Thi Uyen Tran, Ngoc Thanh Duong, Dae Young Park, Jaeuk Bahng, Hai Phuong Duong, Van Dam Do, Mun Seok Jeong and Seong Chu Lim
{"title":"Spatially resolved optoelectronic puddles of WTe2–2D Te heterostructure†","authors":"Thi Uyen Tran, Ngoc Thanh Duong, Dae Young Park, Jaeuk Bahng, Hai Phuong Duong, Van Dam Do, Mun Seok Jeong and Seong Chu Lim","doi":"10.1039/D5NH00027K","DOIUrl":"10.1039/D5NH00027K","url":null,"abstract":"<p >Two-dimensional (2D) semiconductors have attracted significant scientific interest because of their optical properties. Their applications in optoelectronic devices can be further expanded by combining them to form heterostructures. We characterized a WTe<small><sub>2</sub></small>–2D Te heterostructure through local probing of the photocurrent with respect to the magnitude, phase, and position. Photocurrent generation within the device is divided into distinct regions: photo-thermoelectric effects occur solely at the 2D Te–Au junction area, PV-dominant effects at the 2D–WTe<small><sub>2</sub></small> interface, and thermoelectric-to-photovoltaic crossover effects at the WTe<small><sub>2</sub></small>–2D Te overlap area. These different photocurrents cannot be fused into a single domain because each area is governed by different generation mechanisms, which depend on the location of the device. The power dependence of each photocurrent type also varies within the device. Our results indicate that careful material selection and device structure design, based on the electronic, optical, and thermal properties of the channel materials, are essential to avoid forming different optoelectronic puddles that could counteract each other within a single device.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1215-1223"},"PeriodicalIF":8.0,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An ultrathin all-dielectric terahertz metamaterial with quasi-BIC induced angular dispersion","authors":"Daoye Zheng and Yu-Sheng Lin","doi":"10.1039/D5NH00011D","DOIUrl":"10.1039/D5NH00011D","url":null,"abstract":"<p >One typical characteristic of conventional all-dielectric terahertz metamaterials is their thickness, which is designed to be dozens of, or even one hundred microns, to reduce the leakage of the resonant field to the substrate. In the frequency range of 2 THz to 3 THz, we propose a substrate-free ultra-thin all-dielectric terahertz metamaterial (UATM) composed of a silicon (Si) dual-ellipse array and silicon dioxide (SiO<small><sub>2</sub></small>) supporting layer with thicknesses of 5 μm and 2 μm, respectively. The UATM exhibits quasi-bound state in the continuum (quasi-BIC) modes related to the tilt angle and period parameters. Moreover, due to the strong electromagnetic field near the interfaces and large interaction area, the UATM exhibits a high refractive index sensitivity exceeding 1.00 THz per RIU. Furthermore, at oblique incident angles ranging from 0° to 25°, the resonant quality factor (Q-factor) of the UATM remains higher than 100, and the sensitivities to the incident angle are 22.53 and 26.17 GHz per degree with a linear range of 0.498 THz and 0.438 THz, respectively. These properties indicate the potential applications of the UATM in high sensitivity biochemical sensing and multifunctional narrowband filtering fields.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1173-1183"},"PeriodicalIF":8.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weiying Zheng, Zhiquan Liu, Guoqiang Xi, Tengzhang Liu, Dingguan Wang, Lin Wang and Wugang Liao
{"title":"Polymorphic phases in 2D In2Se3: fundamental properties, phase transition modulation methodologies and advanced applications","authors":"Weiying Zheng, Zhiquan Liu, Guoqiang Xi, Tengzhang Liu, Dingguan Wang, Lin Wang and Wugang Liao","doi":"10.1039/D4NH00650J","DOIUrl":"10.1039/D4NH00650J","url":null,"abstract":"<p >Two-dimensional (2D) In<small><sub>2</sub></small>Se<small><sub>3</sub></small>, which is a multifunctional semiconductor, exhibits multiple crystallographic phases, each of which possesses distinct electronic, optical, and thermal properties. This inherent phase variability makes it a promising candidate for a wide range of applications, including memory devices, photovoltaics, and photodetectors. This review comprehensively explores the latest progress of various polymorphic phases of 2D In<small><sub>2</sub></small>Se<small><sub>3</sub></small>, emphasizing their unique properties, characterization methods, phase modulation strategies, and practical applications. Commencing with a rigorous examination of the structural attributes inherent in its various phases, we introduce sophisticated techniques for its characterization. Subsequently, modulation strategies, encompassing variations in temperature, application of electric fields, induced stress, and alterations in pressure, are explored, each exerting an influence on the phase transitions in 2D In<small><sub>2</sub></small>Se<small><sub>3</sub></small>. Finally, we highlight recent advancements and applications resulting from these phase transitions, including homoepitaxial heterophase structures, optical modulators, and phase change memory (PCM). By synthesizing insights into phase properties, modulation strategies, and potential applications, this review endeavours to provide a comprehensive understanding of the significance and prospects of In<small><sub>2</sub></small>Se<small><sub>3</sub></small> in the semiconductor field.