{"title":"Super-Robust Cellulose Rayon Filaments Engineered via Molecular Orientation-Cross-linking Assembly","authors":"Zhihan Tong, , , Shi Liu, , , Hongying Tang, , , Jianing Liu, , , Wenjing Bi, , , Yuan Liu, , , Suqing Zeng, , , Qinqin Xia*, , , Dawei Zhao*, , and , Haipeng Yu*, ","doi":"10.1021/acs.nanolett.5c04065","DOIUrl":"10.1021/acs.nanolett.5c04065","url":null,"abstract":"<p >Developing high-performance regenerated cellulose fibers as sustainable alternatives to nonrenewable and nonbiodegradable synthetic fibers (e.g., polyamide and polyester) remains a critical challenge, particularly in addressing the environmental concerns of conventional viscose rayon and the fibrillation issues of Lyocell fibers. This study introduces a molecular orientation-cross-linking assembly technology integrated with dry-jet wet spinning, employing a deep eutectic solvent system (ZnCl<sub>2</sub>/formic acid/water) for efficient cellulose dissolution. Through synergistic gravity-assisted traction orientation, Ca<sup>2+</sup> complexation, and ethanol–water coagulation, we achieve highly aligned cellulose chains with exceptional structural ordering (60.4% crystallinity, >0.8 orientation factor). The resulting cellulose filaments demonstrate record mechanical properties with a tensile strength of 1.02 GPa and a toughness of 44.08 MJ m<sup>–3</sup>, surpassing commercial polyamide, polyester, Modal, and Lyocell fibers. This approach not only enables precise molecular-scale control of fiber performance but also provides a scalable and sustainable manufacturing solution.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14489–14496"},"PeriodicalIF":9.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078354","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}
Nano LettersPub Date : 2025-09-18DOI: 10.1021/acs.nanolett.5c02952
Evelijn Akerboom*, , , Hiroshi Sugimoto, , , Minoru Fujii, , , F. Javier García de Abajo, , and , Albert Polman*,
{"title":"Angle-Resolved Cathodoluminescence Interferometry of Plasmonic and Dielectric Scatterers","authors":"Evelijn Akerboom*, , , Hiroshi Sugimoto, , , Minoru Fujii, , , F. Javier García de Abajo, , and , Albert Polman*, ","doi":"10.1021/acs.nanolett.5c02952","DOIUrl":"10.1021/acs.nanolett.5c02952","url":null,"abstract":"<p >We demonstrate angle-resolved cathodoluminescence (CL) interferometry from electron-beam-excited plasmonic and dielectric nanostructures placed above a Au-coated substrate. We use 20–30 keV electrons to coherently excite plasmon-mediated radiation, which interferes with its mirror image, providing a method to determine the particle-substrate spacing. In an aloof excitation geometry, transition radiation emitted from the Au substrate adds to the interferogram and provides a means to probe the electron traveling time. The measured CL interferograms are in excellent agreement with a scattering and interferometry model in which a single electron coherently launches plasmons at two separate locations. Polarization-resolved CL measurements confirm the interferometric scattering model. Electron-excited Si Mie scatterers show interferograms modulated with resonantly enhanced emission. CL interferometry enables accurate measurement of critical distances in nanoscale geometries, in particular along the electron-beam direction, which are not easily accessible in electron microscopy, while offering a platform for studying optical interference in complex geometries.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14264–14269"},"PeriodicalIF":9.