ACS Applied Nano Materials最新文献_第2页

Transdermal Insulin Delivery for Type 1 Diabetes Using Reverse Electrodialysis and Ionic Liquid Technology Based on a Size-Dependent Protein Delivery Study

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-26 DOI: 10.1021/acsanm.5c0017710.1021/acsanm.5c00177

Su-Bin Park, Junghyeon Ko, Jeong-Uk Kim, Suwan Jeon, Ye-Sol Kim, Hyeon-Jin Kim, Young-Hyeon An, Su-Hwan Kim and Nathaniel S. Hwang*,

{"title":"Transdermal Insulin Delivery for Type 1 Diabetes Using Reverse Electrodialysis and Ionic Liquid Technology Based on a Size-Dependent Protein Delivery Study","authors":"Su-Bin Park, Junghyeon Ko, Jeong-Uk Kim, Suwan Jeon, Ye-Sol Kim, Hyeon-Jin Kim, Young-Hyeon An, Su-Hwan Kim and Nathaniel S. Hwang*, ","doi":"10.1021/acsanm.5c0017710.1021/acsanm.5c00177","DOIUrl":"https://doi.org/10.1021/acsanm.5c00177https://doi.org/10.1021/acsanm.5c00177","url":null,"abstract":"Transdermal or topical skin delivery of protein therapeutics is currently limited due to the large molecular size of proteins and the dense structure of the skin. Although some nanoparticles and enhancers have been used to increase skin penetration and protein stability, few studies have examined the effect of protein size or the combination of enhancers on skin penetration. Here, we introduce Polycaprolactone (PCL) and Pluronic F-127-based polymeric nanoparticles (PNPs) to load different-sized proteins, including insulin (INS), trypsin inhibitor (TI), horseradish peroxidase (HRP), bovine serum albumin (BSA), and diamine oxidase (DAO). Utilizing a reverse electrodialysis (RED) battery and an ionic liquid (IL) system, we facilitated the delivery of protein-loaded PNPs (Protein_PNPs) up to depths of approximately 290 μm for INS and 153 μm for DAO noninvasively. When applied to the in vivo skin of type 1 diabetes-induced mice, the INS-loaded PNP (INS_PNP) was delivered transdermally with the IL+RED system, resulting in a normoglycemic state for up to 3 h. Our findings suggest that the IL+RED-assisted PNP skin protein delivery system holds promise for transdermal applications in protein therapeutics.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6509–6518 6509–6518"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767444","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}

引用次数: 0

Low-Energy Ion-Implanted Nanometer-Thick Metal Oxide Memristor for Random Number Generation at the Nanoscale

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-26 DOI: 10.1021/acsanm.4c0714410.1021/acsanm.4c07144

Sudheer, Rupam Mandal, Dilruba Hasina, Safiul Alam Mollick, Aparajita Mandal, Mukesh Ranjan and Tapobrata Som*,

{"title":"Low-Energy Ion-Implanted Nanometer-Thick Metal Oxide Memristor for Random Number Generation at the Nanoscale","authors":"Sudheer, Rupam Mandal, Dilruba Hasina, Safiul Alam Mollick, Aparajita Mandal, Mukesh Ranjan and Tapobrata Som*, ","doi":"10.1021/acsanm.4c0714410.1021/acsanm.4c07144","DOIUrl":"https://doi.org/10.1021/acsanm.4c07144https://doi.org/10.1021/acsanm.4c07144","url":null,"abstract":"Resistive random-access memory (ReRAM) devices have emerged to be a promising source for ample information storage in next-generation nonvolatile memories (NVMs) and true random number generation (TRNG)-based robust cybersecurity. However, cycle-to-cycle performance degradation at the nanoscale results in deviation of the normal probability distribution, limiting ReRAM applicability to micron-size devices. This work demonstrates the efficacy of low-energy Au-ion implantation in nanometer-thick HfOx films in achieving a superior ReRAM performance at the nanoscale toward TRNG application. The role of Au-ion implantation in a single amorphous HfOx layer is demonstrated to create high-performance memory cells at the nanoscale. Local probe microscopy analysis provides a spatial identification of homogeneously distributed reproducible conductive filament locations and its one-to-one correlation with surface topography. The Au-implanted films exhibit a highly stable, forming-free bipolar resistive switching, having well-separated set and reset transitions with significantly small fluctuations (as low as 3.6% and 3.2%, respectively). The films display a negligible cycle-to-cycle degradation in low and high resistive states, thereby resulting in an outstanding cumulative probability distribution. The chi-square tests further reveal that the low resistive state current is an excellent physical source of six distinct random states. Hence, the ion implantation on economically viable and fabrication-friendly HfOx material is found to be a robust technique to fabricate high-performance ReRAM devices for future ultrahigh-integration density NVMs and TRNG sources for cybersecurity applications.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6327–6335 6327–6335"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767223","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}