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1054-1076"},"PeriodicalIF":8.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zacharias G. Fthenakis and Nektarios N. Lathiotakis
{"title":"Porous carbon nitride fullerenes: a novel family of porous cage molecules†","authors":"Zacharias G. Fthenakis and Nektarios N. Lathiotakis","doi":"10.1039/D5NH00091B","DOIUrl":"10.1039/D5NH00091B","url":null,"abstract":"<p >A novel family of cage molecules, porous carbon nitride fullerenes (PCNFs), is designed, proposed and studied theoretically. PCNFs can be considered the zero-dimensional counterparts of two-dimensional porous graphitic carbon nitrides, in analogy with icosahedral fullerenes, being the zero-dimensional counterparts of graphene. The study is focused on two representative members of the PCNF family: icosahedral C<small><sub>60</sub></small>N<small><sub>60</sub></small> and C<small><sub>120</sub></small>N<small><sub>60</sub></small>, which are the first members of the two main sub-families of these structures. Given the advanced potential of two-dimensional graphitic carbon nitrides for several interesting applications, it is reasonable to expect that this potential extends to their zero-dimensional counterparts. The present study demonstrates the electronic, vibrational, and thermal stability of the two representative PCNFs utilizing density functional theory and molecular dynamics simulations with ReaxFF potentials. In addition, their structural, vibrational, and electronic properties are revealed.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1184-1191"},"PeriodicalIF":8.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d5nh00091b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohammad Ali Saghafizadeh, Akbar Mohammadi Zardkhoshoui and Saied Saeed Hosseiny Davarani
{"title":"Reinforced supercapacitor electrode via reduced graphene oxide encapsulated NiTe2–FeTe2 hollow nanorods†","authors":"Mohammad Ali Saghafizadeh, Akbar Mohammadi Zardkhoshoui and Saied Saeed Hosseiny Davarani","doi":"10.1039/D5NH00107B","DOIUrl":"10.1039/D5NH00107B","url":null,"abstract":"<p >Metal telluride-based nanomaterials have garnered considerable interest as positive electrode materials for supercapacitors due to their plentiful redox-active sites, robust chemical stability, and excellent electrical conductivity. In this work, these advantageous properties are further enhanced by hybridizing NiTe<small><sub>2</sub></small>–FeTe<small><sub>2</sub></small> (NFT) hollow nanorods with reduced graphene oxide (RGO), resulting in an NFT@RGO composite suitable for supercapacitor applications. The hollow rod-like structure promotes efficient ion diffusion and maximizes the exposure of electroactive sites, while the RGO network boosts conductivity and mitigates nanomaterial agglomeration, thus preserving structural integrity and prolonging material durability. The NFT@RGO-based electrode exhibits a notable capacity of 1388.5 C g<small><sup>−1</sup></small> at 1 A g<small><sup>−1</sup></small>, with 93.82% capacity retention after 10 000 cycles. This remarkable performance arises from the synergistic contributions of the Ni and Fe metals, the electrically conductive Te element, the RGO framework, and the unique hollow morphology of the nanorods. Furthermore, a hybrid device employing activated carbon (AC) as the negative electrode (NFT@RGO//AC) achieves an energy density of 61.11 W h kg<small><sup>−1</sup></small> and retains 89.85% of its capacity over 10 000 cycles, underscoring the promise of NFT@RGO for next-generation supercapacitors. These findings position the designed nanomaterial as an excellent candidate for high-performance energy storage systems.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1159-1172"},"PeriodicalIF":8.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fengrui Sun, Kebin Yang, Xinbo Qin, Weibing Wu and Yizhong Lu
