Nano Futures最新文献_第2页

MoS2 nanocomposites for biomolecular sensing, disease monitoring, and therapeutic applications MoS2纳米复合材料用于生物分子传感、疾病监测和治疗应用

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-07-04 DOI: 10.1088/2399-1984/ace178

Karthick Harini, K. Girigoswami, P. Pallavi, Pemula Gowtham, Anbazhagan Thirumalai, Kamalakkannan Charulekha, A. Girigoswami

{"title":"MoS2 nanocomposites for biomolecular sensing, disease monitoring, and therapeutic applications","authors":"Karthick Harini, K. Girigoswami, P. Pallavi, Pemula Gowtham, Anbazhagan Thirumalai, Kamalakkannan Charulekha, A. Girigoswami","doi":"10.1088/2399-1984/ace178","DOIUrl":"https://doi.org/10.1088/2399-1984/ace178","url":null,"abstract":"The unique physicochemical properties of MoS2 nanocomposites have drawn escalation in attention for the diagnosis and therapy of cancer. Mostly the 2D forms of MoS2 find application in sensing, catalysis, and theranostics, where it was traditionally applied in lubrication and battery industries as electrodes or intercalating agents. As nanostructures, MoS2 has a very high surface-to-volume ratio, and that helps in the engineering of structures and surfaces to promote absorption of a wide range of therapeutics and biomolecules through covalent or non-covalent interaction. This surface engineering provides excellent colloidal stability to MoS2 and makes them ideal nanomedicines with higher selectivity, sensitivity, and biomarker sensing ability. Furthermore, MoS2 exhibits exceptionally well optical absorption of NIR radiation and photothermal conversion, which helps in the NIR-responsive release of payloads in photothermal and photodynamic therapy. There are several reports that the fabricated MoS2 nanomedicines can selectively counter the tumor microenvironment, which leads to the accumulation of therapeutics or imaging agents in the diseased tissues to improve the therapeutic effects decreasing the adverse effects on the healthy cells. An overview of the basic structure and properties of MoS2 is presented in this article, along with an elaborative description of its morphology. At the same time, an attempt was made in this review to summarize the latest developments in the MoS2 structure, surface engineering, and nanocomposite formulations for improving biocompatibility, bioavailability, biomolecular sensing, and theranostic applications.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47023231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Wearable and printable devices for electrolytes sensing 电解质传感用可穿戴和可打印装置

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-07-04 DOI: 10.1088/2399-1984/ace40e

Yanfang Wang, Suman Ma, Linyu Hu, Z. Fan, Yuanjing Lin

引用次数: 0

Computing strain-dependent energy transfer from quantum dots to 2D materials 计算从量子点到二维材料的应变相关能量转移

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-06-01 DOI: 10.1088/2399-1984/acddb2

E. Simsek, B. Aslan

引用次数: 0

Mesoporous silica shell in a core@shell nanocomposite design enables antibacterial action with multiple modes of action 介孔二氧化硅外壳在core@shell纳米复合材料设计使抗菌作用与多种模式的作用

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-06-01 DOI: 10.1088/2399-1984/acddb3

A. Pamukcu, M. Karakaplan, Şen Karaman Didem

{"title":"Mesoporous silica shell in a core@shell nanocomposite design enables antibacterial action with multiple modes of action","authors":"A. Pamukcu, M. Karakaplan, Şen Karaman Didem","doi":"10.1088/2399-1984/acddb3","DOIUrl":"https://doi.org/10.1088/2399-1984/acddb3","url":null,"abstract":"Core@shell structured nanocomposites have received significant attention for their synergistic mode of antibacterial action. Identification of the accommodated unit’s function in the core@shell nanostructure is necessary in order to determine whether antibacterial synergism against bacterial cell growth that is provided within the same core@shell structure. Herein, a novel nanostructure(s) composed of a cerium oxide core and a porous silica shell (CeO2@pSiO2) accomodating curcumin and lectin was prepared, and the antibacterial synergism provided by the nanocomposite was identified. The resulting spherical-shaped CeO2@pSiO2 nanostructure allowed accommodation of curcumin loading (9 w/w%) and a lectin (concanavalin A) coating (15 w/w%). The antibacterial synergism was tested using a minimal inhibitory concentration assay against an Escherichia coli Gram-negative bacterial strain. Furthermore, the mechanisms of bacterial cell disruption induced by the curcumin-loaded and concanavalin A-coated CeO2@pSiO2 core@shell structure, namely the nanoantibiotic (nano-AB) and its design components, were identified. Our findings reveal that the mesoporous silica shell around the CeO2 core within the nano-AB design aids the accommodation of curcumin and concanavalin A and promotes destruction of bacterial cell motility and the permeability of the inner and outer bacterial cell membranes. Our findings strongly indicate the promising potential of a mesoporous silica shell around nanoparticles with a CeO2 core to provide synergistic antibacterial treatment and attack bacterial cells by different mechanisms of action.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42570305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Reliable p-type organic permeable base transistors—the missing component for integrated circuits 可靠的p型有机渗透基极晶体管——集成电路中缺少的元件

