ACS Nano最新文献_第8页

Omnidirectionally Stretchable Spin-Valve Sensor Array with Stable Giant Magnetoresistance Performance

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c15964

Lili Pan, Yali Xie, Huali Yang, Xilai Bao, Jinxia Chen, Mengting Zou, Run-Wei Li

{"title":"Omnidirectionally Stretchable Spin-Valve Sensor Array with Stable Giant Magnetoresistance Performance","authors":"Lili Pan, Yali Xie, Huali Yang, Xilai Bao, Jinxia Chen, Mengting Zou, Run-Wei Li","doi":"10.1021/acsnano.4c15964","DOIUrl":"https://doi.org/10.1021/acsnano.4c15964","url":null,"abstract":"Flexible magnetic sensors, which have advantages such as deformability, vector field sensing, and noncontact detection, are an important branch of flexible electronics and have significant applications in fields such as magnetosensitive electronic skin. Human skin surfaces have complicated deformations, which pose a demand for magnetic sensors that can withstand omnidirectional strain while maintaining stable performance. However, existing flexible magnetic sensor arrays can only withstand stretching along specific directions and are prone to failure under complicated deformations. Here, we demonstrate an omnidirectionally stretchable spin-valve sensor array with high stretchability and excellent performance. By integrating the modulus-distributed structure with liquid metal, the sensor can maintain its performance under complex deformations, enabling the overall system with omnidirectional stretchability. The fabricated spin-valve sensor exhibits a nearly unchanged giant magnetoresistance ratio of 8% and a maximum sensitivity of 0.93%/Oe upon omnidirectional strain up to 86% and can maintain stable performance without fatigue for over 1000 stretching cycles. Furthermore, this spin-valve sensor array is characterized by stable sensing performance for magnetic fields under complicated deformations and can be applied as a magnetosensitive electronic skin. Our results provide insights into the development of next-generation stretchable and wearable magnetoelectronics.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"79 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057337","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}

引用次数: 0

Construction of Nanocellulose Aerogels with Environmental Drying Strategy without Organic Solvent Displacement for High-Efficiency Solar Steam Generation

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c12228

Shiyu Zong, Chi Feng, Fuhou Lei, Liwei Zhu, Jianxin Jiang, Jiufang Duan

{"title":"Construction of Nanocellulose Aerogels with Environmental Drying Strategy without Organic Solvent Displacement for High-Efficiency Solar Steam Generation","authors":"Shiyu Zong, Chi Feng, Fuhou Lei, Liwei Zhu, Jianxin Jiang, Jiufang Duan","doi":"10.1021/acsnano.4c12228","DOIUrl":"https://doi.org/10.1021/acsnano.4c12228","url":null,"abstract":"Solar desalination is one of the effective means to alleviate water scarcity, in which aerogel-like evaporators have attracted extensive attention in the field of efficient desalination. However, the current preparation methods for aerogels still mainly rely on high-cost solutions, such as freeze-drying or supercritical drying. Herein, a preparation scheme for aerogels that can be realized under atmospheric pressure conditions is reported. In this paper, a foam skeleton template (FST) strategy is proposed, in which flake graphite is entangled by cellulose nanofibers (CNFs) and codispersed between the foam cell walls, and subsequently connected with the nascent Ca2+ in the inner wall to form a tough and stable three-dimensional network structure, which can effectively avoid the structural collapse caused by atmospheric drying. The cellulose/graphite aerogel (CGA) prepared using the FST strategy possesses lightweight (36 mg cm–3) and porous (porosity >97%) properties. The 3D porous structure and wetting characteristics of the CGA provided excellent energy management, rapid water transport capability, and a reduced enthalpy of evaporation, which enabled it to achieve a fast water evaporation rate of 3.8 kg m–2 h–1 with 98.4% energy efficiency. This FST strategy provides a solution for the low-cost development of aerogel and desalination.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"39 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057192","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}