{"title":"Achieving highly efficient electrocatalytic hydrogen evolution with Co-doped MoS2 nanosheets†","authors":"Fengrui Sun, Kebin Yang, Xinbo Qin, Weibing Wu and Yizhong Lu","doi":"10.1039/D5NH00111K","DOIUrl":"10.1039/D5NH00111K","url":null,"abstract":"<p >MoS<small><sub>2</sub></small> is a promising hydrogen evolution reaction (HER) catalyst because of the Pt-like activity at the side edges, but the whole activity is restricted by the inert basal plane. Herein, Co-doped 1T-MoS<small><sub>2</sub></small> nanosheets are grown on carbon cloth (CC) through hydrothermal synthesis and exhibit superior HER activity with an overpotential of 69 mV@10 mA cm<small><sup>−2</sup></small> and a Tafel slope of 81.84 mV dec<small><sup>−1</sup></small> as well as durability for over 100 h at 100 mA cm<small><sup>−2</sup></small> in an alkaline medium. The detailed structural tests demonstrate that the improved HER activity is attributed to Co doping and the high 1T phase content. Co doping induces transformation from the 2H to the 1T phase (67%), and further TMA<small><sup>+</sup></small> addition increases the doping amount and the 1T phase content (79%). The excellent durability is due to the strong interface binding between MoS<small><sub>2</sub></small> nanosheets and CC associated with the heterogeneous nucleation and growth and the high growth temperature (230 °C). This provides an inspiration for developing efficient and stable MoS<small><sub>2</sub></small> catalysts by element doping.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1120-1130"},"PeriodicalIF":8.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Si-Ye Tong, Cong-Min Huo, Yu-Cheng Zuo, Shuo Gao, David Tai Leong, Wei Xue and Jing-Yi Zhu
{"title":"Reversing cancer immunosuppression via K+ capture and repolarization of tumor-associated macrophages†","authors":"Si-Ye Tong, Cong-Min Huo, Yu-Cheng Zuo, Shuo Gao, David Tai Leong, Wei Xue and Jing-Yi Zhu","doi":"10.1039/D5NH00050E","DOIUrl":"10.1039/D5NH00050E","url":null,"abstract":"<p >Immunosuppression from the tumor microenvironment plays a key role in the failure of cancer immunotherapy. The presence of potassium ions (K<small><sup>+</sup></small>) from dying tumor cells creates an immunosuppressive environment that encourages tumor-associated macrophages (TAMs) to adopt a pro-tumor M2-like phenotype. Alleviating immune suppression from the high K<small><sup>+</sup></small> environment might boost innate immunity and fight tumor growth. Herein, disulfide-rich mesoporous silica modified with 18-crown-6 ether was developed as a nanocarrier (D-C) to load ML133, encapsulating with the DiR-embedded macrophage membrane (CM) to create D-C/M@CM/DiR. We first saturated the phagocytosis of the mononuclear phagocyte system (MPS) with blank nanocarriers to enhance the tumor accumulation of D-C/M@CM/DiR, which was coated with the same CM. 18-Crown-6 ether captures K<small><sup>+</sup></small> to reduce immunosuppression, while ML133 promotes the polarization of TAMs to an anti-tumor M1 phenotype by targeting the K<small><sup>+</sup></small> channel protein Kir2.1 on their membranes. This strategy activates the anti-tumor immune response and effectively inhibits tumor growth.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1107-1119"},"PeriodicalIF":8.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A bioinspired helical hydrogel scaffold with real-time sensing for enhanced precision in gynecological digital vaginal examination†","authors":"Weipeng Lu, Qing He, Zheng Mao, Songchao Fu, Yue Wang, Zhiwei Jiang, Ying Wang, Yue Cao, Sunlong Li, Cihui Liu and Qian Dong","doi":"10.1039/D4NH00636D","DOIUrl":"10.1039/D4NH00636D","url":null,"abstract":"<p >Precise diagnostic and therapeutic modalities are of utmost significance in driving forward patient care within the sphere of gynecological medicine. Bionics, involving the application of nature-inspired designs in medical apparatus, has emerged as a highly promising approach in this field. Specifically, helical architectures observed in natural organisms like vines display remarkable adaptability and mechanical strength, presenting novel perspectives for the development of ergonomic and effective gynecological examination and surgical instruments. Harnessing these insights, this study presents a helical polydimethylsiloxane (PDMS) scaffold inspired by the deformability of vines. This scaffold not only integrates Janus wettability hydrogel properties to enhance tissue interaction, ensuring increased comfort and adaptability during clinical procedures, but also incorporates sensors for real-time monitoring and feedback, thereby overcoming the limitations of conventional gynecological devices that often lack such capabilities. We meticulously detail the fabrication of this helical finger scaffold, using a sandwich thermoplastic method to produce hydrogel fibers possessing shape memory, thermal responsiveness, and deformation sensing <em>via</em> relative resistance changes. Additionally, the study explores finger motion monitoring through surface electromyography (sEMG) signals, which advances the precision and safety of cervical palpation and related surgeries. Overall, our findings highlight the potential of these responsive and adaptable hydrogels to transform gynecological medical devices, providing a solid theoretical foundation and practical applications for future innovations in gynecological diagnostics and surgical support.