Journal of Science: Advanced Materials and Devices最新文献

Research article: Wideband absorption with polarization and angular insensitive metamaterial for optical applications based on Tungsten-SiO2 composites

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-03-22 DOI: 10.1016/j.jsamd.2025.100878

Md Raihan , Saif Hannan , Md Ismail Haque , Mohamed Ouda , Abdulmajeed M. Alenezi , Mohamed S. Soliman , Mohammad Tariqul Islam

{"title":"Research article: Wideband absorption with polarization and angular insensitive metamaterial for optical applications based on Tungsten-SiO2 composites","authors":"Md Raihan , Saif Hannan , Md Ismail Haque , Mohamed Ouda , Abdulmajeed M. Alenezi , Mohamed S. Soliman , Mohammad Tariqul Islam","doi":"10.1016/j.jsamd.2025.100878","DOIUrl":"10.1016/j.jsamd.2025.100878","url":null,"abstract":"<div><div>Energy harvesting from solar light is a matter of interest nowadays. In this discipline, researchers are attempting to achieve significant success in this field at a low cost and with minimal effort. To harness this solar energy, metamaterial absorbers (MMA) demonstrated a simple new method to collect these electromagnetic (EM) waves for use in solar energy. Furthermore, broadband absorbers are the best alternative for properly using solar energy. In this paper, we propose a shield pattern of Martii-shaped metamaterial absorber with polarization-insensitive for an optical regime made of dielectric material silicon dioxide (SiO<sub>2</sub>) and the metal tungsten (W), which serves as the top resonant material and back blocking plate. A 96.93 % average absorption rate was found for visible 380 nm–700 nm, along with a maximum peak absorption point at 604.53 nm, which is 99.996 %. Moreover, above 99 % absorption was found for 561.6–650.16 nm, and from 601 to 608 nm, the rate is above 99.99 %. Our MMA exhibits excellent average absorption of 96.27 % throughout the whole operation band range of 360 nm–1200 nm in TE and TM mode. Additionally, it is independent of polarization and incident angle. Its strong absorption and other properties make it well-suited for photonic applications, particularly in solar photovoltaics (PV), sensors etc.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100878"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible multilayered ceramics: Engineering strength and resilience

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-03-19 DOI: 10.1016/j.jsamd.2025.100874

H. Yazdani Sarvestani, J. Patel, E. Azad, B. Ashrafi

{"title":"Flexible multilayered ceramics: Engineering strength and resilience","authors":"H. Yazdani Sarvestani, J. Patel, E. Azad, B. Ashrafi","doi":"10.1016/j.jsamd.2025.100874","DOIUrl":"10.1016/j.jsamd.2025.100874","url":null,"abstract":"<div><div>While offering exceptional hardness and durability, traditional ceramics are inherently brittle, limiting their use in applications requiring flexibility and impact resistance. This study investigates the mechanical performance of soft, multilayered ceramics, focusing on how hexagonal tile size, adhesive interlayer thickness, and layer configuration influence flexural compliance, penetration resistance, and energy absorption. Using a precision digital laser manufacturing platform, industrial-grade alumina ceramic sheets were laser-cut into 2.5 mm and 5 mm hexagonal tiles, then laminated with adhesive layers to fabricate soft ceramic beams. Experimental results from 4-point bending and penetration tests reveal that smaller tile sizes and thinner adhesive layers enhance flexural compliance, achieving up to a 35 % improvement in flexibility compared to larger tiles and thicker adhesives. Conversely, larger tiles and thicker adhesives improve penetration resistance by up to 28 %, offering superior protection against localized impacts. Configurations featuring larger tiles and thicker adhesive layers also achieved a 42 % increase in energy absorption, demonstrating their ability to store more energy under localized forces. Failure modes varied across configurations, with smaller tiles predominantly exhibiting tilting failure while larger tiles fractured more uniformly under penetration loading. Compared to traditional ceramic armor and bioinspired nacre-like materials, the developed soft ceramics exhibit significantly higher weight-specific compliance while maintaining competitive penetration resistance and energy absorption. This novel integration of laser-cutting, adhesive bonding, and structural optimization enables the development of lightweight, durable, and flexible ceramics for personal protective equipment, aerospace, and automotive applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100874"},"PeriodicalIF":6.7,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Si/Pyrex glass and poly(dimethylsiloxane)-based microfluidic devices with integrated heating elements for TiO2 nanoparticle synthesis

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-03-18 DOI: 10.1016/j.jsamd.2025.100877

