Nanoscale Horizons最新文献_第2页

Creating chirality in WSe₂ through screw dislocations by chemical vapor transport.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-03-20 DOI: 10.1039/d4nh00567h

Philip Putze, Tobias Ritschel, Paul Chekhonin, Jochen Geck, Daniel Wolf, Alexey A Popov, Bernd Büchner, Peer Schmidt, Silke Hampel

{"title":"Creating chirality in WSe2 through screw dislocations by chemical vapor transport.","authors":"Philip Putze, Tobias Ritschel, Paul Chekhonin, Jochen Geck, Daniel Wolf, Alexey A Popov, Bernd Büchner, Peer Schmidt, Silke Hampel","doi":"10.1039/d4nh00567h","DOIUrl":"https://doi.org/10.1039/d4nh00567h","url":null,"abstract":"Screw dislocation-driven nanostructures of two-dimensional transition metal dichalcogenides (2D TMDs) can feature chirality that enables prominent asymmetric optical properties. One of the outstanding representatives is WSe2 as it can exhibit intriguing new size and shape-dependent chemical and physical properties compared to its bulk counterpart. Crystal growth control in nanostructures with screw dislocation-driven growth is central for exploiting their structure-related properties. However, bottom-up syntheses of 2D TMDs usually contain 'trial and error' approaches. Here we report on the rational synthesis planning and realizing for the binary system W:Se to achieve chirality in nano-scale crystals by chemical vapor transport (CVT). For that purpose, key parameters were modelled based on thermodynamic datasets. Thus, crystal growth by CVT under addition of SeCl4 succeeds for right-handed spiral nanocrystals from 850 °C to 800 °C with a dwell time of 60 min, while left-handed spirals are obtained from 915 °C to 860 °C. Surface-fused SiO2 nanoparticles on an Si(100) substrate served as potential nucleation points. Chirality of screwed WSe2 was unprecedentedly investigated by circular-polarized Raman Spectroscopy and showed an intensity increase of the E12g mode of 29% and 15% for right and left-handed spirals, respectively. Pyramid-like WSe2 analyzed by atomic force microscopy exhibits step heights of around 10 nm. Electron backscatter diffraction patterns reveal a convex curvature for WSe2 with the curvature radii determined as Rx = (270 ± 32) μm and Ry = (141 ± 9) μm, respectively.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661651","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

An ultra-fast WSe₂ homojunction photodiode with a large linear dynamic range towards in-sensor image processing.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-03-13 DOI: 10.1039/d4nh00656a

Shaofeng Wen, Shuren Zhou, Yimin Gong, Rui Zhang, Xinyu Jia, Lingkang Kong, Haodong Fan, Yi Yin, Changyong Lan, Chun Li, Yong Liu

{"title":"An ultra-fast WSe2 homojunction photodiode with a large linear dynamic range towards in-sensor image processing.","authors":"Shaofeng Wen, Shuren Zhou, Yimin Gong, Rui Zhang, Xinyu Jia, Lingkang Kong, Haodong Fan, Yi Yin, Changyong Lan, Chun Li, Yong Liu","doi":"10.1039/d4nh00656a","DOIUrl":"https://doi.org/10.1039/d4nh00656a","url":null,"abstract":"The versatile photoresponse tunability of two-dimensional (2D) semiconductors achieved by tuning the gate voltage has opened promising pathways for in-sensor visual processing. However, the current limited dynamic range and slow response speed of the gate-tunable 2D photodetectors inhibit their implementation under challenging lighting conditions. Here, using a facile, efficient, and universal localized electrostatic screening strategy, we demonstrate an electrostatic screening enabled single-gate-tunable in-plane homojunction photodiode based on WSe2 with bipolar high dynamic ranges (HDRs) and ultrafast photoresponse. The demonstrated WSe2/PdSe2 van der Waals (vdW) stacking in-plane homojunction photodiode leveraging the efficient band alignment and less interface recombination inherited from its vdW nature exhibits a large physical linear dynamic range (LDR) of up to 142 dB and an ultrafast response time down to 8 ns. These superior properties ensure that the device captures high-precision HDR images and performs in-sensor image processing with low latency. Our results provide an effective strategy for constructing 2D photodetectors with tunable positive/negative responses and high LDRs, which are promising for in-sensor visual processing of scenes with HDRs.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622828","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

