Nanoscale Research Letters最新文献

{"title":"Ultra-confined Propagating Exciton–Plasmon Polaritons Enabled by Cavity-Free Strong Coupling: Beating Plasmonic Trade-Offs","authors":"Yipei Wang,&nbsp;Aoning Luo,&nbsp;Chunyan Zhu,&nbsp;Zhiyong Li,&nbsp;Xiaoqin Wu","doi":"10.1186/s11671-022-03748-7","DOIUrl":"10.1186/s11671-022-03748-7","url":null,"abstract":"<div><p>Hybrid coupling systems consisting of transition metal dichalcogenides (TMD) and plasmonic nanostructures have emerged as a promising platform to explore exciton–plasmon polaritons. However, the requisite cavity/resonator for strong coupling introduces extra complexities and challenges for waveguiding applications. Alternatively, plasmonic nano-waveguides can also be utilized to provide a non-resonant approach for strong coupling, while their utility is limited by the plasmonic confinement-loss and confinement-momentum trade-offs. Here, based on a cavity-free approach, we overcome these constraints by theoretically strong coupling of a monolayer TMD to a single metal nanowire, generating ultra-confined propagating exciton–plasmon polaritons (PEPPs) that beat the plasmonic trade-offs. By leveraging strong-coupling-induced reformations in energy distribution and combining favorable properties of surface plasmon polaritons (SPPs) and excitons, the generated PEPPs feature ultra-deep subwavelength confinement (down to 1-nm level with mode areas ~ 10^–4 of <i>λ</i>²), long propagation length (up to ~ 60 µm), tunable dispersion with versatile mode characters (SPP- and exciton-like mode characters), and small momentum mismatch to free-space photons. With the capability to overcome the trade-offs of SPPs and the compatibility for waveguiding applications, our theoretical results suggest an attractive guided-wave platform to manipulate exciton–plasmon interactions at the ultra-deep subwavelength scale, opening new horizons for waveguiding nano-polaritonic components and devices.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9674826/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40695276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Retraction Note: Conductive Gels: Properties and Applications of Nanoelectronics","authors":"Nguyen Dinh Trung,&nbsp;Dinh Tran Ngoc Huy,&nbsp;Maria Jade Catalan Opulencia,&nbsp;Holya A. Lafta,&nbsp;Azher M. Abed,&nbsp;Dmitry Olegovich Bokov,&nbsp;Kahramon Shomurodov,&nbsp;Hoang Van Thuc Master,&nbsp;Ali Thaeer Hammid,&nbsp;Ehsan Kianfar","doi":"10.1186/s11671-022-03746-9","DOIUrl":"10.1186/s11671-022-03746-9","url":null,"abstract":"","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9663761/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40684942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"On the Paramagnetic-Like Susceptibility Peaks at Zero Magnetic Field in (hbox{WSe}_{2-x}hbox{Te}_{x}) Single Crystals","authors":"Shiu-Ming Huang,&nbsp;Pin-Cing Wang,&nbsp;Kuo-Yi Hung,&nbsp;Fu-En Cheng,&nbsp;Chang-Yu Li,&nbsp;Mitch Chou","doi":"10.1186/s11671-022-03743-y","DOIUrl":"10.1186/s11671-022-03743-y","url":null,"abstract":"<div><p>A weakly temperature-dependent paramagnetic-like susceptibility peak at zero magnetic field is observed in <span>(hbox{WSe}_{2-x}hbox{Te}_{x})</span> with only marginal amount of ferromagnetic impurities. The ferromagnetic hysteresis loop and the magnetic moment splitting between zero-field-cooled and field-cooled processes indicate ferromagnetism in the samples. The paramagnetic-like susceptibility peak height is proportional to the remanent magnetic moment of hysteresis loops. High-resolution transmission electron microscope image supports that the observed ferromagnetic feature originates from lattice distortion. These results imply that the weakly temperature-dependent paramagnetic-like susceptibility peak originates from weak lattice distortion and/or superparamagnetism.