引用次数: 0

Dual-Band Kerr Sensing Empowered by Quasi-Bound States in the Continuum Strong Coupling in a Magneto-Optical Metamaterial

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-26 DOI: 10.1021/acsanm.4c0734310.1021/acsanm.4c07343

Ruxian Zhu, Leyi Chen*, Xiong Li, Zhizhen Zhao, Renli Xu* and Shaolong Tang*,

{"title":"Dual-Band Kerr Sensing Empowered by Quasi-Bound States in the Continuum Strong Coupling in a Magneto-Optical Metamaterial","authors":"Ruxian Zhu, Leyi Chen*, Xiong Li, Zhizhen Zhao, Renli Xu* and Shaolong Tang*, ","doi":"10.1021/acsanm.4c0734310.1021/acsanm.4c07343","DOIUrl":"https://doi.org/10.1021/acsanm.4c07343https://doi.org/10.1021/acsanm.4c07343","url":null,"abstract":"The magneto-optical (MO) effect was usually enhanced by the excitation of surface plasmons, surface lattice resonance, or coupling between them. Recently, bound states in the continuum (BIC) have been of great potential to boost the magneto-optical Kerr effect (MOKE) due to its high Q-factor and small mode volume. However, it is always limited to the transverse MOKE. Here, we realized the strong coupling between two Q-BICs with enhanced polar MOKE in a MO metamaterial composed of Ag double-step gratings and a magnetic dielectric layer. The origin of the two Q-BIC modes is fully investigated. One BIC is generated by the waveguide (WG) mode, and another BIC is formed by the interference between the WG mode and FP mode. In addition, two Kerr reversals are observed in the Kerr rotation angle spectrum due to the Q-BIC strong coupling, offering a viable strategy for developing dual-band magneto-plasmon sensors, with large FoM values of 2467/RIU and 5568/RIU. The FoM value achieved in this work is at least two times as large as the previously reported results of the same kind (FoM = 1823/RIU and 755/RIU). These findings offer a promising approach for achieving strong coupling induced by Q-BICs and designing novel MP nanostructures with the desired optical and MO responses.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6411–6418 6411–6418"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767445","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}

引用次数: 0

A Brain-Targeting Nanoprobe for On-Site BACE1 Detection and Reversal of Microglia-Derived Neuroinflammation

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-26 DOI: 10.1021/acsanm.5c0012310.1021/acsanm.5c00123

Xinyue Liu, Ruijie Cao, Yijing Dang*, Zhiai Xu and Wen Zhang*,

{"title":"A Brain-Targeting Nanoprobe for On-Site BACE1 Detection and Reversal of Microglia-Derived Neuroinflammation","authors":"Xinyue Liu, Ruijie Cao, Yijing Dang*, Zhiai Xu and Wen Zhang*, ","doi":"10.1021/acsanm.5c0012310.1021/acsanm.5c00123","DOIUrl":"https://doi.org/10.1021/acsanm.5c00123https://doi.org/10.1021/acsanm.5c00123","url":null,"abstract":"Beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) is a key enzyme that when abnormally expressed leads to the overproduction of β-amyloid protein (Aβ). Lead (Pb) exposure exacerbates Aβ accumulation by upregulating BACE1 levels, increasing the risk of cognitive impairments and neurodegenerative diseases. Additionally, Pb-induced elevation of BACE1 is implicated in immune regulation, influencing microglial polarization and neuroinflammation. To address this, we developed a glucosylated enzyme-responsive nanoprobe for BACE1 detection and neuroinflammation alleviation. Utilizing a fluorescence resonance energy transfer (FRET) platform, polydopamine (PDA) nanoparticles were designed to quench the near-infrared emission of donor IR780, conjugated to a BACE1-specific peptide substrate (CK-9). The selective cleavage of CK-9 by BACE1 restored the fluorescence of IR780, exhibiting clear linearity with BACE1 concentrations from 60 to 125 ng/mL and achieving a detection limit of 90.8 pM. The high reductive activity of catechol and quinone groups on PDA, combined with curcumin, provided efficacious ROS scavenging, promoting the polarization of microglia from a pro-inflammatory to an anti-inflammatory state. Moreover, these nanoprobes were specifically designed to cross the blood–brain barrier via GLUT1-mediated targeting, enabling the highly efficient and targeted reaction of Pb-induced BACE1 upregulation in vivo. This multifunctional approach expands the clinical potential of BACE1-targeted diagnostic and therapeutic strategies for neurodegenerative diseases.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6479–6489 6479–6489"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767447","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}