Framework nucleic acid-programmed aptamer-paclitaxel conjugates as targeted therapeutics for triple-negative breast cancer.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-03-13 DOI: 10.1039/d4nh00652f

Lin Li, Pengyao Wei, Tong Kong, Bo Yuan, Pan Fu, Yong Li, Yuhui Wang, Jianping Zheng, Kaizhe Wang

{"title":"Framework nucleic acid-programmed aptamer-paclitaxel conjugates as targeted therapeutics for triple-negative breast cancer.","authors":"Lin Li, Pengyao Wei, Tong Kong, Bo Yuan, Pan Fu, Yong Li, Yuhui Wang, Jianping Zheng, Kaizhe Wang","doi":"10.1039/d4nh00652f","DOIUrl":"https://doi.org/10.1039/d4nh00652f","url":null,"abstract":"Triple-negative breast cancer (TNBC) is highly invasive with a poor prognosis, and chemotherapy remains the clinical treatment of choice. Paclitaxel is a commonly used first-line chemotherapy drug, but its untargeted distribution poses clinical challenges. Inspired by antibody-drug conjugates, we develop a precisely structured framework nucleic acid-programmed aptamer-paclitaxel conjugate (FAPC) with chemically well-defined paclitaxel loading dosing, enabling the regulation of receptor-aptamer affinity to facilitate tumor-targeted chemotherapy. Utilizing framework nucleic acids as a precise addressing scaffold, we organize the AS1411 aptamer with accurate intermolecular spacing and find that an inter-aptamer spacing of 19.04 nm could enhance the affinity of the FAPC for tumor cells. Then, the multifunctional FAPC can disrupt actin reorganization to achieve cytotoxicity in tumor cells. Furthermore, the AS1411-specifically modified FAPC further enhances the structure-dependent selective accumulation of drugs at tumor sites in a human xenograft model of triple-negative breast cancer, subsequently leading to significantly improved antitumor efficacy and reduced toxicity. The FAPC provides a precisely programmable platform for efficient targeted delivery of chemotherapeutic agents to malignancies.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612711","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

An ultra-compact integrated phase shifter via electrically tunable meta-waveguides.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-03-11 DOI: 10.1039/d4nh00592a

Chengkun Dong, Xiaowen Gu, Yiyun He, Ziwei Zhou, Jiayi Wang, Zhihai Wu, Wenqi Wang, Tangsheng Chen, Jun Wu, Tong Qiu, Jun Xia

{"title":"An ultra-compact integrated phase shifter via electrically tunable meta-waveguides.","authors":"Chengkun Dong, Xiaowen Gu, Yiyun He, Ziwei Zhou, Jiayi Wang, Zhihai Wu, Wenqi Wang, Tangsheng Chen, Jun Wu, Tong Qiu, Jun Xia","doi":"10.1039/d4nh00592a","DOIUrl":"https://doi.org/10.1039/d4nh00592a","url":null,"abstract":"Integrated photonics has emerged as a pivotal technology in the advancement of next-generation computing and communication devices. Thermal optical phase shifters (OPSs) have been widely used to realize a tunable Mach-Zehnder interferometer (MZI) and a micro-ring resonator (MRR), which are the building bricks for the LSI/VLSI photonic integrated circuits. Due to the thermal crosstalk and the low modulation efficiency, thermal OPSs have large-scale size and high power consumption. In this work, we embed a Mie resonant metasurface into a waveguide and use the liquid crystal to tune the phase of the propagated light, which could realize a novel integrated phase shifter based on LC meta-waveguides. We use nanofabrication to prepare the meta-waveguide integrated MZI and MRR. By applying voltage, the output of the waveguide's intensity can be changed. Compared with thermo OPSs, this new modulator has the advantages of small size (20 μm × 0.35 μm), no thermal crosstalk, low power consumption (<10 nW), and easy large-scale integration. Additionally, we apply it to the convolutional architecture and verify that it has the potential to accelerate neural network computation.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143603227","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