Milena Rašljić Rafajilović , Katarina Radulović , Marija V. Pergal , Jovan Blanuša , Vladimir Rajić , Nikola Cvjetićanin , Dana Vasiljević-Radović

{"title":"Si/Pyrex glass and poly(dimethylsiloxane)-based microfluidic devices with integrated heating elements for TiO2 nanoparticle synthesis","authors":"Milena Rašljić Rafajilović , Katarina Radulović , Marija V. Pergal , Jovan Blanuša , Vladimir Rajić , Nikola Cvjetićanin , Dana Vasiljević-Radović","doi":"10.1016/j.jsamd.2025.100877","DOIUrl":"10.1016/j.jsamd.2025.100877","url":null,"abstract":"<div><div>This paper presents two microreactors used to synthesize titanium(IV) oxide (TiO<sub>2</sub>) nanoparticles. The microreactors under investigation incorporate integrated heaters and possess distinct microchannel dimensions. The first microreactor comprises silicon and Pyrex glass, with its integrated heater produced through p-type diffusion. Conversely, the second microreactor is constructed from polydimethylsiloxane (PDMS) and features a wire-based integrated heater. Recognizing the significance of temperature control in the synthesis process, both experimental and simulation results pertaining to the behavior of the microreactor heaters are provided. The synthesis of TiO<sub>2</sub> nanoparticles serves as a means to validate the efficacy of the microreactors. Comparative analysis reveals that the PDMS microreactor exhibits superior functionality when compared to the silicon/Pyrex glass counterpart. It has been demonstrated that upon a reaction time of 2 min within the microreactors, amorphous nanoparticles are formed, accompanied by partially developed crystallites corresponding to the anatase and rutile phases. Subsequent heating facilitates the complete conversion of the amorphous phase into the anatase phase. The utilization of a PDMS microreactor exhibits a heightened suitability for the synthesis of TiO<sub>2</sub> nanoparticles with good photocatalytic efficiency, achieving 93.59 % methylene blue (MB) degradation after 90 min. This suitability arises from several key factors: enhanced production speed, the cost-effectiveness inherent in the material, and the prevention of channel blockage attributed to calcification during the reaction process.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100877"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Iron oxide nanoparticles enhancing magnetic resonance imaging: A review of the latest advancements

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-03-13 DOI: 10.1016/j.jsamd.2025.100875

Samia Faisal O. Aboushoushah

{"title":"Iron oxide nanoparticles enhancing magnetic resonance imaging: A review of the latest advancements","authors":"Samia Faisal O. Aboushoushah","doi":"10.1016/j.jsamd.2025.100875","DOIUrl":"10.1016/j.jsamd.2025.100875","url":null,"abstract":"<div><div>This review explores the advancements in iron oxide nanoparticles (IONPs) as MRI contrast agents, emphasizing their synthesis, surface engineering, and impact on MRI contrast enhancement. While gadolinium-based contrast agents (GBCAs) remain the clinical standard for T<sub>1</sub>-weighted imaging, their safety concerns have driven research toward IONPs as promising alternatives. Ultra-small IONPs (<5 nm) exhibit strong T<sub>1</sub> contrast enhancement, while larger IONPs (>20 nm) provide superior T<sub>2</sub> contrast due to their high r<sub>2</sub> relaxivity. Additionally, recent developments in T<sub>1</sub>/T<sub>2</sub> switchable IONPs enable dynamic contrast modulation through controlled size, shape, and stimuli-responsive surface modifications, enhancing tumour imaging specificity. This review examines diverse surface engineering strategies, including protein, polysaccharide, polymer, lipid, mesoporous silica, and hybrid coatings, that enhance biocompatibility, circulation time, and targeting efficiency. Despite their potential, IONPs face challenges in clinical translation, including regulatory hurdles, inconsistent targeting efficiency, and long-term safety concerns. Addressing these limitations through optimized formulations, biocompatibility-focused designs, and rigorous preclinical evaluation will be crucial for their successful integration into clinical MRI diagnostics. Our findings suggest that IONPs not only mitigate many limitations of conventional contrast agents but also pave the way for precision imaging and personalized medicine, redefining the future of MRI contrast technology.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100875"},"PeriodicalIF":6.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143683365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of pH and annealing temperature on hematite (α-Fe2O3) nanoparticle synthesis with pine needle extract and investigation of structural, magnetic, and dielectric properties

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-03-12 DOI: 10.1016/j.jsamd.2025.100876