引用次数: 0

Multifunctional MXene-Based Hydrogel Remodels Regenerative Microenvironment and Facilitates Neurogenesis of Endogenous Neural Stem Cells for Spinal Cord Injury Recovery

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-25 DOI: 10.1021/acsanm.4c0726510.1021/acsanm.4c07265

Peijun Zhu, Lu Ge, Tong Luo, Maolin Qin, Yun Xu, Rongrong Hua, Suhong Lu, Mengqi Jin, Nuo Chen, Jiawei He, Qiang Liu, Zhanwei Ruan*, Liangliang Yang* and Hongyu Zhang*,

{"title":"Multifunctional MXene-Based Hydrogel Remodels Regenerative Microenvironment and Facilitates Neurogenesis of Endogenous Neural Stem Cells for Spinal Cord Injury Recovery","authors":"Peijun Zhu, Lu Ge, Tong Luo, Maolin Qin, Yun Xu, Rongrong Hua, Suhong Lu, Mengqi Jin, Nuo Chen, Jiawei He, Qiang Liu, Zhanwei Ruan*, Liangliang Yang* and Hongyu Zhang*, ","doi":"10.1021/acsanm.4c0726510.1021/acsanm.4c07265","DOIUrl":"https://doi.org/10.1021/acsanm.4c07265https://doi.org/10.1021/acsanm.4c07265","url":null,"abstract":"Endogenous neural stem cells (NSCs) hold promise as potential seed cells for spinal cord injury (SCI) repair. However, their migration to the injury site and subsequent neuronal differentiation, essential for rebuilding neural networks, are significantly hindered by an unfavorable lesion microenvironment [characterized by hypoxia, excessive reactive oxygen species (ROS), neuroinflammation, and acidity]. In this study, a conductive hydrogel for SCI treatment was designed by incorporating stromal cell-derived factor-1α (SDF-1α) and MXene nanosheets. This composite hydrogel demonstrated multiple therapeutic functions: first, SDF-1α released from the hydrogel recruited endogenous NSCs to the injury site; second, MXene nanosheets modified the microenvironment, enhancing NSC activation and differentiation by scavenging ROS and reprogramming macrophages to the M2 phenotype; third, the hydrogel’s electroconductivity, imparted by MXene nanosheets, further promoted NSC differentiation. Moreover, transcriptome analysis revealed that MXene nanosheets facilitated SCI recovery via the PI3K-Akt and calcium signaling pathways. This work represents the first development of an MXene-based multifunctional hydrogel for stimulating endogenous NSCs in SCI repair. The strategy of targeting endogenous NSCs while reshaping the hostile microenvironment for migration and neuronal differentiation introduces a treatment approach for SCI treatment with a significant potential for clinical applications.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6361–6379 6361–6379"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767326","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}

引用次数: 0

Self-Assembled Gd/Cyanine Nanoplatform for Magnetic Resonance Imaging Guided Photothermal Therapy of Thyroid Cancer

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-25 DOI: 10.1021/acsanm.5c0040910.1021/acsanm.5c00409

Changzhi Guo, Fulin Li, Shuang Wu, Chunxiang Li, Tingxing Hou, Guohua Li, Jing Guo, Xiaoxin Wang, Liguo Hao* and Zhongyuan Li*,

{"title":"Self-Assembled Gd/Cyanine Nanoplatform for Magnetic Resonance Imaging Guided Photothermal Therapy of Thyroid Cancer","authors":"Changzhi Guo, Fulin Li, Shuang Wu, Chunxiang Li, Tingxing Hou, Guohua Li, Jing Guo, Xiaoxin Wang, Liguo Hao* and Zhongyuan Li*, ","doi":"10.1021/acsanm.5c0040910.1021/acsanm.5c00409","DOIUrl":"https://doi.org/10.1021/acsanm.5c00409https://doi.org/10.1021/acsanm.5c00409","url":null,"abstract":"Thyroid cancer, a prevalent endocrine malignancy with rising incidence, necessitates advanced strategies for precise diagnosis and effective treatment. In this study, we develop a self-assembled gadolinium-cyanine coordination-driven nanoscale metal–organic particle (CyO/Gd NPs) that seamlessly integrates magnetic resonance imaging (MRI) and photothermal therapy (PTT) for enhanced theranostic applications. The coordination-driven self-assembly endows CyO/Gd NPs with superior photostability and significantly enhanced photothermal conversion efficiency (∼50.3%) under near-infrared laser irradiation, surpassing free cyanine dyes. These nanoparticles effectively induce apoptosis and necrosis in thyroid cancer cells and exhibit potent in vivo antitumor efficacy. Furthermore, the incorporated Gd3+ ions act as T1-weighted MRI contrast agents, facilitating precise tumor localization and real-time monitoring of therapeutic progress. By bridging imaging and therapy, CyO/Gd NPs offer a robust multifunctional platform for thyroid cancer theranostics, paving the way for next-generation integrated diagnostic and therapeutic nanoplatforms.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6604–6614 6604–6614"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767377","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}