引用次数: 0

Smart Directional Liquid Manipulation on Curvature-Ratchet Surfaces

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c18229

Jiaqi Miao, Alan C. H. Tsang

{"title":"Smart Directional Liquid Manipulation on Curvature-Ratchet Surfaces","authors":"Jiaqi Miao, Alan C. H. Tsang","doi":"10.1021/acsnano.4c18229","DOIUrl":"https://doi.org/10.1021/acsnano.4c18229","url":null,"abstract":"Structured surfaces leverage interfacial energy for directional liquid manipulation without external power, showing tremendous potential in microfluidics, green energy and biomedical applications. While the interplay of interfacial energy between solid surfaces and liquids is crucial for liquid manipulation, a systematic understanding of how the balance in liquid–solid interfacial energy affects liquid behaviors remains lacking. Here, using the curvature-ratchet surface as a generic example, we reveal the complex directional liquid dynamics inherent in the subtle regulation of liquid–solid interfacial energy. We show that curvature and tilt features regulate Laplace pressure asymmetry to enable directional, bidirectional and reverse liquid manipulation. These processes can be modulated by surface free energy and liquid surface tension, and we define their ratio as a new dimensionless number ζ to characterize the liquid–solid interfacial energy relationship. The balanced liquid control happens when ζ ∼ 1, which facilitates versatile liquid behaviors, e.g., fan-shaped spreading, gradient-induced redirection, and back-and-forth transport on various surface array arrangements, all resulting from matching structural designs with the proper ζ. Inspired by this, we showcase an innovative liquid-based information encryption technique, where the liquid displays correct information on preprogrammed surfaces only at designated ζ values. This study lays the groundwork for smart directional liquid manipulation and broadens its application domains.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"22 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057164","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}

引用次数: 0

Ultrasensitive Flexible NO₂ Sensors with Remote-Controllable ADC-Electropolymerized Conducting Polymers on Plastic.

IF 15.8 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c14179

Jiyun Lee, Jeong Hwan Chun, Youngnan Kim, Donggeun Lee, Tae Woong Yoon, Guobing Zhang, Wi Hyoung Lee, Boseok Kang

{"title":"Ultrasensitive Flexible NO2 Sensors with Remote-Controllable ADC-Electropolymerized Conducting Polymers on Plastic.","authors":"Jiyun Lee, Jeong Hwan Chun, Youngnan Kim, Donggeun Lee, Tae Woong Yoon, Guobing Zhang, Wi Hyoung Lee, Boseok Kang","doi":"10.1021/acsnano.4c14179","DOIUrl":"https://doi.org/10.1021/acsnano.4c14179","url":null,"abstract":"Alternating- and direct-current (ADC) bipolar electropolymerization (EP) offers an efficient and scalable approach for the lateral synthesis of conjugated macromolecules, enabling the simultaneous polymerization and deposition of large conducting polymer films with intriguing fractal-like ramified topographies onto arbitrary insulating substrates under remote control. In this study, we presented the remote synthesis of poly(3,4-ethylenedioxythiophene) (PEDOT):anion sensing films on a plastic substrate, aimed at their use in flexible nitrogen dioxide (NO2) gas sensors. Notably, the PEDOT:ClO3 films exhibited excellent gas-sensing characteristics, with a sensitivity of 54.8% to 50 ppm of NO2, minimal cross-sensitivity to other gases, and a detection limit of 0.726 parts per billion (ppb) for NO2. The sensing mechanism of the ADC-bipolar electropolymerized PEDOT:anion films was examined using spectroscopic analysis, microstructural characterization, and interaction energy computations. The findings revealed that the enhanced sensitivity of the PEDOT:ClO3 film was attributable to an appropriate electrostatic interaction between the counteranion (ClO3-) and NO2 molecules at the molecular scale, as well as the large surface area of the film resulting from hierarchical macrostructures. This study showed the practical application of the ADC-bipolar EP method for flexible organic gas sensors.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":" ","pages":""},"PeriodicalIF":15.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062208","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}

引用次数: 0

Role of Superlattice Phonons in Charge Localization Across Quantum Dot Arrays.

IF 15.8 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c15199

Bokang Hou, Matthew J Coley-O'Rourke, Uri Banin, Michael Thoss, Eran Rabani

{"title":"Role of Superlattice Phonons in Charge Localization Across Quantum Dot Arrays.","authors":"Bokang Hou, Matthew J Coley-O'Rourke, Uri Banin, Michael Thoss, Eran Rabani","doi":"10.1021/acsnano.4c15199","DOIUrl":"https://doi.org/10.1021/acsnano.4c15199","url":null,"abstract":"Understanding charge transport in semiconductor quantum dot (QD) assemblies is important for developing the next generation of solar cells and light-harvesting devices based on QD technology. One of the key factors that governs the transport in such systems is related to the hybridization between the QDs. Recent experiments have successfully synthesized QD molecules, arrays, and assemblies by directly fusing the QDs, with enhanced hybridization leading to high carrier mobilities and coherent band-like electronic transport. In this work, we theoretically investigate the electron transfer dynamics across a finite CdSe-CdS core-shell QD array, considering up to seven interconnected QDs in one dimension. We find that, even in the absence of structural and size disorder, electron transfer can become localized by the emergent low-frequency superlattice vibrational modes when the connecting neck between QDs is narrow. On the other hand, we also identify a regime where the same vibrational modes facilitate coherent electron transport when the connecting necks are wide. Overall, we elucidate the crucial effects of electronic and superlattice symmetries and their couplings when designing high-mobility devices based on QD superlattices.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":" ","pages":""},"PeriodicalIF":15.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062206","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}