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.5c02952","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078189","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":"Pressure-Driven Solid-State Radical Polymerization toward Carbon Nanothread","authors":"Guangwei Che, , , Xingyu Tang, , , Jie Liu, , , Puyi Lang, , , Yunfan Fei, , , Xin Yang, , , Yajie Wang, , , Dexiang Gao, , , Xiaoge Wang, , , Jing Ju, , , Aijiao Guan, , , Junfeng Xiang, , , Xiao Dong, , , Takanori Hattori, , , Jun Abe, , , Haiyan Zheng, , and , Kuo Li*, ","doi":"10.1021/acs.nanolett.5c03977","DOIUrl":"10.1021/acs.nanolett.5c03977","url":null,"abstract":"<p >Mechanochemical radical polymerization has unique advantages in the synthesis of polymers due to its reduced solvent consumption and adaptability of insoluble monomers. However, it suffers from the uncontrollable degradation of the formed polymers during reaction, and a new synthetic strategy with precise controllability needs to be developed. Here, by employing high static pressure up to 30 GPa, we found 1,3,5-trifluorobenzene undergoes radical polymerization by breaking the conjugated π-bonds and forms a carbon nanothread with high selectivity (Polymer-I polymorph). Based on the crystal structure at the threshold pressure and the calculated energy barriers for the bonding pathway, we concluded that the benzene rings react via a radical 1,2-addition pathway. Our work highlights that high pressure is a robust method to initiate solid-state radical polymerization, even for very stable aromatics, and offers fresh insights for the synthesis of polymeric carbon-based materials with high selectivity.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14467–14472"},"PeriodicalIF":9.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145084043","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}
Nano LettersPub Date : 2025-09-17DOI: 10.1021/acs.nanolett.5c03922
Laura Borgongino*, , , Rubén Seoane Souto, , , Alessandro Paghi, , , Giulio Senesi, , , Katarzyna Skibinska, , , Lucia Sorba, , , Elisa Riccardi, , , Francesco Giazotto, , and , Elia Strambini*,
{"title":"Biharmonic-Drive Tunable Josephson Diode","authors":"Laura Borgongino*, , , Rubén Seoane Souto, , , Alessandro Paghi, , , Giulio Senesi, , , Katarzyna Skibinska, , , Lucia Sorba, , , Elisa Riccardi, , , Francesco Giazotto, , and , Elia Strambini*, ","doi":"10.1021/acs.nanolett.5c03922","DOIUrl":"10.1021/acs.nanolett.5c03922","url":null,"abstract":"<p >The superconducting diode effect has garnered significant interest due to its prospective applications in cryogenic electronics and computing, enabling directional supercurrent transport. This phenomenon has been demonstrated across various superconducting platforms, which typically necessitate unconventional materials with broken spatial symmetries or external magnetic fields, posing scalability and integration challenges. This work introduces an innovative method to realize the superconducting diode effect by disrupting spatiotemporal symmetries in a conventional Josephson junction utilizing a biharmonic alternating-current (AC) drive signal. We achieve wireless modulation of the diode’s polarity and efficiency with an antenna. Our findings indicate a diode efficiency reaching the ideal 100% over a broad frequency range, with a temperature resilience of up to 800 mK, and efficient AC signal rectification. This versatile and platform-independent superconducting diode signifies a promising component for advancing future superconducting digital electronics, including efficient logic gates, ultrafast switches, and dynamic half-wave supercurrent rectifiers.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14451–14458"},"PeriodicalIF":9.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.5c03922","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145074109","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}
Nano LettersPub Date : 2025-09-17DOI: 10.1021/acs.nanolett.5c03959
Lesley Spencer, , , Nathan Coste*, , , Xueqi Ni, , , Seungmin Park, , , Otto C. Schaeper, , , Young Duck Kim, , , Takashi Taniguchi, , , Kenji Watanabe, , , Milos Toth, , , Anastasiia Zalogina, , , Haoning Tang, , and , Igor Aharonovich*,
