature range 1500‐1700 K for 12 hours increase crystallite size and changes the degree of inversion.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"106 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141124828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical insights towards a highly responsive AgInSe2 photodetector 实现高响应 AgInSe2 光电探测器的理论见解

Applied Research Pub Date : 2024-05-17 DOI: 10.1002/appl.202400038

Md. Islahur Rahman Ebon, Ahnaf Tahmid Abir, Dinesh Pathak, J. Hossain

{"title":"Theoretical insights towards a highly responsive AgInSe2 photodetector","authors":"Md. Islahur Rahman Ebon, Ahnaf Tahmid Abir, Dinesh Pathak, J. Hossain","doi":"10.1002/appl.202400038","DOIUrl":"https://doi.org/10.1002/appl.202400038","url":null,"abstract":"This treatise showcases the design as well as modeling about a photodetector (PD) based on AgInSe2 (AISe), a direct bandgap chalcopyrite with a bandgap of 1.19 eV. The PD exhibits outstanding optical and electronic characteristics, showcasing remarkable performance. The PD has been systematically investigated by varying the width, carrier density, and defect densities of specific layers, as well as the interface defect density of specific interfaces. Various layers are optimized to enhance the overall performance of the PD and the impact of different device resistances is analyzed. The photocurrent (JSC) and voltage (VOC) of the heterostructure photodetector are determined to be 38.60 mA/cm2 and 1.0 V, in turn. The maximum responsivity (R) and detectivity (D*) are identified as 0.70 A/W and 4.60×1016 Jones, respectively at a wavelength of 940 nm. The spectral response exhibits significantly higher values in the range of 800 to 1000 nm, indicating the device's capability to detect near‐infrared (NIR) light. This research provides valuable insights for the manufacturing of AISe material‐based photodetectors with enhanced performance.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"105 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing Fabrication and Performance of Liquid‐Processed Carbon Nanotube Photodetectors on Various Substrates 优化各种基底上的液体加工碳纳米管光电探测器的制造和性能

Applied Research Pub Date : 2024-02-14 DOI: 10.1002/appl.202300121

V. Lionas, D. Velessiotis, G. Pilatos, K. Giannakopoulos, A. Kyriakis, N. Glezos, D. Skarlatos

{"title":"Optimizing Fabrication and Performance of Liquid‐Processed Carbon Nanotube Photodetectors on Various Substrates","authors":"V. Lionas, D. Velessiotis, G. Pilatos, K. Giannakopoulos, A. Kyriakis, N. Glezos, D. Skarlatos","doi":"10.1002/appl.202300121","DOIUrl":"https://doi.org/10.1002/appl.202300121","url":null,"abstract":"Carbon nanotubes (CNTs) have attracted interest for optoelectronic applications due to their unique electronic and optoelectronic properties. In particular, Multi‐Wall (MW) CNTs film acts as perfect photo‐collector surface with the possibility to tune the absorbance by controlling the film thickness. In this work, we demonstrate two types of hybrid Si‐MWCNTs photodetectors. The MWCNTs are solution‐ processed and deposited on n‐silicon substrate covered by two different dielectrics (Si3N4 or SiO2). The MWCNTs/SiO2/n‐Si device is used here as reference, since the SiO2/Si system is the most widely investigated structure in microelectronics. The electrical and optical characteristics of the reference device are compared with the corresponding of our basic MWCNTs/Si3N4 /n‐Si device. The MWCNTs are deposited on the substrate with the drop casting technique. Optical performance of the SiO2 device is comparable to the Si3N4 device thus revealing a quite interesting response under UV illumination. The Si3N4 device exhibited a peak Equivalent Quantum Efficiency (EQE) of 57% at 3μW of source illumination power, thus demonstrating a superior performance as compared to the SiO2 device (EQE of up to 55%, which is also promising for future applications). This performance can be attributed to the great absorption in UV region of CNTs layer. Apart from this technological goal, we also investigated how MWCNTs/Si3N4 or MWCNTs/SiO2 heterojunctions perform using standard electrical characterization techniques and how the presence of the CNTs change the dielectric characteristics of both substrates.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"32 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139778364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simple mechanochemical synthesis, characterization, optical and thermoelectric properties of a nanostructured silver (I) selenide semiconductor 纳米结构硒化银 (I) 半导体的简单机械化学合成、表征、光学和热电特性