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-05-15 DOI: 10.1088/2399-1984/acd59a

Juan Wang, A. Bonil, Jörn Vahland, H. Kleemann

{"title":"Reliable p-type organic permeable base transistors—the missing component for integrated circuits","authors":"Juan Wang, A. Bonil, Jörn Vahland, H. Kleemann","doi":"10.1088/2399-1984/acd59a","DOIUrl":"https://doi.org/10.1088/2399-1984/acd59a","url":null,"abstract":"Due to their nm-range channel length, vertical organic transistors are gaining scientific interest to overcome the frequency limitations of lateral organic transistor. Especially, vertical organic permeable base transistors (OPBTs) with a structure resembling a vacuum-tube-triode stand out due to their excellent electrical performance. Recently, n-type OPBTs have been demonstrated with excellent performance and great potential to be applied in high-frequency logic circuits, display driving circuits, and light-emitting devices. However, achieving adequate p-type OPBTs to catch up with the performance of n-type devices is still challenging. Here, we report on the peculiar finding that the extended exposure of p-type OPBTs to ambient air during the fabrication has a positive effect on the electrical performance and tremendously improves the yield of devices to 100% . Upon exposing the fresh device to air, oxygen diffuses into the semiconductor layer interacting with the base electrode, which facilitates the formation of pinholes in the base and creates an insulator layer around the base. Moreover, as oxygen acts as a p-dopants to the p-type semiconductors used in this work, the device performance is further improved, manifesting in an increased on-state current. However, as the exposure time increases, different p-type organic semiconductors show different behavior depending on their ionization potential. Comparing two semiconductor materials with a difference in their ionization potential of 0.4 eV, we show that long-term degradation could be effectively suppressed. Therefore, the positive effect of air exposure could be utilized to optimize p-type OPBTs, which offers a simple and universal way to construct high performance p-type OPBTs and possibly also complementary circuits.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":"23 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61167425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 silver nanoparticle (AgNP)-loaded Bi2Se3 topological insulator p-n heterojunction photodiode for a near-infrared (NIR) photodetector 一种用于近红外(NIR)光电探测器的负载银纳米粒子(AgNP) Bi2Se3拓扑绝缘体p-n异质结光电二极管

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-05-09 DOI: 10.1088/2399-1984/acd3ca

V. Elangovan, V. Vaiyapuri, Aysha Parveen R, A. Jayaram, Harish Santhanakrishnan, Navaneethan Mani

{"title":"A silver nanoparticle (AgNP)-loaded Bi2Se3 topological insulator p-n heterojunction photodiode for a near-infrared (NIR) photodetector","authors":"V. Elangovan, V. Vaiyapuri, Aysha Parveen R, A. Jayaram, Harish Santhanakrishnan, Navaneethan Mani","doi":"10.1088/2399-1984/acd3ca","DOIUrl":"https://doi.org/10.1088/2399-1984/acd3ca","url":null,"abstract":"Near-infrared (NIR) photons are expanding advanced applications in optoelectronics. However, while 2D materials like graphene offer an attractive route for NIR photodetection, the alternative for high-performance NIR detection is still evolving. Hence, solution-processed n-Bi2Se3 /p-Si-based 2D heterojunction photodiodes have been fabricated here and used for high-performance NIR detection. Further, we report high photoresponsivity of 248 mA W−1 at 1100 nm, high external quantum efficiency of 22, 23 and 28% for Ag-loaded (at 5, 7.5 and 10%) Bi2Se3 and good stability. The chemical states of Bi2Se3 and Ag are detected using the core-level spectra of x-ray photoelectron spectroscopy. Photoresponse I–V characteristics are investigated under both dark and illumination; the high photocurrent achieved for Ag-loaded Bi2Se3 and the increase in the forward photocurrent under both dark and bright conditions are reported. The temporal photoresponse curve confirms the good stability (photoswitching behavior) and reproducibility with a response time of 0.74 s and a decay time of 0.18 s. Therefore, these unique performance and device parameters of a manufactured photodiode strongly recommend as a potential heterojunction photodiode for an NIR photodetector.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42652324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