{"title":"A van der Waals Moiré Bilayer Photonic Crystal Cavity","authors":"Lesley Spencer, , , Nathan Coste*, , , Xueqi Ni, , , Seungmin Park, , , Otto C. Schaeper, , , Young Duck Kim, , , Takashi Taniguchi, , , Kenji Watanabe, , , Milos Toth, , , Anastasiia Zalogina, , , Haoning Tang, , and , Igor Aharonovich*, ","doi":"10.1021/acs.nanolett.5c03959","DOIUrl":"10.1021/acs.nanolett.5c03959","url":null,"abstract":"<p >Enhancing light–matter interactions with photonic structures is critical in classical and quantum nanophotonics. Recently, Moiré twisted bilayer optical materials have been proposed as a promising means toward a tunable platform for nanophotonic devices. However, the realization of Moiré photonic crystal (PhC) cavities has been challenging, due to a lack of advanced nanofabrication techniques and availability of stand-alone transparent membranes. Here, we leverage the properties of the van der Waals material hexagonal boron nitride to realize Moiré bilayer PhC cavities. We design and fabricate a range of devices with controllable twist angles, with flatband modes in the visible spectral range (∼450 nm). Optical characterization confirms the presence of spatially periodic cavity modes originating from the engineered dispersion relation (flatband). Our findings present a major step toward harnessing a two-dimensional van der Waals material for the next generation of on chip, twisted nanophotonic systems.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14459–14466"},"PeriodicalIF":9.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078455","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":"Manipulating Nanowire Structures for Anti-Interference and Bimodal Flexible Tactile Sensors","authors":"Wen-Ze Wang, , , Xin-Lin Li, , , Qi-Rui Yang, , and , Jian-Wei Liu*, ","doi":"10.1021/acs.nanolett.5c03721","DOIUrl":"10.1021/acs.nanolett.5c03721","url":null,"abstract":"<p >Flexible tactile sensors (FTS) excel in precise signal detection for biomimetic prosthetics, healthcare, and wearable devices yet struggle to sense single tactile signals amid interference while preserving sensitivity. Here, inspired by scorpions, we report ultrasensitive bimodal FTS with superior anti-interference capability, leveraging interface assembly techniques combined with mechanical strategies. Significantly, precise control over the preparation of large-area, highly ordered silver nanowires (Ag NWs) was achieved through our innovative and feasible strategy. The formation of crack structure in the Mode I enables an ultrasensitive sensing performance (GF = 7.58 × 10<sup>5</sup>; detection limit: 0.01%). Conversely, the ordered nanowires with a 3D buckled structure in Mode II make FTS insensitive to various external stimuli. Moreover, our FTS achieves exceptional anti-interference capability to other stimuli (temperature, humidity, and impacts). More importantly, the FTS is applied to monitor the wrist joint and spinal movements, showcasing their immense potential in intelligent healthcare and disease prevention.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14404–14411"},"PeriodicalIF":9.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078452","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}
Nano LettersPub Date : 2025-09-17DOI: 10.1021/acs.nanolett.5c03548
Ryann A. Joseph, , , Rebecca M. Haley, , , Marshall S. Padilla, , , Adele S. Ricciardi, , , Hannah M. Yamagata, , and , Michael J. Mitchell*,
{"title":"Cas9 Protein Outperforms mRNA in Lipid Nanoparticle-Mediated CFTR Repair","authors":"Ryann A. Joseph, , , Rebecca M. Haley, , , Marshall S. Padilla, , , Adele S. Ricciardi, , , Hannah M. Yamagata, , and , Michael J. Mitchell*, ","doi":"10.1021/acs.nanolett.5c03548","DOIUrl":"10.1021/acs.nanolett.5c03548","url":null,"abstract":"<p >Lipid nanoparticles (LNPs) are currently one of the most clinically advanced delivery systems for nucleic acid cargo and hold great potential for clinical applications in gene editing and the treatment of genetic diseases. LNP-mediated delivery of Cas9 with single guide RNA (sgRNA) and homology-directed repair DNA template (ssDNA) enables efficient and precise editing <i>in vitro</i> and <i>in vivo</i>. Comparative analysis of LNP delivery of Cas9 as protein or mRNA for relevant clinical targets, such as cystic fibrosis (CF), which is caused by mutations in the CFTR gene, is imperative in the design of corrective therapeutics for genetic diseases. Here, we show that delivery of Cas9 protein LNPs outperforms Cas9 mRNA LNPs when evaluated for <i>in vivo</i> lung editing as well as corrective CRISPR/Cas9 editing and functional recovery of the CFTR protein. These results demonstrate the ability to optimize the use of CRISPR/Cas9 LNPs for cystic fibrosis applications.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14348–14355"},"PeriodicalIF":9.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078454","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}