引用次数: 0

Constructing Pt Clusters on Oxidation-Functionalized Carbon Nanotubes for Robust Electrocatalytic Hydrogen Production

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-25 DOI: 10.1021/acsanm.5c0018810.1021/acsanm.5c00188

Jie Gan, Jiale Shi, Huiyun Wang, Jie Chang, Huhan Wang, Shanqing Li, Changbao Zhao, Maojiang Zhang* and Guozhong Wu*,

{"title":"Constructing Pt Clusters on Oxidation-Functionalized Carbon Nanotubes for Robust Electrocatalytic Hydrogen Production","authors":"Jie Gan, Jiale Shi, Huiyun Wang, Jie Chang, Huhan Wang, Shanqing Li, Changbao Zhao, Maojiang Zhang* and Guozhong Wu*, ","doi":"10.1021/acsanm.5c0018810.1021/acsanm.5c00188","DOIUrl":"https://doi.org/10.1021/acsanm.5c00188https://doi.org/10.1021/acsanm.5c00188","url":null,"abstract":"Enhancing the activity and stability of platinum-based electrocatalysts for the hydrogen evolution reaction (HER) is critical for efficient water electrolysis. In this study, an efficient and scalable approach via electron-beam irradiation is employed to induce the chemical reduction of Pt ions and construct the coordination environment of Pt clusters. Two nanotube-supported Pt catalysts (Pt/CNT-O and Pt/CNT) are studied to probe the support effects on regulating the structure and electronic state of Pt by combining electrocatalytic measurements, catalyst characterizations, kinetic analysis, and density functional theoretical calculations. The Pt/CNT-O catalyst shows superior HER mass activity and durability after prolonged 6000 cycles testing compared to the Pt/CNT catalyst. This robust hydrogen evolution activity is ascribed to the more Pt(111) facets as well as favorable Pt4–Cl/C–O active sites toward desirable Pt 4f binding energy and Gibbs free energy for HER. These insights could guide the rational design and surface-interface tuning of carbon-supported Pt-based electrocatalysis for sustainable hydrogen energy production.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6519–6529 6519–6529"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767379","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}

引用次数: 0

Mo-Doped Ni–Co Selenide Nanosheets as High-Performance Electrodes for Aqueous Ni–Zn Batteries and Supercapacitors

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-25 DOI: 10.1021/acsanm.5c0009410.1021/acsanm.5c00094

Minghui Xu, Shuangxing Cui, Xiaokang Fu, Conghui Zhang, Guochang Li* and Lei Han*,

{"title":"Mo-Doped Ni–Co Selenide Nanosheets as High-Performance Electrodes for Aqueous Ni–Zn Batteries and Supercapacitors","authors":"Minghui Xu, Shuangxing Cui, Xiaokang Fu, Conghui Zhang, Guochang Li* and Lei Han*, ","doi":"10.1021/acsanm.5c0009410.1021/acsanm.5c00094","DOIUrl":"https://doi.org/10.1021/acsanm.5c00094https://doi.org/10.1021/acsanm.5c00094","url":null,"abstract":"Metal selenides have become prominent electrode materials in aqueous energy storage systems. Nonetheless, improving their electrochemical performance through a simple doping approach and a reasonable structural design remains a significant challenge. In this study, a nickel–cobalt bimetallic selenide with triangular-leaf nanosheet morphology derived from ZIF was synthesized via a two-step process, encompassing ion etching and one-pot doping with selenizing. Due to the rich redox activity and the effective modulation of electronic structure induced by Mo doping, the Mo-(Ni,Co)Se/NF electrode provides a high specific capacity of 1.687 mAh cm–2 at 2 mA cm–2. When paired with commercial zinc foil to form an aqueous nickel–zinc battery, the Mo-(Ni,Co)Se//Zn cell exhibits a high specific capacity of 1.515 mAh cm–2 at 2 mA cm–2 and satisfactory cycling stability (mains at 75.53% after 1000 cycles). Furthermore, upon assembling the Mo-(Ni,Co)Se/NF electrode with activated carbon to construct an asymmetric supercapacitor, the device achieves an energy density of 0.770 mWh cm–2 and retains 99.6% capacity after 10,000 cycles. This study presents an effective and straightforward approach for synthesizing Mo-doped metal selenide nanomaterials for aqueous energy storage devices.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6454–6464 6454–6464"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767328","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}