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9649580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40675915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Passivation and Interlayer Effect of Zr(i-PrO)4 on Green CuGaS2/ZnS/Zr(i-PrO)4@Al2O3 and Red CuInS2/ZnS/Zr(i-PrO)4@Al2O3 QD Hybrid Powders","authors":"Minji Ko,&nbsp;Soyeon Yoon,&nbsp;Yun Jae Eo,&nbsp;Keyong Nam Lee,&nbsp;Young Rag Do","doi":"10.1186/s11671-022-03741-0","DOIUrl":"10.1186/s11671-022-03741-0","url":null,"abstract":"<div><p>Broadband emissive I–III–VI quantum dots (QDs) are synthesized as efficient and stable I–III–VI QDs to be used as eco-friendly luminescent materials in various applications. Here, we introduce the additional passivation of zirconium isopropoxide (Zr(i-PrO)₄) to improve the optical properties and environmental stability of green-emitting CuGaS₂/ZnS (G-CGS/ZnS) and red-emitting CuInS₂/ZnS (R-CIS/ZnS) QDs. The photoluminescence quantum yield (PLQY) of both resultant Zr(i-PrO)₄-coated G-CGS/ZnS and R-CIS/ZnS QDs reaches similar values of ~ 95%. In addition, the photostability and thermal-stability of G-CGS/ZnS/Zr(i-PrO)₄ and R-CIS/ZnS/Zr(i-PrO)₄ QDs are improved by reducing the ligand loss via encapsulation of the ligand-coated QD surface with Zr(i-PrO)₄. It is also proved that the Zr(i-PrO)₄-passivated interlayer mitigates the further degradation of I-III-V QDs from ligand loss even under harsh conditions during additional hydrolysis reaction of aluminum tri-sec-butoxide (Al(sec-BuO)₃), forming easy-to-handle G-CGS/ZnS and R-CIS/ZnS QD-embedded Al₂O₃ powders. Therefore, the introduction of a Zr(i-PrO)₄ complex layer potentially provides a strong interlayer to mitigate degradation of I–III–VI QD-embedded Al₂O₃ hybrid powders as well as passivation layer for protecting I–III–VI QD.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9640527/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40453114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing","authors":"Facai Wu,&nbsp;Chien-Hung Chou,&nbsp;Tseung-Yuen Tseng","doi":"10.1186/s11671-022-03744-x","DOIUrl":"10.1186/s11671-022-03744-x","url":null,"abstract":"<div><p>Optoelectronic memristor is a promising candidate for future light-controllable high-density storage and neuromorphic computing. In this work, light-tunable resistive switching (RS) characteristics are demonstrated in the CMOS process-compatible ITO/HfO₂/TiO₂/ITO optoelectronic memristor. The device shows an average of 79.24% transmittance under visible light. After electroforming, stable bipolar analog switching, data retention beyond 10⁴ s, and endurance of 10⁶ cycles are realized. An obvious current increase is observed under 405 nm wavelength light irradiation both in high and in low resistance states. The long-term potentiation of synaptic property can be achieved by both electrical and optical stimulation. Moreover, based on the optical potentiation and electrical depression of conductances, the simulated Hopfield neural network (HNN) is trained for learning the 10 × 10 pixels size image. The HNN can be successfully trained to recognize the input image with a training accuracy of 100% in 13 iterations. These results suggest that this optoelectronic memristor has a high potential for neuromorphic application.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9640510/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40686178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Visual Cu2+ Detection of Gold-Nanoparticle Probes and its Employment for Cu2+ Tracing in Circuit System","authors":"Tzu-Yu Ou,&nbsp;Chien-Feng Lo,&nbsp;Kuan-Yi Kuo,&nbsp;Yu-Pin Lin,&nbsp;Sung-Yu Chen,&nbsp;Chia-Yun Chen","doi":"10.1186/s11671-022-03742-z","DOIUrl":"10.1186/s11671-022-03742-z","url":null,"abstract":"<div><p>Highly sensitive, simple and reliable colorimetric probe for Cu²⁺-ion detection was visualized with the L-cysteine functionalized gold nanoparticle (LS-AuNP) probes. The pronounced sensing of Cu²⁺ with high selectivity was rapidly featured with obvious colour change that enabled to visually sense Cu²⁺ ions by naked eyes. By employing systemic investigations on crystallinities, elemental compositions, microstructures, surface features, light absorbance, zeta potentials and chemical states of LS-AuNP probes, the oxidation-triggered aggregation effect of LS-AuNP probes was envisioned. The results indicated that the mediation of Cu²⁺ oxidation coordinately caused the formation of disulfide cystine, rendering the removal of thiol group at AuNPs surfaces. These features reflected the visual colour change for the employment of tracing Cu²⁺ ions in a quantitative way.