Science and Technology of Advanced Materials最新文献

{"title":"Celebrating Dr. Katsuhiko Ariga's 60th birthday: from Nanotechnology to Nanoarchitectonics.","authors":"Masanobu Naito, Ajayan Vinu, Yusuke Yamauchi","doi":"10.1080/14686996.2025.2532290","DOIUrl":"https://doi.org/10.1080/14686996.2025.2532290","url":null,"abstract":"","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2532290"},"PeriodicalIF":6.9,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12320254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785189","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}

{"title":"High-quality epitaxial, homogeneous anatase thin films by on-site controlled hydrolysis on LaAlO₃ substrates and characterization.","authors":"Sudu Hakuruge Dilan Priyankara Wijekoon, Kosuke Ono, Masaru Shimomura, Takahiko Kawaguchi, Naonori Sakamoto, Naoki Wakiya","doi":"10.1080/14686996.2025.2518747","DOIUrl":"10.1080/14686996.2025.2518747","url":null,"abstract":"<p><p>The anatase form of TiO₂ is a widely studied material due to its broad range of applications. Epitaxial anatase thin films have attracted significant attention because of their enhanced electrical and optical properties. However, fabricating anatase thin films remains challenging due to their metastability and the need for highly sophisticated fabrication techniques. On-site controlled hydrolysis is a simple, cost-effective, and rapid method for producing smooth, compact thin films on various surfaces. In this study, we demonstrate a straightforward approach to fabricating highly oriented epitaxial anatase thin films on LaAlO₃ substrates using different solvent mixtures. The epitaxial orientation and film quality were analyzed using X-ray diffraction pole figures and rocking curves, while surface morphology was characterized by Scanning electron microscopy and atomic force microscopy. Our results indicate that thin film quality and morphology are primarily influenced by the annealing temperature rather than the choice of solvent or titanium precursor, confirming the feasibility of a scalable, low-cost epitaxial fabrication technique for anatase thin films.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2518747"},"PeriodicalIF":7.4,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12261510/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144643326","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}

{"title":"<ArticleTitle xmlns:ns0=\"http://www.w3.org/1998/Math/MathML\">Exploring partially reduced CeO <ns0:math><ns0:msub><ns0:mi> </ns0:mi> <ns0:mn>2</ns0:mn></ns0:msub> </ns0:math> (111) surface at the atomic scale using scanning probe microscopy.","authors":"Kyungmin Kim, Masayuki Abe, Shigeki Kawai, Oscar Custance","doi":"10.1080/14686996.2025.2528596","DOIUrl":"https://doi.org/10.1080/14686996.2025.2528596","url":null,"abstract":"<p><p>Cerium dioxide (CeO <math><msub><mi> </mi> <mn>2</mn></msub> </math> ) is extensively studied due to its exceptional redox properties, which are closely related to oxygen vacancy formation and the associated charging of cerium atoms from Ce <math><msup><mi> </mi> <mrow><mn>4</mn> <mo>+</mo></mrow> </msup> </math> to Ce <math><msup><mi> </mi> <mrow><mn>3</mn> <mo>+</mo></mrow> </msup> </math> . These charged species play an important role in promoting active sites in CeO <math><msub><mi> </mi> <mn>2</mn></msub> </math> -based catalysts. The existence of Ce <math><msup><mi> </mi> <mrow><mn>3</mn> <mo>+</mo></mrow> </msup> </math> atoms is typically characterized by means of surface spectroscopic techniques, because the direct atomic-scale observation and discrimination of Ce <math><msup><mi> </mi> <mrow><mn>3</mn> <mo>+</mo></mrow> </msup> </math> ions from Ce <math><msup><mi> </mi> <mrow><mn>4</mn> <mo>+</mo></mrow> </msup> </math> atoms remains challenging. Here, we use simultaneous scanning tunneling microscopy (STM) and atomic force microscopy (AFM) complemented by force spectroscopy to characterize candidates to Ce <math><msup><mi> </mi> <mrow><mn>3</mn> <mo>+</mo></mrow> </msup> </math> atoms on partially reduced CeO <math><msub><mi> </mi> <mn>2</mn></msub> </math> (111) samples. While STM images reveal electronic modulations of the atomic contrast in the form of an inhomogeneous shading, AFM clearly differentiates these electronic features from the true topographic atomic structure. The chemical reactivity of these candidates to Ce <math><msup><mi> </mi> <mrow><mn>3</mn> <mo>+</mo></mrow> </msup> </math> atoms is quantified against the Ce <math><msup><mi> </mi> <mrow><mn>4</mn> <mo>+</mo></mrow> </msup> </math> counterparts by means of force spectroscopy using carbon monoxide functionalized probes. This study demonstrates that the combination of STM with AFM and force spectroscopy bears great potential to provide robust atomic-level insights into the chemistry of defects at ceria surfaces.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2528596"},"PeriodicalIF":6.9,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12320253/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785188","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}