引用次数: 0

Amyloid Targeting-Gold Nanoparticles-Assisted X-ray Therapy Rescues Islet β-Cells from Amyloid Fibrils and Restores Insulin Homeostasis.

IF 15.8 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c13916

Helen Forgham, Stetson Van Matre, Ka Hang Karen Chung, Muhammad Sajid Tahir, Syed Aoun Ali, Kai Kikuchi, Amandeep Kaur, Ruirui Qiao, Aleksandr Kakinen, Ahmad Zaman Qamar, Thomas Paul Davis, Ibrahim Javed

{"title":"Amyloid Targeting-Gold Nanoparticles-Assisted X-ray Therapy Rescues Islet β-Cells from Amyloid Fibrils and Restores Insulin Homeostasis.","authors":"Helen Forgham, Stetson Van Matre, Ka Hang Karen Chung, Muhammad Sajid Tahir, Syed Aoun Ali, Kai Kikuchi, Amandeep Kaur, Ruirui Qiao, Aleksandr Kakinen, Ahmad Zaman Qamar, Thomas Paul Davis, Ibrahim Javed","doi":"10.1021/acsnano.4c13916","DOIUrl":"https://doi.org/10.1021/acsnano.4c13916","url":null,"abstract":"Type-2-diabetes is a metabolic disorder where misfolding and oligomerization of islet amyloid polypeptide (IAPP) around islet-β cells oligomerizes and participates in the pathology. The oligomeric stage is toxic but transitory and leads to the formation of mature amyloid fibrils. The pathological specifics of mature amyloid fibrils are poorly understood. Here, we demonstrate that IAPP amyloids make a gel-like transition, increasing the viscosity of the local microenvironment and encasing and impeding islet-β cells in their ability to sense glucose and release insulin. Using dual-targeted gold nanoparticles (AuNPs) capped with amyloid-fragments of βCasein and anti-IAPP antibodies, we show that X-ray irradiation of AuNPs when bound to IAPP amyloids results in therapeutic remodelling of IAPP amyloids, a reduction in viscosity of the solution, and restoration of glucose/insulin homeostasis. This study establishes that mature IAPP amyloids can participate in the progressive pathology of type-2-diabetes by suppressing insulin responsiveness at the single islet-cell level. It also identifies a therapeutic model of reversal using AuNPs-mediated X-ray therapy, and this approach can be rationally expanded to other amyloid pathologies, such as Alzheimer's and Parkinson's diseases.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":" ","pages":""},"PeriodicalIF":15.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062136","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}

引用次数: 0

On-Demand Photoactivation of DNA-Based Motor Motion.

IF 15.8 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c13068

Selma Piranej, Hiroaki Ogasawara, Luona Zhang, Krista Jackson, Alisina Bazrafshan, Khalid Salaita

{"title":"On-Demand Photoactivation of DNA-Based Motor Motion.","authors":"Selma Piranej, Hiroaki Ogasawara, Luona Zhang, Krista Jackson, Alisina Bazrafshan, Khalid Salaita","doi":"10.1021/acsnano.4c13068","DOIUrl":"https://doi.org/10.1021/acsnano.4c13068","url":null,"abstract":"A major challenge in the field of synthetic motors relates to mimicking the precise, on-demand motion of biological motor proteins, which mediates processes such as cargo transport, cell locomotion, and cell division. To address this challenge, we developed a system to control the motion of DNA-based synthetic motors using light. DNA motors are composed of a central chassis particle modified with DNA \"legs\" that hybridize to RNA \"fuel\", and move upon enzymatic consumption of RNA. We first concealed RNA fuel sites using photocleavable oligonucleotides that block DNA leg binding. Upon UV activation, the RNA blocking strands dissociate, exposing the RNA fuel and initiating active, directional motion. We also created a \"brake\" system using photocleavable DNA stalling strands, anchoring the motors until UV light removes the \"brake\" while simultaneously \"fueling\" the motors, initiating spatiotemporally controlled stop → go motion. Additionally, we modified the \"brake\" system to activate the motors via a chemical input, while an optical input is required to fuel the motors. This dual-input approach, functioning as an \"AND\" gate, demonstrates the potential for DNA motors to perform light-triggered computational tasks. Our work provides a proof of concept for enhancing the complexity and functionality of synthetic motors.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":" ","pages":""},"PeriodicalIF":15.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062155","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}

引用次数: 0

Reconfigurable Magnetic Inhibitor for Domain Wall Logic and Neuronal Devices.