引用次数: 0

Thermal Management of Anti-Stokes Photoluminescence of Near-Infrared Dyes Using MXene Nanosheets: Implications for Passive Heating at the Nanoscale

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-25 DOI: 10.1021/acsanm.5c0134110.1021/acsanm.5c01341

Oleg Dimitriev*, Stefano Ippolito, Benjamin Chacon and Yury Gogotsi,

{"title":"Thermal Management of Anti-Stokes Photoluminescence of Near-Infrared Dyes Using MXene Nanosheets: Implications for Passive Heating at the Nanoscale","authors":"Oleg Dimitriev*, Stefano Ippolito, Benjamin Chacon and Yury Gogotsi, ","doi":"10.1021/acsanm.5c0134110.1021/acsanm.5c01341","DOIUrl":"https://doi.org/10.1021/acsanm.5c01341https://doi.org/10.1021/acsanm.5c01341","url":null,"abstract":"MXene coatings with low thermal emissivity serve as emergent, highly efficient passive heating materials. However, passive heating is usually observed and explored at the macroscale using the micrometer-thick MXene films, whereas application of this phenomenon at the nano- and molecular scale remains unexplored. Here, we use the thermally sensitive, hot-band absorption (HBA) assisted anti-Stokes photoluminescence (ASPL) phenomenon of specific near-infrared dyes as a probe to investigate passive heating of diluted MXene dispersions at the nano- and molecular scale. Diverse thermal emissivities influence the electron activation in the hot band of these dyes differently, leading to changes in the dynamics of ASPL whose intensity increases with increasing temperature. We found that while Nb4C3Tx MXene, with relatively high thermal emissivity, renders little interference to the ASPL thermal activation energy, Ti3C2Tx MXene, with low thermal emissivity, leads to increasing activation energy, associated with the passive heating effect. The latter process was observed at an MXene concentration as low as 0.01 mg/mL, and it becomes more significant at higher concentration values, for which an increase of the activation energy by a factor of 2 was observed upon increasing Ti3C2Tx concentration by an order of magnitude. Our findings indicate that MXene nanosheets can act as the nano/molecular scale heaters and be applied for localized thermal management of quantum processes at the nano- and molecular scale to control HBA-assisted light upconversion, where meticulous fine-tuning of the efficiency is needed.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6773–6781 6773–6781"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767215","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}

引用次数: 0

InAs Nanowires Elevated on Si(001) by Nanopedestals for CMOS-Compatible Fabrication

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-03-25 DOI: 10.1021/acsanm.5c0007110.1021/acsanm.5c00071

Seung-Chang Lee*, Yingbing Jiang and Steve R. J. Brueck,

{"title":"InAs Nanowires Elevated on Si(001) by Nanopedestals for CMOS-Compatible Fabrication","authors":"Seung-Chang Lee*, Yingbing Jiang and Steve R. J. Brueck, ","doi":"10.1021/acsanm.5c0007110.1021/acsanm.5c00071","DOIUrl":"https://doi.org/10.1021/acsanm.5c00071https://doi.org/10.1021/acsanm.5c00071","url":null,"abstract":"Catalyst-free, selective growth of InAs nanowires (NWs) elevated on a Si(001) substrate by (111)-faceted nanopedestals for CMOS compatibility is investigated with molecular beam epitaxy. It begins with processing the planar substrate surface into an array of three-dimensional (3D) Si core–SiO2 shell nanostructures, where each Si core has a lateral dimension of ∼50 nm and a height of ∼300 nm, analogous to a vertical pillar. A side edge of every core tip is treated with dry/wet etching through the SiO2 shell film to fabricate a deep nanometer-scale (∼10 nm in both width and height), (111)-faceted nanopedestal. This provides a selective nucleation site of InAs for a position- and direction-controlled ∼1.2 μm-long, ∼55-nm-wide NW, axially along Si[111] and radially over a nearby SiO2 shell. Relieving the misfit strain by the local compliance and edge-induced relaxation associated with its shape and size, the nanopedestal enhances the critical thickness dramatically in 3D modeling and provides an NW that can accommodate mechanical and structural impacts in the postgrowth process for CMOS compatibility. The postgrowth manipulation for planar processing and high-density integration by bending and segmentation is addressed.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 13","pages":"6445–6453 6445–6453"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767216","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}

引用次数: 0