{"title":"Highly stretchable transparent Ag nanowire-polyurethane hybrid bilayer electrodes for multifunctional applications.","authors":"Fang Luo, Seo-Yun Choi, Yewon Lee, Jun-Hyeok Kang, Joon Jang, Hyun-Jung Jung, Seungmin Lee, Ji-Yoon Chae, Han-Ki Kim","doi":"10.1080/14686996.2025.2528595","DOIUrl":"10.1080/14686996.2025.2528595","url":null,"abstract":"<p><p>We developed an Ag nanowire-polyurethane (AgNW-PU) mixed electrode on a PU substrate with an optimized bilayer structure for highly stretchable and wearable strain sensors. In the AgNW-PU mixed composite, PU functioned as a stretchable matrix, preserving the high conductivity and transparency of the AgNW network even under applied mechanical stress. The AgNW-rich bottom layer (25:1) provided an effective conduction path, whereas the PU-rich top layer provided mechanical support and elasticity, improving the durability of the electrode under repeated stretching and bending cycles. With the optimized bilayer (AgNW-PU 100:1/25:1), the AgNW-PU bilayer electrode exhibited a low sheet resistance of 26.3 Ω/square and a high transparency of 86.4%. Compared with the AgNW-PU single-layer electrode, the bilayer electrode exhibited superior stretchability, as confirmed by various applications, such as heater devices, strain sensors, and interconnectors. An optimized AgNW-PU bilayer electrode exhibited heat generation of 90°C with 7 V applied even after 15% stretching. The gauge factor of the optimized electrode increased from 8 to 11.2 even as the bending degree increased from 30° to 90°. The AgNW-PU bilayer electrode also demonstrated potential as a stretchable interconnector for various next-generation electronic applications.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2528595"},"PeriodicalIF":6.9,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12312144/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144761186","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}

{"title":"Room-temperature bulk photovoltaic effect in a terthiophene-based ferroelectric liquid crystal bearing dilactate side chains.","authors":"Masahiro Funahashi, Yasuko Koshiba, Shohei Horike, Shinobu Uemura","doi":"10.1080/14686996.2025.2525058","DOIUrl":"10.1080/14686996.2025.2525058","url":null,"abstract":"<p><p>Room-temperature bulk photovoltaic effect of a ferroelectric liquid crystal based on diphenylterthiophene bearing dilactate side chains is provided in this study. In the polarized smectic phase of this compound, the improved bulk photovoltaic effect was observed without electron acceptors, indicating the open-circuit voltage of 1.1 V. A time-of-flight measurement revealed that the hole and electron mobilities were retained to be over 1 × 10^-3 cm²V^-1s^-1 at room temperature. Dielectric relaxation spectra exhibited that the relaxation of dipolar fluctuation shifted from 10⁵ Hz to 10⁴ Hz in the polarized smectic phase, indicating suppression of thermal motion of the polar side chains. By doping a fullerene derivative as an electron acceptor, the performance of the bulk photovoltaic effect was also enhanced at room temperature, indicating the power conversion efficiency of 0.24 %. The double chiral structure of the dilactate side chain should restrict the conformation of the carbonyl groups in the side chains to enhance packing of the π-conjugated units and to stabilize the polarized structure of the smectic phase.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2525058"},"PeriodicalIF":6.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12302393/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144732982","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}