IF 15.8 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c12503

Christoph A Durner, Andrea Migliorini, Jae-Chun Jeon, Stuart S P Parkin

引用次数: 0

Advancing High-Throughput Cellular Atomic Force Microscopy with Automation and Artificial Intelligence

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c07729

Ophélie Thomas- -Chemin, Sébastien Janel, Zeyd Boumehdi, Childérick Séverac, Emmanuelle Trevisiol, Etienne Dague, Vincent Duprés

{"title":"Advancing High-Throughput Cellular Atomic Force Microscopy with Automation and Artificial Intelligence","authors":"Ophélie Thomas- -Chemin, Sébastien Janel, Zeyd Boumehdi, Childérick Séverac, Emmanuelle Trevisiol, Etienne Dague, Vincent Duprés","doi":"10.1021/acsnano.4c07729","DOIUrl":"https://doi.org/10.1021/acsnano.4c07729","url":null,"abstract":"Atomic force microscopy (AFM) has reached a significant level of maturity in biology, demonstrated by the diversity of modes for obtaining not only topographical images but also insightful mechanical and adhesion data by performing force measurements on delicate samples with a controlled environment (e.g., liquid, temperature, pH). Numerous studies have applied AFM to describe biological phenomena at the molecular and cellular scales, and even on tissues. Despite these advances, AFM is not established as a diagnostic tool in the biomedical field. This article describes the reasons for this gap, focusing on one of the main weaknesses of bio-AFM: its low data throughput. We review current efforts to improve the automation of AFM measurements in particular on living cells, as well as the developments in automating data analysis. For the latter, artificial intelligence (AI) is progressively employed to classify data to distinguish healthy and diseased cells or tissues. Finally, we propose a roadmap to foster the application of bio-AFM into medical diagnostics.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"17 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057329","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}

引用次数: 0

Ultrafast Photoflash Synthesis of High-Entropy Oxide Nanoparticles

IF 17.1 1区材料科学

ACS Nano Pub Date : 2025-01-30 DOI: 10.1021/acsnano.4c18277

Jihyun Baek, Yue Jiang, Dongwon Ka, Yuzhe Li, Yifan Wang, Sungsoon Kim, Adam Wallace Potter, Zengqing Zhuo, Jinghua Guo, Xiaolin Zheng

{"title":"Ultrafast Photoflash Synthesis of High-Entropy Oxide Nanoparticles","authors":"Jihyun Baek, Yue Jiang, Dongwon Ka, Yuzhe Li, Yifan Wang, Sungsoon Kim, Adam Wallace Potter, Zengqing Zhuo, Jinghua Guo, Xiaolin Zheng","doi":"10.1021/acsnano.4c18277","DOIUrl":"https://doi.org/10.1021/acsnano.4c18277","url":null,"abstract":"High-entropy metal oxides (HEOs) have recently received growing attention for broad energy conversion and storage applications due to their tunable properties. HEOs typically involve the combination of multiple metal cations in a single oxide lattice, thus bringing distinctive structures, controllable elemental composition, and tunable functional properties. Many synthesis methods for HEOs have been reported, such as solid-state reactions and carbon thermal shock methods. These methods frequently are energy-intensive or require relatively expensive heating equipment. In this work, we report an ultrafast photoflash synthesis method for HEO nanoparticles on diverse substrates. The energy input is provided by a commercial Xe photoflash unit, which triggers exothermic reactions to convert metal salt precursors to HEO nanoparticles within tens of milliseconds. The formation of HEO nanoparticles is attributed to the ultrafast heating (∼106 K/s) and cooling (∼105 K/s) rates of the photoflash and overall high temperature (>1000 K) during the ultrafast synthesis process. When the synthesized CoNiFeCrMn oxide (HEO) is tested as an oxygen evolution reaction electrocatalyst, it shows similar activity to similar materials prepared by other methods. We believe this photoflash synthesis provides a simple method for many others to synthesize diverse HEOs and explore their properties and potential applications.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"11 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057172","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}

引用次数: 0