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1131-1139"},"PeriodicalIF":8.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mujtaba Aminu Muhammad, Yangjie Liu, Baffa Haruna, Ahmed Abdel-aziz, Zul Qarnain, Amir Mahmoud Makin, Jiaqi Yu, Bo Zheng, Xiang Hu and Zhenhai Wen
{"title":"Optimizing sodium storage and durability in metal sulfide anodes with a 3D graphene architecture†","authors":"Mujtaba Aminu Muhammad, Yangjie Liu, Baffa Haruna, Ahmed Abdel-aziz, Zul Qarnain, Amir Mahmoud Makin, Jiaqi Yu, Bo Zheng, Xiang Hu and Zhenhai Wen","doi":"10.1039/D4NH00653D","DOIUrl":"10.1039/D4NH00653D","url":null,"abstract":"<p >Transition metal chalcogenides (TMCs) with a high theoretical capacity are regarded as promising anodes for sodium-ion batteries (SIBs) but encounter several challenges because of the complex conversion process, which leads to numerous side reactions and the inevitable disintegration of active materials, thereby impeding their practical application. In this work, inspired by a three-dimensional (3D) structure design, stable 3D reduced graphene oxide with heteroatom-site coordinated carbon centers (3DNSrGO) is fabricated, which features uniform and abundant nickel sulfide (NiS) particles within the empty spaces, along with sufficient access to the liquid electrolyte, thereby enabling more efficient transfer of sodium ions. Nevertheless, the NiS/3DNSrGO electrode still suffers from unexpected cycling instability and failure issues because of the short-circuiting, resulting from sodium (Na) metal corrosion and the deterioration of the glass fiber (GF) separator. The issue of short cycle life is significantly mitigated at the cell configuration level (inclusion of the polypropylene membrane) by lowering the risks of Na–metal corrosion and protecting the GF membrane. This study holds considerable potential for addressing (1) the growing requirement for efficient and sustainable Na<small><sup>+</sup></small> host materials and (2) a newfangled approach that optimizes the long-term cycling stability of SIBs <em>via</em> a better cell configuration.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 6","pages":" 1203-1214"},"PeriodicalIF":8.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ky-Vien Le, Hanh-Vy Tran Nguyen, Phu-Quan Pham, Ngoc Hong Nguyen, Tan Le Hoang Doan, Linh Ho Thuy Nguyen, Bach Thang Phan, Lan Thi My Nguyen, Sungkyun Park, Ngoc Kim Pham, Philip Anggo Krisbiantoro, Kevin C.-W. Wu and Ngoc Xuan Dat Mai
{"title":"Biogenic fluorescent carbon dot-decorated mesoporous organosilica nanoparticles for enhanced bioimaging and chemotherapy†‡","authors":"Ky-Vien Le, Hanh-Vy Tran Nguyen, Phu-Quan Pham, Ngoc Hong Nguyen, Tan Le Hoang Doan, Linh Ho Thuy Nguyen, Bach Thang Phan, Lan Thi My Nguyen, Sungkyun Park, Ngoc Kim Pham, Philip Anggo Krisbiantoro, Kevin C.-W. Wu and Ngoc Xuan Dat Mai","doi":"10.1039/D4NH00633J","DOIUrl":"10.1039/D4NH00633J","url":null,"abstract":"<p >Hybrid materials possess the unique properties of their individual components, enabling their use in multiple synergistic applications. In this study, we synthesized biogenic fluorescent carbon dots (CDs) decorated with biodegradable periodic mesoporous organosilica nanoparticles (BPMO), creating BPMO@CDs. The CDs, approximately 9.8 nm in diameter, were derived from <em>Musa paradisiaca</em> cv. <em>Awak</em> juice using a rapid microwave method, exhibiting a spherical shape and green and red luminescence. The resulting BPMO@CDs are spherical, around 100 nm in size, and maintain high pore volume and surface area. The elemental chemical state in the BPMO@CDs remains consistent with that of pure BPMO. Our findings demonstrate that BPMO@CDs achieve efficient cellular uptake rates of 46.74% in MCF7 cells and 17.07% in L929 cells, with preserved fluorescence within the cells. The optical properties of the CDs are retained in the BPMO@CDs, allowing for detection upon cellular uptake. Additionally, when loaded with anticancer drugs, the BPMO@CDs significantly enhance the cytotoxicity against MCF7 breast cancer cells, highlighting their potential for synergistic bioimaging and chemotherapy applications.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 5","pages":" 1000-1006"},"PeriodicalIF":8.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}