Enhanced photothermal methane dry reforming through electronic interactions between nickel and yttrium.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-03-11 DOI: 10.1039/d5nh00013k

Xueying Zhang, Zeshu Zhang, Qishun Wang, Jianheng Xu, Xinyu Han, Jiakun Wang, Jia Liu, Cheng Rao, Xiangguang Yang, Yibo Zhang, Lu Wang

{"title":"Enhanced photothermal methane dry reforming through electronic interactions between nickel and yttrium.","authors":"Xueying Zhang, Zeshu Zhang, Qishun Wang, Jianheng Xu, Xinyu Han, Jiakun Wang, Jia Liu, Cheng Rao, Xiangguang Yang, Yibo Zhang, Lu Wang","doi":"10.1039/d5nh00013k","DOIUrl":"https://doi.org/10.1039/d5nh00013k","url":null,"abstract":"Dry reforming of methane (DRM) is a promising technology for converting greenhouse gases (CH4 and CO2) into syngas. However, the traditional thermal catalytic process requires high temperature, resulting in low selectivity, and coke-induced instability. In this study, a Y-doped nickel-based photothermal catalyst, NiY/fibrous nano-silica (KCC-1), was obtained for the DRM reaction, exhibiting excellent photothermal catalytic DRM activity with a CO yield rate of above 90.01 mmol g-1 h-1 at 450 °C. The spatial confinement effect of KCC-1 enhanced the catalyst stability, maintaining fresh activity for up to 40 hours. Various characterization techniques reveal that strong d-electron transfer from Y to Ni is beneficial for preserving metallic Ni, which in turn promotes the adsorption and activation of CH4. In situ DRIFTS and DFT theoretical studies further elucidate the mechanism that the Y-doped strategy not only facilitates the adsorption and activation of CO2 (due to the strong basicity of Y2O3) but also enhances the photothermal effect by facilitating the formation of metallic Ni0, resulting in a greater generation of p-CO32- intermediates to achieve excellent photothermal catalytic performance. The findings of this study are expected to provide a rare earth metal doping strategy for designing highly efficient photothermal catalysts for the synthesis of solar fuel.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143603229","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

Engineering energy bands in 0D-2D hybrid photodetectors: Cu-doped InP quantum dots on a type-III SnSe₂/MoTe₂ heterojunction.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-02-21 DOI: 10.1039/d4nh00663a

Jiabin Li, Dongxue Wang, Xiya Chen, Yao Zhou, Huanteng Luo, Tu Zhao, Sheng Hu, Zhaoqiang Zheng, Wei Gao, Xiao Liu

{"title":"Engineering energy bands in 0D-2D hybrid photodetectors: Cu-doped InP quantum dots on a type-III SnSe2/MoTe2 heterojunction.","authors":"Jiabin Li, Dongxue Wang, Xiya Chen, Yao Zhou, Huanteng Luo, Tu Zhao, Sheng Hu, Zhaoqiang Zheng, Wei Gao, Xiao Liu","doi":"10.1039/d4nh00663a","DOIUrl":"https://doi.org/10.1039/d4nh00663a","url":null,"abstract":"Two-dimensional (2D) self-driven photodetectors have emerged as a compelling area of research, offering advantages such as miniaturization, weak light detection, high photosensitivity, and low noise levels. However, current type-III 2D heterojunction photodetectors often suffer from low self-driven responsivity and medium Ilight/Idark ratios. In this work, a novel device architecture that addresses these challenges is constructed by incorporating Cu-doped InP/ZnSeS/ZnS core-shell quantum dots (QDs) onto a type-III SnSe2/MoTe2 2D heterojunction. The strategically engineered energy band structure of the Cu-doped QDs facilitates carrier transport with SnSe2/MoTe2 to form back-to-back type-II and type-III band alignments. As a result, under 532 nm illumination, the hybrid device exhibits remarkable visible light self-driven performance metrics with the help of the photogating effect: an ultra-low dark current of 23 fA, with responsivity and external quantum efficiency enhanced to 459 mA W-1 and 109%, respectively, surpassing theoretical values by fourfold compared to those of pure SnSe2/MoTe2, a low noise equivalent power (NEP) of 0.87 × 10-2 pW Hz-1/2, a realistic specific detectivity of 1.45 × 1011 Jones, a large Ilight/Idark ratio of 106 and a swift response time of 1.16 ms/1.14 ms with stable operation. These results demonstrate that energy band engineering of Cu-doped QDs can significantly enhance the performance of 2D type-III heterojunctions in the visible range, laying a foundation for future gate-tunable optoelectronic devices.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466486","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

