ACS NanoPub Date : 2025-10-09DOI: 10.1021/acsnano.5c08747
Sofia Ferreira-Teixeira, , , Daniel Tezze, , , Maria Ramos, , , Covadonga Álvarez-García, , , Bertuğ Bayındır, , , Junhyeon Jo, , , Beatriz Martín-García, , , Maider Ormaza, , , Fèlix Casanova, , , Samuel Mañas-Valero, , , Eugenio Coronado, , , Hasan Sahin, , , Luis E. Hueso, , and , Marco Gobbi*,
{"title":"Ferromagnetism above 200 K in Organic-Ion Intercalated CrSBr","authors":"Sofia Ferreira-Teixeira, , , Daniel Tezze, , , Maria Ramos, , , Covadonga Álvarez-García, , , Bertuğ Bayındır, , , Junhyeon Jo, , , Beatriz Martín-García, , , Maider Ormaza, , , Fèlix Casanova, , , Samuel Mañas-Valero, , , Eugenio Coronado, , , Hasan Sahin, , , Luis E. Hueso, , and , Marco Gobbi*, ","doi":"10.1021/acsnano.5c08747","DOIUrl":"10.1021/acsnano.5c08747","url":null,"abstract":"<p >CrSBr is a van der Waals magnetic semiconductor exhibiting antiferromagnetic order below 140 K. It has emerged as a promising platform for engineering 2D magnetism because its intertwined electronic, optical, and magnetic properties can be profoundly modified via external stimuli such as electrical gating or magnetic fields. However, other strategies for tuning magnetism in layered materials, such as molecular intercalation, remain largely unexplored for CrSBr. Here, we demonstrate that the intercalation of tetramethylammonium (TMA) and tetrapropylammonium (TPA) ions into CrSBr induces a transition from antiferromagnetic to ferromagnetic order, while significantly enhancing the magnetic transition temperature to 190 K (TMA) and 230 K (TPA). The resulting intercalates are air-stable and exhibit large, hysteretic magnetoresistance exceeding 60% at 50 K in the TPA case. Besides, intercalation introduces symmetry-breaking structural changes in each CrSBr plane, revealed by Raman microscopy and corroborated by density functional theory (DFT) calculations. These findings highlight molecular intercalation as a powerful and versatile route to tailor the magnetic properties of CrSBr and unlock its potential to fabricate robust, high-temperature 2D magnetic devices.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36275–36284"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ACS NanoPub Date : 2025-10-09DOI: 10.1021/acsnano.5c07565
Reiner Brüning*, , , Jasmin Bedow, , , Roberto Lo Conte, , , Kirsten von Bergmann*, , , Dirk K. Morr, , and , Roland Wiesendanger,
{"title":"The Noncollinear Path to Two-Dimensional Topological Superconductivity","authors":"Reiner Brüning*, , , Jasmin Bedow, , , Roberto Lo Conte, , , Kirsten von Bergmann*, , , Dirk K. Morr, , and , Roland Wiesendanger, ","doi":"10.1021/acsnano.5c07565","DOIUrl":"10.1021/acsnano.5c07565","url":null,"abstract":"<p >Two-dimensional magnet-superconductor hybrids (2D-MSH) are promising candidates to realize devices for topology-based quantum technologies and superconducting spintronics. So far, studies have focused on 2D-MSH systems with collinear ferro- or antiferromagnetic layers. Here, we present the discovery of topological superconductivity in a noncollinear MSH system where a magnetic spiral is realized in an Fe monolayer proximity coupled to a superconducting Ta(110) substrate. By combining low-temperature spin-polarized scanning tunneling spectroscopy with an in-depth theoretical study, we can conclude that the system is in a topological nodal-point superconducting phase with low-energy edge modes. Furthermore, we reveal that for this noncollinear spin texture, these edge modes exhibit a magnetization direction-dependent dispersion. This means that a spatial shift of the magnetic spiral could be used to reverse the chirality of an edge mode in future MSH-based devices.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36215–36222"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsnano.5c07565","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Controllable Synthesis of Gradient α/β-ZnS:Cu for Revealing the Mechanoluminescent Mechanisms","authors":"Yongqing Bai, , , Zhidong Ma, , , Birong Tian, , , Biyun Fan, , , Xianfeng Jin, , , Mengxiao Chen*, , , Zhaofeng Wang*, , , Xiandi Wang*, , and , Xun Han*, ","doi":"10.1021/acsnano.5c11754","DOIUrl":"10.1021/acsnano.5c11754","url":null,"abstract":"<p >ZnS:Cu, with interband direct transition, exhibits complex and tunable emission spectra due to the additional energy levels introduced by Cu doping, making it ideal for mechanoluminescent devices. However, the coexistence of α- and β-ZnS:Cu phases and diverse Cu ion doping complicates the coupling of various