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9622959/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40436584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"H2O2/pH Dual-Responsive Biomimetic Nanoenzyme Drugs Delivery System for Enhanced Tumor Photodynamic Therapy","authors":"Xinyuan Li,&nbsp;Qing Ji,&nbsp;Chao Yan,&nbsp;Ziyu Zhu,&nbsp;Zhihui Yan,&nbsp;Ping Chen,&nbsp;Yisen Wang,&nbsp;Li Song","doi":"10.1186/s11671-022-03738-9","DOIUrl":"10.1186/s11671-022-03738-9","url":null,"abstract":"<div><p>Phototherapy has been recognized as a photochemical process to treat tumor via induce cancer cells necrosis and death, with minimal invasiveness, higher selectivity, and few side effects. However, the therapy effects of phototherapy are often compromised by the hypoxia, high levels of hydrogen peroxide, and glutathione of tumor microenvironment (TME). Therefore, we constructed a catalase-like activity bionic metal–organic framework drugs delivery system (FA-EM@MnO₂/ZIF-8/ICG) with tumor microenvironment controllable releasing. In this system, photosensitizer indocyanine green (ICG) was introduced into zeolite imidazole salt skeleton 8 (ZIF-8) by one-step methods, forming ZIF-8/ICG nano-platform, which can effectively avoid ICG-induced phototoxicity and aggregation-induced quenching during transport. MnO₂ with catalase-like activity was coated on the surface of ZIF-8/ICG nano-platform, which made it have the ability of self-supplying O₂ under the condition of H₂O₂ in TME. Exposure under near-infrared light can alleviate the anoxic TME, thus improving the phototherapy efficiency. In addition, folate-functionalized erythrocyte membrane is coated on the surface of MnO₂/ZIF-8/ICG, which can endow FA-EM@MnO₂/ZIF-8/ICG with the ability of targeted drug administration and immune elimination avoidance. Therefore, FA-EM@MnO₂/ZIF-8/ICG nano-platform has the catalase-like activity, which can alleviate the oxidative stress state of TME and provide a beneficial environment for photodynamic therapy of tumor.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9618007/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40456091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Visible-Light-Stimulated Synaptic Phototransistors Based on CdSe Quantum Dot/In–Ga–Zn–O Hybrid Channels","authors":"En-bo Fu,&nbsp;Yu Liu,&nbsp;Xiang-Rui Hou,&nbsp;Ye Feng,&nbsp;Chun-lei Yang,&nbsp;Yan Shao","doi":"10.1186/s11671-022-03739-8","DOIUrl":"10.1186/s11671-022-03739-8","url":null,"abstract":"<div><p>Light-stimulated synaptic devices are promising candidates for the development of artificial intelligence systems because of their unique properties, which include broad bandwidths, low power consumption, and superior parallelism. The key to develop such devices is the realization of photoelectric synaptic behavior in them. In this work, visible-light-stimulated synaptic transistors based on CdSe quantum dot (CdSe QD)/amorphous In–Ga–Zn–O hybrid channels are proposed. This design can not only improve the charge separation efficiency of the photogenerated carriers, but also can induce delayed decay of the photocurrent. The improved charge separation efficiency enhances the photoelectric properties significantly, while the delayed decay of the photocurrent led to the realization of photoelectric synaptic behaviors. This simple and efficient method of fabricating light-stimulated phototransistors may inspire new research progress into the development of artificial intelligence systems.