{"title":"Reduced hysteresis in La_0.7Ce_0.3Fe_11.5Si_1.5 hydrides by grain size reduction.","authors":"Mitali Madhusmita Prusty, Sri Harsha Molleti, Hiroto Takanobu, Sai Rama Krishna Malladi, Xin Tang, Hossein Sepehri-Amin","doi":"10.1080/14686996.2025.2525742","DOIUrl":"10.1080/14686996.2025.2525742","url":null,"abstract":"<p><p>Magnetic cooling technology, based on the magnetocaloric effect (MCE), offers an energy-efficient and eco-friendly alternative to conventional gas compression, but is often hindered by large magnetic hysteresis, which limits cyclic performance. In this study, we show that the hysteresis of La_0.7Ce_0.3(Fe,Si)₁₃ hydrides - a promising material for room-temperature refrigeration - can be significantly reduced by refining the microstructure of the precursor alloy. Substituting Ce for La in (La_0.7Ce_0.3)(Fe,Si)₁₃H_x increases hysteresis losses from 12.3 J/kg to 34 J/kg. However, preparing the precursor alloy using the melt-spinning technique can almost eliminate this hysteresis. Lorentz transmission electron microscopy (Lorentz-TEM) shows that phase transition nucleation preferentially occurs at the grain boundaries. The hydrides prepared from melt-spun ribbons exhibit a much larger volume fraction of grain boundaries due to finer grains, providing a higher density of nucleation sites. This reduces the energy barrier for the phase transition and weakens the magneto-structural phase transition, as confirmed by <i>in-situ</i> X-ray diffraction patterns. Consequently, the reduced phase transition energy barrier leads to significantly lower hysteresis in melt-spun hydrides samples. These findings demonstrate the potential of microstructure engineering to reduce hysteresis in (La,Ce)(Fe,Si)₁₃Hₓ materials for room-temperature magnetocaloric applications.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2525742"},"PeriodicalIF":6.9,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12312218/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144761187","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}

{"title":"Sustainable and robust biomass-based binder for silicon anodes in lithium-ion batteries: cross-linked sodium alginate and chondroitin sulfate.","authors":"Hyun Wook Jung, Seung Min Ko, Jung Tae Lee","doi":"10.1080/14686996.2025.2523243","DOIUrl":"10.1080/14686996.2025.2523243","url":null,"abstract":"<p><p>Silicon (Si) is a promising next-generation anode material for lithium-ion batteries (LIBs) due to its exceptionally high theoretical capacity (3579 mAh g^{- 1}) and natural abundance. However, its commercialization remains challenging due to severe volume expansion (~300%) during cycling, leading to poor structural stability and rapid capacity degradation. To address this issue, we developed a novel biomass-derived binder system denoted as SCC, composed of sodium alginate (SA) and chondroitin sulfate (CS), crosslinked via a simple calcium chloride (CaCl₂) aqueous treatment. Unlike conventional synthetic polymer-based binders, this system enhances mechanical stability while maintaining an environmentally friendly, water-based fabrication process. Spectroscopic analysis confirmed strong hydrogen bonding interactions between SA and CS, as well as robust crosslinking formation through Ca²⁺. These interactions effectively enhance the mechanical strength of the SCC binder, enabling it to accommodate the severe volume changes that occur during electrochemical reactions in Si anodes. This, in turn, contributes to enhanced structural stability of Si electrode, which leads to a reduction in both solid electrolyte interphase and charge transfer resistance. As a result, the SCC electrode showed improved electrochemical cycling stability, with a 13.45% higher capacity retention after 60 cycles at a 0.2C rate compared to SA alone. This suggests its potential as a sustainable and scalable solution for next-generation high-performance Si anodes.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2523243"},"PeriodicalIF":7.4,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12284990/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144699377","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}

{"title":"Time-domain thermoreflectance technique using multiple delayed probe pulses for high-throughput data acquisition and analysis.","authors":"Hiroto Arima, Yuichiro Yamashita, Takashi Yagi","doi":"10.1080/14686996.2025.2523240","DOIUrl":"10.1080/14686996.2025.2523240","url":null,"abstract":"<p><p>To advance thermal control technology, improve thermal reuse efficiency, and further enhance device performance, it is crucial to understand microscopic spatial and temporal heat transport in materials. In this study, we developed a high-throughput time-domain thermoreflectance (HT-TDTR) technique that accelerates the measurement speed of thermophysical properties. The fundamental concept involves decomposing supercontinuum light into a pump pulse (1064 nm) and multiple delayed probe pulses (900 nm-730 nm) with different delays, enabling simultaneous acquisition of thermoreflectance signals at multiple delay times. Quartz glass, SrTiO₃ (100) single crystal, and c-plane sapphire were heated with picosecond pulsed light, and the temporal temperature decrease at six delay times was simultaneously measured. The thermal effusivities analyzed based on heat diffusion equation were consistent with the literature values. Furthermore, we applied machine learning-based analysis and demonstrated the ability to determine thermophysical properties from measurement data consisting of only a few delay points. With sufficient signal strength, machine learning can predict a reasonable thermal effusivity based on experimental data obtained in less than a second. HT-TDTR enables rapid and accurate measurement of samples based on information about thermal relaxation dynamics, facilitating more efficient characterization of thermophysical properties.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2523240"},"PeriodicalIF":7.4,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12261518/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144643328","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}