luminescent processes and understanding its mechanoluminescent mechanism. Here, the gradient α/β-ZnS:Cu with pure-phase and single-structure has been synthesized through an oxygen-assisted variable-temperature rapid cooling sintering method with low Cu concentration. Oxygen introduction promoted the formation of sulfur vacancies, enabling precise regulation of Cu doping amount and site. By fine-tuning the sintering process and Cu concentration, the composition of α/β-ZnS:Cu was adjusted precisely while suppressing impurities. Using this tunable-gradient α/β-ZnS:Cu, the complex luminescence processes were decoupled, confirming that the piezoelectricity of ZnS:Cu directly stimulates mechanoluminescence generation. This understanding proves valuable in refining the mechanoluminescence mechanism and enhancing the design of mechanoluminescent materials.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36578–36588"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145255480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ACS NanoPub Date : 2025-10-09DOI: 10.1021/acsnano.5c11205
Yuriy E. Vekovshinin*, , , Leonid V. Bondarenko, , , Alexandra Y. Tupchaya, , , Tatiana V. Utas, , , Edrick Wang, , , Alexey N. Mihalyuk, , , Dimitry V. Gruznev, , , Andrey V. Zotov, , and , Alexander A. Saranin,
{"title":"High-Order Van Hove Singularities in Atomically Thin Kagome Metal LaTl3","authors":"Yuriy E. Vekovshinin*, , , Leonid V. Bondarenko, , , Alexandra Y. Tupchaya, , , Tatiana V. Utas, , , Edrick Wang, , , Alexey N. Mihalyuk, , , Dimitry V. Gruznev, , , Andrey V. Zotov, , and , Alexander A. Saranin, ","doi":"10.1021/acsnano.5c11205","DOIUrl":"10.1021/acsnano.5c11205","url":null,"abstract":"<p >Kagome materials serve as a versatile platform where an interplay of flat bands, Dirac Fermions, and Van Hove singularities enables the emergence of exotic strongly correlated phenomena. Recently, it was predicted that an ideal single layer kagome lattice may host high-order Van Hove singularities (HOVHSs) characterized by extremely flat dispersions, leading to drastic changes in electronic behavior. However, experimentally, HOVHSs have been observed up to now only in a narrow range of materials, mostly in graphene layers, but not in metal–semiconductor interfaces. Here, we report the discovery of HOVHSs in the monolayer-thick kagome metal LaTl<sub>3</sub> epitaxially synthesized on the Si(111) substrate. The scanning tunneling microscopy observations and ab initio calculations indicate the kagome-like ordering of the LaTl<sub>3</sub> layer, while the angle-resolved photoemission spectroscopy measurements and theoretical predictions uncover a rich and complex landscape of various Van Hove singularities emerged in the system, including high-order ones, which can significantly affect the anomalous Hall response and enable the unique high electron-correlation regime in the system. The discovered properties make the LaTl<sub>3</sub> kagome monolayer a highly attractive material for ultracompact nanoelectronic devices.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36510–36516"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145255464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bioinspired and Biomimetic Wetting Properties","authors":"Frédéric Guittard*, , , Sonia Amigoni, , and , Thierry Darmanin*, ","doi":"10.1021/acsnano.5c04840","DOIUrl":"10.1021/acsnano.5c04840","url":null,"abstract":"<p >We review the bioinspiration and biomimetism, for which wetting properties are involved. Nature is able to capture or repel liquids such as water, following the needs. The most famous example of water repellency is the Lotus leaves, but numerous other species are also able to capture water. On the contrary, springtails are able to repel low-surface-tension liquids, while pitcher plants are able to capture prey.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36005–36026"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsnano.5c04840","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ACS NanoPub Date : 2025-10-09DOI: 10.1021/acsnano.5c07444
Zach Troyer, , , Olesia Gololobova, , , Tom A. P. Driedonks, , , Loren D. Erickson, , , Joy Wolfram*, , and , Kenneth W. Witwer*,