Kamaran Bakhtiar , Bruska Azhdar

{"title":"Influence of pH and annealing temperature on hematite (α-Fe2O3) nanoparticle synthesis with pine needle extract and investigation of structural, magnetic, and dielectric properties","authors":"Kamaran Bakhtiar , Bruska Azhdar","doi":"10.1016/j.jsamd.2025.100876","DOIUrl":"10.1016/j.jsamd.2025.100876","url":null,"abstract":"<div><div>This study used pine needle extract, a green method, to synthesize hematite-phase iron oxide nanoparticles. The structural, magnetic, and dielectric properties of the hematite nanoparticles synthesized at varying pH, or potential hydrogen, conditions and subjected to different annealing temperatures were examined. X-ray diffraction (XRD) was used to confirm the hexagonal hematite crystalline structure and demonstrated a significant variation in crystallite size from 7.28 to 27.36 nm at 500 °C and from 43 to 46 nm at 750 °C for different pH values. Fourier transform infrared spectroscopy (FTIR) indicated the presence of two absorption bands at 465–475 cm<sup>−1</sup> and 551–559 cm<sup>−1</sup> associated with the bending and stretching of Fe–O. UV–Vis DRS exhibited semiconducting properties, with allowed direct and indirect band gaps reducing from roughly 2.05−2.25 eV at 500 °C to 1.29−1.88 eV at 750 °C, implying a quantum confinement effect. The influence of pH and annealing temperature on the magnetic properties of hematite nanoparticles was also studied with a vibrating sample magnetometer (VSM), revealing variations in saturation magnetization, residual magnetization, and coercivity force. An LCR meter was used to analyze the frequency dependence of the real and imaginary components of the permittivity, dielectric loss tangent, and AC conductivity. The results highlight that synthesis issues, especially pH and annealing temperature, are crucial in modulating the physicochemical features of hematite nanoparticles.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100876"},"PeriodicalIF":6.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developing G-T-B glass system doped holmium oxide for radiation absorption and optical applications

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-03-12 DOI: 10.1016/j.jsamd.2025.100872

M.I. Sayyed , M.H.A. Mhareb , Kawa M. Kaky , K.A. Mahmoud , Abed Jawad Kadhim , Yasser Maghrbi

{"title":"Developing G-T-B glass system doped holmium oxide for radiation absorption and optical applications","authors":"M.I. Sayyed , M.H.A. Mhareb , Kawa M. Kaky , K.A. Mahmoud , Abed Jawad Kadhim , Yasser Maghrbi","doi":"10.1016/j.jsamd.2025.100872","DOIUrl":"10.1016/j.jsamd.2025.100872","url":null,"abstract":"<div><div>The current work developed and fabricated three groups of the Ho<sub>2</sub>O<sub>3</sub>-doped G-T-B (germanate-telluride-borate) glass system via melt-quenching followed by an annealing process with a chemical formula of [33.75B<sub>2</sub>O<sub>3</sub>-20TeO<sub>2</sub>-10GeO<sub>2</sub>-35MgO-1.25Ho<sub>2</sub>O<sub>3</sub>], [32.5B<sub>2</sub>O<sub>3</sub>-20TeO<sub>2</sub>-10GeO<sub>2</sub>-35MgO-2.5Ho<sub>2</sub>O<sub>3</sub>], and [31.25B<sub>2</sub>O<sub>3</sub>-20TeO<sub>2</sub>-10GeO<sub>2</sub>-35MgO-3.75 Ho<sub>2</sub>O<sub>3</sub>]. The synthesized glasses are clear, yellow, transparent, homogeneous, and bubble-free. The glassy nature has been examined by utilizing X-ray diffraction. Optical absorption for Ho1.25, Ho2.5, and Ho3.75 has been recorded; based on these records, the Mott and Davis relation was used to determine the energy band gap. An Archimedes' theory-based sensitive density balance was used to find the densities (ρ) of all the materials studied. The mechanical characteristics were theoretically determined using the Makishima–Mackenzie model. Monte Carlo simulation over the 0.015–2.506 MeV energy range was employed to investigate the fabricated glass samples' γ-ray shielding features. The study found that increased Ho<sub>2</sub>O<sub>3</sub> across the concentration of 1.25–3.75 mol% increased the fabricated glasses' linear attenuation coefficient (LAC) by 19.56 % at 0.015 MeV, 20.22 % at 0.122 MeV, 5.31 % at 0.662 MeV, and 4.42 % at 2.506 MeV. A slight radiation protection efficiency increase followed this LAC enhancement, while the half-value thickness, thickness equivalent lead, and transmission factor were reduced when the Ho<sub>2</sub>O<sub>3</sub> content grew within the fabricated glasses.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100872"},"PeriodicalIF":6.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional prospects of physical vapor-deposited silver-based metal-dielectric nanocomposite thin films