Applied Research Pub Date : 2024-02-14 DOI: 10.1002/appl.202300076

M. Achimovičová, Katarína Gáborová, Vladimír Girman, E. Dutková, Jaroslav Briančin, P. Levinský, V. Puchý

{"title":"Simple mechanochemical synthesis, characterization, optical and thermoelectric properties of a nanostructured silver (I) selenide semiconductor","authors":"M. Achimovičová, Katarína Gáborová, Vladimír Girman, E. Dutková, Jaroslav Briančin, P. Levinský, V. Puchý","doi":"10.1002/appl.202300076","DOIUrl":"https://doi.org/10.1002/appl.202300076","url":null,"abstract":"Silver(I) selenide, Ag2Se was very simply and conveniently prepared from Ag and Se powders in a stoichiometric ratio by one‐step mechanochemical synthesis after 10 min of milling in a planetary ball mill. The kinetics of this synthesis and the structural, morphological, optical, and thermoelectric properties of the product were studied. The crystal structure, physical properties, and morphology were characterised by X‐ray diffraction, specific surface area measurements, particle size distribution analysis, scanning and transmission electron microscopy. XRD confirmed the orthorhombic crystal structure of naumannite, Ag2Se. The electron microscopy revealed that the nanostructured product consisted of isolated rod‐shaped particles and agglomerated nanoparticles of irregular shape which formed clusters with a size > 30 μm. Crystallinity was inspected by selected area diffraction. The optical properties were studied using UV‐Vis and photoluminescence spectroscopy. The determined band gap energy of 1.15 eV was blue‐shifted relative to the bulk Ag2Se. For the densification of mechanochemically synthesized powdered Ag2Se, the spark plasma sintering method was applied to prepare a suitable sample for thermoelectric characterization. High‐temperature thermoelectric properties were evaluated in terms of the potential application of mechanochemically synthesized Ag2Se in energy conversion.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"42 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139778105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilizing Fungal Biodegradation for Valorisation of Lignocellulosic Waste Biomass and Its Diverse Applications 利用真菌生物降解技术实现木质纤维素废料生物质的增值及其多样化应用

Applied Research Pub Date : 2024-02-13 DOI: 10.1002/appl.202300119

Prerna Mehta, Dinesh Kumar Chelike

{"title":"Utilizing Fungal Biodegradation for Valorisation of Lignocellulosic Waste Biomass and Its Diverse Applications","authors":"Prerna Mehta, Dinesh Kumar Chelike","doi":"10.1002/appl.202300119","DOIUrl":"https://doi.org/10.1002/appl.202300119","url":null,"abstract":"Myco degradation is an effective technique for breaking down waste plant substances made of lignin, cellulose, and hemicellulose, which are collectively known as lignocellulose. This abundant organic material is found throughout the world. Due to its recalcitrant nature, lignocellulose poses a challenge for efficient conversion into biofuels, biochemicals, and other valuable products. Myco degradation, which involves the use of fungi to degrade lignocellulosic materials, offers a sustainable and cost‐efficient resolution to this challenge. This review provides an overview of the mechanisms and applications of myco degradation for lignocellulosic biomass degradation. The review discusses the various types of fungi involved in lignocellulose degradation, their enzymatic systems, and the factors that influences their performance. Furthermore, the potential applications of myco degradation products, such as biofuels, enzymes, and bioplastics, are reviewed. It also highlights the implications of myco degradation for waste management and sustainable development. Overall, myco degradation represents a promising technology for the efficient deprivation of lignocellulosic waste biomass, and further research in this field holds great potential for the sustainable creation of bio‐based products.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"57 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139841777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Membrane‐based mechanical characterization of screen‐printed inks: deflection analysis of ink layers on polyimide membranes 基于膜的丝网印刷油墨机械特性分析：聚酰亚胺膜上油墨层的变形分析

Applied Research Pub Date : 2024-02-10 DOI: 10.1002/appl.202300113

Eléonore Masarweh, Mariia Arseenko, Philippe Guaino, Denis Flandre

引用次数: 0

Enhancing Attraction and Aggregation of Desert Locusts for Efficient Harvesting: Push‐Pull Approach 增强沙漠蝗虫的吸引力和聚集能力，以实现高效收获：推拉法

Applied Research Pub Date : 2024-02-07 DOI: 10.1002/appl.202300108

Joseph Odhiambo Aguk, Collins Kalwale Mweresa, M. Ayieko

{"title":"Enhancing Attraction and Aggregation of Desert Locusts for Efficient Harvesting: Push‐Pull Approach","authors":"Joseph Odhiambo Aguk, Collins Kalwale Mweresa, M. Ayieko","doi":"10.1002/appl.202300108","DOIUrl":"https://doi.org/10.1002/appl.202300108","url":null,"abstract":"Desert locusts (Schistocerca gregaria) pause a significant threat to food security. However, they also serve as a nutrient‐rich delicacy in many African and Arabic communities where they are traditionally harvested for food and feed. Traditional harvesting methods are inefficient, laborious and time‐consuming hence, the need to explore more convenient and efficient techniques. This study assessed preferential selection and feeding behavior of desert locusts to identify trap plants that could attract and aggregate them for easy harvesting. Four trap plants (cowpea, finger millet, sorghum, and amaranth) and four repellent plants (neem, pencil cactus, garlic, and cayenne red pepper) were evaluated through multiple‐choice experiments. A randomized complete block design (RCBD), mature adult, immature adult and hopper stages of desert locust were involved. ANOVA was used to determine effects of repellent and trap plants on feeding preferences of desert locusts. Mean differences between treatments at p<0.05 were separated using post‐hoc Tukey HSD. Cowpea as the most preferred trap plant attracted 62.7%, 70.7% and 76.9% of mature adult, immature adult and hopper locust stages, respectively. Neem exhibited the most potent repellent effect and attracted no desert locust for feeding. Neem repelled locusts thereby reducing infestation and damage of cowpea as a pull plant when both plants were grown in the same pot in a \"push‐pull\" system. The push‐pull attracted 3.7%, 24.3% and 7.8% of mature adult, immature adult and hopper locust stages, respectively. However, cowpea attracted large numbers of locusts (96.3% mature adults, 75.7% immature adults and 92.2% hoppers) when grown separately from neem. These findings provide valuable insights on the potential of exploiting trap and repellents to enhance aggregation and harvesting of desert locusts as food and feed.This article is protected by copyright. All rights reserved.","PeriodicalId":503210,"journal":{"name":"Applied Research","volume":"44 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139856354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0