{"title":"Extracellular Vesicles and B Cell Interactions: B-Side Track or Greatest Hit?","authors":"Zach Troyer, , , Olesia Gololobova, , , Tom A. P. Driedonks, , , Loren D. Erickson, , , Joy Wolfram*, , and , Kenneth W. Witwer*, ","doi":"10.1021/acsnano.5c07444","DOIUrl":"10.1021/acsnano.5c07444","url":null,"abstract":"<p >Substantial efforts have been made in understanding interactions between extracellular vesicles and cells, particularly in small animal models, such as rats and mice. However, many questions remain unanswered about the fate of intravenously injected extracellular vesicles in large animals, especially in terms of interactions with immune cells. In this article, we summarize findings from two recent nonhuman primate studies involving extracellular vesicle interactions with circulating immune cells. We highlight the surprising finding that certain extracellular vesicles primarily associate with B cells and present key questions for future studies pertaining to this interaction.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36027–36034"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsnano.5c07444","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145255462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Enhancing Physical Randomness in Ta2O5/HfO2 Based Memristors through Electrode Engineering for True Random Number Generation","authors":"Bei Jiang, , , Yong Wang, , , Yahui Qing, , , Yongtao Shan, , , Ruxin Li, , , Zihan Wu, , , Zihao Chen, , , Liao Zhao, , , Desheng Cai, , , Peiliang Su, , , Xingqiang Liu, , , Kenli Li, , , Hao Huang*, , , Xingan Jiang, , , Xiangdong Yang, , , Cong Ye*, , and , Xuming Zou*, ","doi":"10.1021/acsnano.5c05204","DOIUrl":"10.1021/acsnano.5c05204","url":null,"abstract":"<p >True random number generators (TRNGs) based on memristors utilize inherent switching variability to generate unpredictable true random numbers. Herein, the performance and instability of Ta<sub>2</sub>O<sub>5</sub>/HfO<sub>2</sub>/Pt based memristors induced by their top electrodes are investigated. With Ag, Ta, and Pt as their top electrodes, Ta<sub>2</sub>O<sub>5</sub>/HfO<sub>2</sub>/Pt based memristors exhibit volatility, bipolarity, and unipolarity, respectively, which correspond to different conduction mechanism models. The intrinsic stochastic characteristics can be leveraged in various TRNG circuits, especially enhancing the throughput rate and continuity of circuits by utilizing unipolar Pt/Ta<sub>2</sub>O<sub>5</sub>/HfO<sub>2</sub>/Pt devices. Notably, under optimized conditions, the TRNG based on the unipolar device achieves a throughput rate of approximately 160 kb/s, and the generated true random numbers passed all 15 NIST SP 800-22 randomness tests. This work not only realizes a TRNG with a unipolar memristor as its core entropy source but also underscores the significance in securing encrypted transmission for Internet of Things applications.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36196–36203"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ACS NanoPub Date : 2025-10-09DOI: 10.1021/acsnano.5c12643
Seong Hee Jeong, , , Seungun Shin, , , Dongil Kim, , , Myeongsoo Kim, , , Hyejin Kwon, , , Sora Kang, , , Min-Sang Song, , , Woosuk Cho, , , Duho Kim*, , and , Min-Sik Park*,
{"title":"Cationic Point Defect Fluoride to Improve Reaction Kinetics in (All) Solid-State Li Batteries","authors":"Seong Hee Jeong, , , Seungun Shin, , , Dongil Kim, , , Myeongsoo Kim, , , Hyejin Kwon, , , Sora Kang, , , Min-Sang Song, , , Woosuk Cho, , , Duho Kim*, , and , Min-Sik Park*, ","doi":"10.1021/acsnano.5c12643","DOIUrl":"10.1021/acsnano.5c12643","url":null,"abstract":"<p >Nickel-rich cathode materials (NCM) have emerged as promising candidates for lithium-ion batteries (LIBs) and all-solid-state batteries (ASSBs) due to their high reversible capacity (>200 mAh g<sup>–1</sup>). However, surface side reactions with liquid and solid electrolytes during cycling increase interfacial resistance and accelerate capacity fading, thereby hindering the practical implementation of NCM cathodes. To achieve high-energy LIBs and ASSBs, it is essential to control the interfacial reactions. This can be achieved by integrating coating materials that exhibit a high ionic conductivity and excellent electrochemical stability. In this paper, we propose a cationic defect concept that leads to expansion of the Li kinetic pathway and the formation of a coherent crystal framework that induces a durable interface. This concept is implemented using Li<sub>3+<i>x</i></sub>Al<sub>1–<i>x</i>/3</sub>F<sub>6</sub> models for reducing the interfacial resistance and enhancing the structural stability of NCM cathodes in both LIBs and ASSBs. The Li<sub>3.3</sub>Al<sub>0.9</sub>F<sub>6</sub> coating layer exhibiting high ionic conductivity and superior voltage stability effectively controls interfacial