New nanocomposite membranes based on polybenzimidazole with improved fuel cell performance at high temperatures 基于聚苯并咪唑的新型纳米复合膜提高了燃料电池的高温性能

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-05-04 DOI: 10.1088/2399-1984/acd28a

Khadijeh Hooshyari, M. B. Karimi, Hossein Beydaghi, Huaneng Su, Alireza Salimi Ben

引用次数: 0

Biologically plausible information propagation in a complementary metal-oxide semiconductor integrate-and-fire artificial neuron circuit with memristive synapses 生物学上可信的信息传播在互补金属氧化物半导体集成和发射人工神经元电路与忆阻突触

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-04-21 DOI: 10.1088/2399-1984/accf53

Lorenzo Benatti, T. Zanotti, D. Gandolfi, J. Mapelli, F. Puglisi

{"title":"Biologically plausible information propagation in a complementary metal-oxide semiconductor integrate-and-fire artificial neuron circuit with memristive synapses","authors":"Lorenzo Benatti, T. Zanotti, D. Gandolfi, J. Mapelli, F. Puglisi","doi":"10.1088/2399-1984/accf53","DOIUrl":"https://doi.org/10.1088/2399-1984/accf53","url":null,"abstract":"Neuromorphic circuits based on spikes are currently envisioned as a viable option to achieve brain-like computation capabilities in specific electronic implementations while limiting power dissipation given their ability to mimic energy-efficient bioinspired mechanisms. While several network architectures have been developed to embed in hardware the bioinspired learning rules found in the biological brain, such as spike timing-dependent plasticity, it is still unclear if hardware spiking neural network architectures can handle and transfer information akin to biological networks. In this work, we investigate the analogies between an artificial neuron combining memristor synapses and rate-based learning rule with biological neuron response in terms of information propagation from a theoretical perspective. Bioinspired experiments have been reproduced by linking the biological probability of release with the artificial synapse conductance. Mutual information and surprise have been chosen as metrics to evidence how, for different values of synaptic weights, an artificial neuron allows to develop a reliable and biological resembling neural network in terms of information propagation and analysis.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49013274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

In-situ monitoring of plasmon-induced nanoscale photocatalytic activity from Au-decorated TiO2 microflowers 等离子体诱导的au修饰TiO2微花纳米光催化活性的原位监测

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-04-21 DOI: 10.1088/2399-1984/accf54

S. Sahoo, Binaya Kumar Sahu, Shivam Shukla, Sanjeev Srivastava, P. Sahoo

{"title":"In-situ monitoring of plasmon-induced nanoscale photocatalytic activity from Au-decorated TiO2 microflowers","authors":"S. Sahoo, Binaya Kumar Sahu, Shivam Shukla, Sanjeev Srivastava, P. Sahoo","doi":"10.1088/2399-1984/accf54","DOIUrl":"https://doi.org/10.1088/2399-1984/accf54","url":null,"abstract":"Noble-metal-decorated semiconductor photocatalysts have attracted noticeable attention due to their enhanced photocatalytic activity. Herein, we have synthesized the pure rutile phase of TiO2 nanorods, with microflower morphology, using a hydrothermal method and decorated them with Au to observe plasmon-induced enhanced photocatalytic efficiency. The optical bandgap engineering through Au-decorated TiO2 introduces midgap states that help with charge compensation during photodegradation studies. The surface plasmonic resonance peak of Au is observed together with the defect peak of TiO2, extending the absorption of the solar spectrum from the UV to the visible region. The quenching in photoluminescence intensity with increased Au thickness indicates the formation of a Schottky junction at the interface of Au and TiO2 that helps to reduce photogenerated charge carrier recombination. The softening of the E g Raman mode and photothermal effects originate from the nonradiative decay of localized surface plasmons through electron–phonon and phonon–phonon relaxation. The photocatalytic degradation of Rhodamine 6G is monitored by exposing the sample to UV and visible light sources under Raman spectroscopy. The Au decoration plays a crucial role in promoting charge separation, Schottky junction creation, photothermal effects, and UV to visible light absorption to enhance photocatalytic activity, which can be explained on the basis of the charge transfer mechanism. Our in-situ photodegradation study at the interface of noble metal and semiconducting materials will pave the way toward improving the understanding of plasmon-enhanced photocatalytic applications.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46052221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Recent developments in the preparation and assembly of two-dimensional plate materials in Langmuir–Blodgett films: a review Langmuir-Blodgett薄膜中二维板材料制备与组装的最新进展

IF 2.1 4区材料科学

Nano Futures Pub Date : 2023-04-04 DOI: 10.1088/2399-1984/acca56

Tianyue Zhao, Ranlong Wang, Lin Li, T. Jiao

引用次数: 0