Nano LettersPub Date : 2025-09-17DOI: 10.1021/acs.nanolett.5c03583
Aria T. Ballance, , , Urice N. Tohgha, , , Amy Morren, , , Michael A. Susner, , , Jennifer S. Shumaker-Parry*, , and , Peter R. Stevenson*,
{"title":"Liquid-Phase Exfoliated 2D Nanomaterials for Enhanced Vibrational Circular Dichroism of Chiral Molecules","authors":"Aria T. Ballance, , , Urice N. Tohgha, , , Amy Morren, , , Michael A. Susner, , , Jennifer S. Shumaker-Parry*, , and , Peter R. Stevenson*, ","doi":"10.1021/acs.nanolett.5c03583","DOIUrl":"10.1021/acs.nanolett.5c03583","url":null,"abstract":"<p >Vibrational circular dichroism (VCD) spectroscopy is a powerful technique for stereochemical analysis, but its application is often limited by inherently weak polarization-dependent signal absorption intensities (e.g., 10<sup>–4</sup> to 10<sup>–5</sup>). This study investigates liquid-phase exfoliated (LPE) two-dimensional (2D) nanomaterials as a readily accessible and versatile platform for enhancing molecular VCD signals. We explored the optical interactions between chiral molecules (R)- and (S)-1,1’-bi(2-naphthol) (BINOL) and a range of LPE 2D materials possessing diverse electronic properties: semiconducting 2H-WS<sub>2</sub>, semimetallic 2H-TiS<sub>2</sub> and 2H-NbS<sub>2</sub>, metallic 3R-NbS<sub>2</sub> and Ti<sub>3</sub>C<sub>2</sub>T<sub><i>z</i></sub>, and magnetic metallic 2H-VS<sub>2</sub>. Significant VCD signal enhancement for BINOL was observed, reaching up to 2 orders of magnitude relative to BINOL alone. Overall, the 2D materials induced varied effects, including signal enhancement, signal dampening, peak shifts, and inversion of VCD handedness. This work demonstrates potential platforms for modulating and enhancing molecular VCD characteristics, offering a promising route toward more sensitive chiroptical molecular analysis and detection.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14363–14370"},"PeriodicalIF":9.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145071872","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}
Nano LettersPub Date : 2025-09-17DOI: 10.1021/acs.nanolett.5c03410
Lukas R. Jäger, , , Wei Wen Wong, , , Carsten Ronning, , and , Hark Hoe Tan*,
{"title":"Far-Field Directionality Control of Coupled InP Nanowire Lasers","authors":"Lukas R. Jäger, , , Wei Wen Wong, , , Carsten Ronning, , and , Hark Hoe Tan*, ","doi":"10.1021/acs.nanolett.5c03410","DOIUrl":"10.1021/acs.nanolett.5c03410","url":null,"abstract":"<p >Nanowire (NW) lasers are promising compact, coherent on-chip light sources for next-generation optical communication and imaging. However, controlling their emission directionality has been hindered by the complexities of lasing mode engineering and fabrication. Here, we demonstrate spatially engineered far-field emission from vertically emitting InP NW lasers by precisely controlling optical coupling between site-selective NWs, without postepitaxy transfer or alignment. Leveraging this process capability, we design and grow NW pairs and triplets that lase in the TE01 waveguide mode. By tuning the optical coupling gap, we transform their far-field profiles from doughnut-like to double-lobed, in close agreement with simulations. Numerical studies further show that arranging NW pairs in a periodic array enhances far-field directionality, demonstrating the potential for a directional lasing metasurface. Our results provide a foundation for efficient integration of coherent light generation and beam steering in on-chip light sources.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 39","pages":"14327–14332"},"PeriodicalIF":9.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078451","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}
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