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-02-27 DOI: 10.1016/j.jsamd.2025.100871

Mohammad Nur-E-Alam , Boon Kar Yap , Mohammad Khairul Basher , Mohammad Aminul Islam , M. Khalid Hossain , Manzoore Elahi M. Soudagar , Narottam Das , Mikhail Vasiliev , Tiong Sieh Kiong

{"title":"Multifunctional prospects of physical vapor-deposited silver-based metal-dielectric nanocomposite thin films","authors":"Mohammad Nur-E-Alam , Boon Kar Yap , Mohammad Khairul Basher , Mohammad Aminul Islam , M. Khalid Hossain , Manzoore Elahi M. Soudagar , Narottam Das , Mikhail Vasiliev , Tiong Sieh Kiong","doi":"10.1016/j.jsamd.2025.100871","DOIUrl":"10.1016/j.jsamd.2025.100871","url":null,"abstract":"<div><div>Silver-based metallic thin-film nanostructured materials are extensively utilized in advanced technological applications, including sensors, energy-efficient coatings, antibacterial coatings, and optical filters. Physical vapor deposition has emerged as a significant technique for synthesizing silver (Ag)-based nanocomposites, enabling the modification of structural and optical properties of thin metallic films. This advancement facilitates material development and applications in electronics, catalysis, magnetics, optics, environmental and health sectors, and specialized optical coatings. Research has demonstrated the successful integration of various nanomaterials with Ag matrices, resulting in multifunctional thin-film systems. Ag-based nanocomposite thin films exhibit exceptional electrical conductivity, rendering them suitable for electronic and optoelectronic devices. Their unique optical properties enable applications in advanced photonics, spectroscopy, and imaging technologies. These films also demonstrate potential in catalysis, power conversion and storage, environmental remediation, and chemical sensing. The incorporation of antimicrobial agents presents opportunities for biomedical applications. This review aims to comprehensively examine the synthesis, characterization, and potential applications of physically vapor-deposited Ag-based nanocomposite thin films, highlighting their promising future in various fields.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100871"},"PeriodicalIF":6.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetic and pH-Sensitive dual actuation of biohybrid microswimmer of targeted drug release suitable for cancer cell microenvironment

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-02-27 DOI: 10.1016/j.jsamd.2025.100873

Richa Chaturvedi , Yumin Kang , Yunji Eom, Sri Ramulu Torati , CheolGi Kim

{"title":"Magnetic and pH-Sensitive dual actuation of biohybrid microswimmer of targeted drug release suitable for cancer cell microenvironment","authors":"Richa Chaturvedi , Yumin Kang , Yunji Eom, Sri Ramulu Torati , CheolGi Kim","doi":"10.1016/j.jsamd.2025.100873","DOIUrl":"10.1016/j.jsamd.2025.100873","url":null,"abstract":"<div><div>The chemotherapeutic agents most frequently used in cancer treatment often have limited effectiveness because of their low specificity for tumors and poor therapeutic performance. In addition to the aforementioned therapeutic challenges the drug delivery carriers conjugated with the drug encounter early detection and elimination from the immune system before arriving at the affected area continues to be a significant research focus among researchers. To address this prevalent issue, an effective approach has been developed that leverages the physiological differences between normal and tumor tissue to enhance the efficacy of anticancer drugs. This drug delivery system is designed based on pH-sensitive drug release, ensuring targeted release within cancer cells. In the present study, we have developed a drug carrier called as biohybrid magnetic microswimmer (BMM). The BMM was formed through a three-step process: firstly, bacterial surfaces were functionalized with biotinylated PEG which enables the bacteria to escape the phagocytosis process; secondly, the anticancer drug lenalidomide was PEGylated to enhance solubility; and finally, both complexes were conjugated via streptavidin-biotin interaction. The study investigated bond formation, bacterial viability after drug treatment, pH-dependent release, and cytotoxicity in various cell lines (MCF-7 and THP-1 cells), and the results revealed that the concentration of the drug, released from BMM gradually increased as the pH of the solvent decreased from neutral to acidic, mimicking the surrounding environment of normal cells and cancer cells, respectively, which in turn affects the cancer cell viability negatively. Therefore, BMM shows promise in targeted drug delivery, utilizing magnetic manipulation and pH-triggered release, providing advantages that include bacteria's maneuverability and PEG's stealth properties, enhancing drug efficacy.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100873"},"PeriodicalIF":6.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corona triode poling of P(VDF-TrFE) nanofibers: Mechanisms and optimization strategies