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9613833/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40649818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Low-Consumption Synaptic Devices Based on Gate-All-Around InAs Nanowire Field-Effect Transistors","authors":"Chaofei Zha,&nbsp;Wei Luo,&nbsp;Xia Zhang,&nbsp;Xin Yan,&nbsp;Xiaomin Ren","doi":"10.1186/s11671-022-03740-1","DOIUrl":"10.1186/s11671-022-03740-1","url":null,"abstract":"<div><p>In this work, an artificial electronic synaptic device based on gate-all-around InAs nanowire field-effect transistor is proposed and analyzed. The deposited oxide layer (In₂O₃) on the InAs nanowire surface serves as a charge trapping layer for information storage. The gate voltage pulse serves as stimuli of the presynaptic membrane, and the drain current and channel conductance are treated as post-synaptic current and weights of the postsynaptic membrane, respectively. At low gate voltages, the device simulates synaptic behaviors including short-term depression and long-term depression. By increasing the amplitude and quantity of gate voltage pulses, the transition from short-term depression to long-term potentiation can be achieved. The device exhibits a large memory window of over 1 V and a minimal energy consumption of 12.5 pJ per synaptic event. This work may pave the way for the development of miniaturized low-consumption synaptic devices and related neuromorphic systems.</p></div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9613821/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40652188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Large Dense Periodic Arrays of Vertically Aligned Sharp Silicon Nanocones","authors":"Dirk Jonker,&nbsp;Erwin J. W. Berenschot,&nbsp;Niels R. Tas,&nbsp;Roald M. Tiggelaar,&nbsp;Arie van Houselt,&nbsp;Han J. G. E. Gardeniers","doi":"10.1186/s11671-022-03735-y","DOIUrl":"10.1186/s11671-022-03735-y","url":null,"abstract":"<div><p>Convex cylindrical silicon nanostructures, also referred to as silicon nanocones, find their value in many applications ranging from photovoltaics to nanofluidics, nanophotonics, and nanoelectronic applications. To fabricate silicon nanocones, both bottom-up and top-down methods can be used. The top-down method presented in this work relies on pre-shaping of silicon nanowires by ion beam etching followed by self-limited thermal oxidation. The combination of pre-shaping and oxidation obtains high-density, high aspect ratio, periodic, and vertically aligned sharp single-crystalline silicon nanocones at the wafer-scale. The homogeneity of the presented nanocones is unprecedented and may give rise to applications where numerical modeling and experiments are combined without assumptions about morphology of the nanocone. The silicon nanocones are organized in a square periodic lattice, with 250 nm pitch giving arrays containing 1.6 billion structures per square centimeter. The nanocone arrays were several mm² in size and located centimeters apart across a 100-mm-diameter single-crystalline silicon (100) substrate. For single nanocones, tip radii of curvature &lt; 3 nm were measured. The silicon nanocones were vertically aligned, baring a height variation of &lt; 5 nm (&lt; 1%) for seven adjacent nanocones, whereas the height inhomogeneity is &lt; 80 nm (&lt; 16%) across the full wafer scale. The height inhomogeneity can be explained by inhomogeneity present in the radii of the initial columnar polymer mask. The presented method might also be applicable to silicon micro- and nanowires derived through other top-down or bottom-up methods because of the combination of ion beam etching pre-shaping and thermal oxidation sharpening.</p><h3>Graphic abstract</h3><p>A novel method is presented where argon ion beam etching and thermal oxidation sharpening are combined to tailor a high-density single-crystalline silicon nanowire array into a vertically aligned single-crystalline silicon nanocones array with &lt; 3 nm apex radius of curvature tips, at the wafer scale.</p>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":715,"journal":{"name":"Nanoscale Research Letters","volume":"17 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9573847/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33513304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}