side reactions at both electrolyte interfaces, reducing interfacial resistance and improving cycling performance. It can enhance the electrochemical properties of NCM cathode materials, contributing to the realization of high-energy LIBs and ASSBs. We investigate the impact of the chemical composition of the Li<sub>3.3</sub>Al<sub>0.9</sub>F<sub>6</sub> coating layer on the reversibility and interfacial stability of NCM cathodes and further identify the effectiveness of the coating under high-temperature and high-voltage conditions. Based on the intriguing cationic defect concept, our findings contribute to the development of highly stable cathode materials for the implementation of high-energy LIBs and ASSBs.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36718–36727"},"PeriodicalIF":16.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145255481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ACS NanoPub Date : 2025-10-08DOI: 10.1021/acsnano.5c10081
Hyung Shik Kim, , , Grant G. Simpson, , , Jasmine Carrothers, , , Yen T. M. Nguyen, , , Rainer Kohler, , , Seungbeom Hong, , , Seungbin Cha, , , Dong Ho Kim, , , Christopher S. Garris, , and , Ralph Weissleder*,
{"title":"A Myeloid Cell-Targeted Immunostimulant Cocktail (MyTai) Enhances Cancer Immunotherapy","authors":"Hyung Shik Kim, , , Grant G. Simpson, , , Jasmine Carrothers, , , Yen T. M. Nguyen, , , Rainer Kohler, , , Seungbeom Hong, , , Seungbin Cha, , , Dong Ho Kim, , , Christopher S. Garris, , and , Ralph Weissleder*, ","doi":"10.1021/acsnano.5c10081","DOIUrl":"10.1021/acsnano.5c10081","url":null,"abstract":"<p >The efficacy of tumor vaccines depends in large part on additional immunostimulation of antigen-presenting cells (APC) in tumor microenvironments. Various Toll-like receptors (TLR), and in particular TLR3 stimulation by dsRNA, generate a cellular immune response well suited for vaccines. A major drawback of currently used Poly I:C-based TLR3 agonists is their size heterogeneity, variable stability, as well as the toxicity of lipid nanoparticle (LNP) delivery vehicles. To improve existing platforms, here, we designed a myeloid cell targeting nanoparticle system with a refined TLR3 agonist (NexaVant, NVT) and additionally containing small molecule NF-κB stimulators. We termed this myeloid targeting immune enhancer cocktail “MyTai”. MyTai, based on ferrocenoyl-aminoguanidine modified cross-linked bis succinyl cyclodextrin, efficiently charge-complexed NVT and small molecules, resulting in a ∼100 nm diameter nanoparticle. MyTai was shown to be extraordinarily robust, highly efficacious in eradicating multiple tumor types, stable, and characterized by low toxicity when administered systemically. MyTai represents a viable alternative to otherwise toxic LNP RNA delivery platforms for immune stimulation.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36451–36464"},"PeriodicalIF":16.0,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Atom and Molecule Migrations between Scanning Tunneling Microscopy Tips and Surfaces","authors":"Xin Li, , , Yifan Wang, , , Guilin Zhu, , , Jie Li, , , Mingjun Zhong, , , Ziyong Shen, , , Yaping Zang, , , Zhen Xu, , , Song Gao, , , Kai Wu, , , Lianmao Peng, , , Shimin Hou, , , Jingtao Lü*, , , Richard Berndt*, , , Yongfeng Wang*, , and , Yajie Zhang*, ","doi":"10.1021/acsnano.5c12159","DOIUrl":"10.1021/acsnano.5c12159","url":null,"abstract":"<p >The breaking and formation of chemical bonds in nanoscale junctions are of fundamental importance in single molecule electronics. Direct visualization of junction structures is crucial for revealing structural changes and establishing an atomic-scale correlation between the structure and conductance. Here, we employ a low-temperature scanning tunneling microscope to visualize the migration of atoms and molecules in the tunneling junctions. Through tip manipulation, four types of Ag clusters are constructed on the Ag(111) surface, each containing 1–4 Ag atoms, respectively. Ag and C<sub>60</sub> functionalized tips are used to establish contact with the Ag clusters, and the atom and molecule migrations are unambiguously determined by subsequent imaging. This approach establishes a clear relationship between structure and conductance for these junctions, and the resulting insight into the structural change during junction rupture is crucial for developing reliable single molecule devices.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"19 41","pages":"36646–36652"},"PeriodicalIF":16.0,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}