One-dimensional molecular nanostructures interacting with two-dimensional metals.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-02-20 DOI: 10.1039/d4nh00622d

Pavel Kocán, Barbara Pieczyrak, Soshiro Umachi, Martin Cigánek, Pavel Sobotík, Ivan Ošťádal, Leszek Jurczyszyn, Jozef Krajčovič, Kazuyuki Sakamoto

{"title":"One-dimensional molecular nanostructures interacting with two-dimensional metals.","authors":"Pavel Kocán, Barbara Pieczyrak, Soshiro Umachi, Martin Cigánek, Pavel Sobotík, Ivan Ošťádal, Leszek Jurczyszyn, Jozef Krajčovič, Kazuyuki Sakamoto","doi":"10.1039/d4nh00622d","DOIUrl":"https://doi.org/10.1039/d4nh00622d","url":null,"abstract":"Electrons confined within the 2D layer of metals grown on silicon substrates exhibit exotic properties due to strong correlation effects. Their properties, such as their 2D superconductivity, have been frequently subjected to possible tuning by doping using charge transfer from adsorbed layers. Doping relies on adding electrons or holes to the system and the resulting shift of the Fermi level EF in the otherwise robust surface electronic structure. This strategy has not been sufficiently controlled in the case of an indium double layer grown on the Si(111) surface. This study provides an alternative approach relying on spatially periodic modification of the surface electronic structure of the 2D metal. Derivatives of diketopyrrolopyrroles (DPP) are used for the growth of perfectly ordered 1D-like molecular superstructures on top of the In double layer, imaged by scanning tunneling microscopy. The integral changes of electronic structure are measured by angle-resolved photoelectron spectroscopy and density functional theory calculations show local modification of the surface states near EF by the adsorbed molecules. This study demonstrates that the surface electronic states can be controllably patterned, using a proper bonding scheme. It is anticipated that the combination of the original 2D superconductor and the 1D-like patterning will motivate further research.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456417","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

Expression of concern: Electrothermal patches driving the transdermal delivery of insulin

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-02-20 DOI: 10.1039/D5NH90012C

Quentin Pagneux, Ran Ye, Li Chengnan, Alexandre Barras, Nathalie Hennuyer, Bart Staels, D. Caina, J. I. Avila Osses, Amar Abderrahmani, Valérie Plaisance, Valérie Pawlowski, Rabah Boukherroub, Sorin Melinte and Sabine Szunerits

引用次数: 0

Expression of concern: Innovative transdermal delivery of insulin using gelatin methacrylate-based microneedle patches in mice and mini-pigs

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-02-19 DOI: 10.1039/D5NH90011E

Bilal Demir, Lea Rosselle, Anna Voronova, Quentin Pagneux, Audrey Quenon, Valery Gmyr, Dorothee Jary, Nathalie Hennuyer, Bart Staels, Thomas Hubert, Amar Abderrahmani, Valerie Plaisance, Valerie Pawlowski, Rabah Boukherroub, Severine Vignoud and Sabine Szunerits

引用次数: 0

Nanoscale Horizons Emerging Investigator Series: Dr Jovana Milić, University of Fribourg, Switzerland

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2025-02-14 DOI: 10.1039/D5NH90010G

引用次数: 0