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-02-25 DOI: 10.1016/j.jsamd.2025.100870

Leonardo Gasperini, Giacomo Selleri, Davide Pegoraro, Daniele Mariani, Alberto Rumi, Paolo Seri, Davide Fabiani

{"title":"Corona triode poling of P(VDF-TrFE) nanofibers: Mechanisms and optimization strategies","authors":"Leonardo Gasperini, Giacomo Selleri, Davide Pegoraro, Daniele Mariani, Alberto Rumi, Paolo Seri, Davide Fabiani","doi":"10.1016/j.jsamd.2025.100870","DOIUrl":"10.1016/j.jsamd.2025.100870","url":null,"abstract":"<div><div>The effectiveness of the poling process of poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers is essential for their use in engineering applications (i.e., artificial piezoelectric skins, self-sensing composite materials). While traditional contact poling methods present electrical breakdown risks through the highly porous nanofibrous membranes, the corona poling technique offers a non-contact alternative, utilizing ion generation to polarize piezoelectric materials without direct interaction between the high-voltage electrode and the sample. The corona poling process is well-established for P(VDF-TrFE) thin films, but literature lacks a reliable methodology for P(VDF-TrFE) nanofibers. This study addresses this gap by systematically investigating the differences between the corona poling of P(VDF-TrFE) films and nanofibers and aims to disclose the distinct physical mechanisms involved. First, the corona triode setup is optimized for P(VDF-TrFE) films, achieving a piezoelectric strain coefficient <span><math><mrow><msub><mi>d</mi><mn>33</mn></msub></mrow></math></span> of 23 pC N<sup>−1</sup>. The parameters of the corona setup are then methodically recalibrated for the nanofiber's polarization, with the rationale behind these adjustments discussed and validated through experimental investigations. Such a refined corona poling method leads to a <span><math><mrow><msub><mi>d</mi><mn>33</mn></msub></mrow></math></span> equal to −20.8 pC N<sup>−1</sup> for the nanofibers, contemporary allowing for a comprehensive understanding of the physical mechanisms behind the two distinct methods.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100870"},"PeriodicalIF":6.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced Braille recognition based on protein biomimetic skin mechanical sensors

IF 6.7 3区材料科学

Journal of Science: Advanced Materials and Devices Pub Date : 2025-02-24 DOI: 10.1016/j.jsamd.2025.100869

Nianfeng Zhang , Ailing Yang , Andeng Liu , Guoxi Shao , Xixi Wang , Yingjin Luo , Zhihua Liu , Yating Shi , Na Li , Wenxi Guo , Wu Qiu , Dapeng Yang

{"title":"Advanced Braille recognition based on protein biomimetic skin mechanical sensors","authors":"Nianfeng Zhang , Ailing Yang , Andeng Liu , Guoxi Shao , Xixi Wang , Yingjin Luo , Zhihua Liu , Yating Shi , Na Li , Wenxi Guo , Wu Qiu , Dapeng Yang","doi":"10.1016/j.jsamd.2025.100869","DOIUrl":"10.1016/j.jsamd.2025.100869","url":null,"abstract":"<div><div>Tactile perception, dominated by human skin, plays an important role in human-nature interaction, especially when visual perception is limited. The key to mimicking skin tactile perception is to address skin-like properties of materials and integration of biomimetic tactile functions. To be competent in bionic skin, composite silk fibroin (SF) films possessing high tensile properties (159.71 %) and hydrogels with elasticity (54.42 %) were prepared through a mesoscopic reconstruction strategy of SF materials, using fish scale gelatin molecules as mesoscopic templates to regulate the nucleation and crystallization kinetics of SF molecules. In addition, inspired by the mechanoreceptors, a bimodal protein bionic skin (BPBS) was prepared by horizontally integrating a single-electrode triboelectric sensor and a capacitive sensing array, which can work in sliding and pressing modes to mimic the sliding touch and pressing touch of the finger, respectively. The system achieves a 99 % Braille recognition accuracy in sliding mode through a deep learning algorithm, and Bluetooth technology enables real-time wireless Braille recognition in pressing mode, synergistically enhancing the robustness and practicality of BPBS. This research provides novel insights into enhancing human touch perception, human-computer interaction, and the advancement of intelligent prosthetics, marking a significant stride in the development of bionic skins with multimodal sensing capabilities.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100869"},"PeriodicalIF":6.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0