{"title":"Systematic investigation on transverse thermoelectric conversion of RE₂(Fe,Co)₁₄B (RE = rare-earth) compounds.","authors":"Babu Madavali, Fuyuki Ando, Takamasa Hirai, Andres Martin-Cid, Ken-Ichi Uchida, Hossein Sepehri-Amin","doi":"10.1080/14686996.2025.2520162","DOIUrl":"10.1080/14686996.2025.2520162","url":null,"abstract":"<p><p>Transverse thermoelectric generation (TEG) based on the anomalous Nernst effect (ANE) is a promising technology capable of converting waste heat into electricity. The transverse TEG device can operate without applying an external magnetic field by implementing permanent magnets, such as Nd₂Fe₁₄B-type magnets. However, the transverse thermoelectric properties of the rare-earth (RE) based compounds have not been systematically studied and understood so far. In this work, we have explored the potential of RE₂Fe₁₄B and Nd₂(Fe, Co)₁₄B compounds and systematically investigated the transverse thermoelectric properties at room temperature. We obtained the negative anomalous Nernst coefficient (<i>S</i> _ANE) for all the RE₂Fe₁₄B (RE = Tb, Dy, Ho, and Nd) alloys regardless of the RE element and the highest negative <i>S</i> _ANE of -0.67 <math><mo>×</mo></math> 10^-6 VK^-1 for Tb₂Fe₁₄B among them, which is comparable to that of the commercial Nd₂Fe₁₄B permanent magnets with an optimized microstructure. The substitution of Co for Fe site in Nd₂(Fe_1-<i>p</i> Co _<i>p</i> )₁₄B alloys causes sign reversal (from negative to positive) of <i>S</i> _ANE values. The transverse thermoelectric conductivity is responsible for the sign change in <i>S</i> _ANE values. As a result, the Nd₂(Fe_0.4Co_0.6)₁₄B alloy shows the highest positive <i>S</i> _ANE of 1.87 <math><mo>×</mo></math> 10^-6 VK^-1, revealing that the RE and 3<i>d</i> transition metal elements play distinct roles on the transverse thermoelectric performance in RE₂(Fe,Co)₁₄B compounds.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2520162"},"PeriodicalIF":7.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12261519/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144643327","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}

{"title":"Sum rules for X-ray circular and linear dichroism based on complete magnetic multipole basis.","authors":"Y Yamasaki, Y Ishii, N Sasabe","doi":"10.1080/14686996.2025.2513217","DOIUrl":"10.1080/14686996.2025.2513217","url":null,"abstract":"<p><p>X-ray magnetic circular dichroism (XMCD) and X-ray magnetic linear dichroism (XMLD) are powerful spectroscopic techniques for probing magnetic properties in solids. In this study, we revisit the XMCD and XMLD sum rules within a complete magnetic multipole basis that incorporates both spinless and spinful multipoles. We demonstrate that these multipoles can be clearly distinguished and individually detected through the sum-rule formalism. Within this framework, the anisotropic magnetic dipole term is naturally derived in XMCD, offering a microscopic origin for ferromagnetic-like behavior in antiferromagnets. Furthermore, we derive the sum rules for out-of-plane and in-plane XMLD regarding electric quadrupole contributions defined based on the complete multipole basis. Our theoretical approach provides a unified, symmetry-consistent framework for analyzing dichroic signals in various magnetic materials. These findings deepen the understanding of XMCD and XMLD and open pathways to exploring complex magnetic structures and spin-orbit coupling effects in emergent magnetic materials.</p>","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2513217"},"PeriodicalIF":7.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12210413/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144542108","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}