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A 3D polyacrylonitrile nanofiber and flexible polydimethylsiloxane macromolecule combined all-solid-state composite electrolyte for efficient lithium metal batteries.

Lu Gao, Jianxin Li, Bushra Sarmad, Bowen Cheng, Weimin Kang, Nanping Deng,

All-solid-state polymer electrolytes have received widespread attention due to their superior safety over liquid electrolytes that are prone to leaks. However, poor ionic conductivity and uncontrollable lithium dendrite growth have greatly limited the rapid development of polymer electrolytes. Hence, we report a composite polymer electrolyte combining a polyacrylonitrile (PAN) electrospun ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Electrochemical intercalations of divalent ions inside Ni/Zn co-doped cobalt sulfide nanoparticle decorated carbon spheres with superior capacity.

Muhammad Asif, Muhammad Rashad, Zeeshan Ali,

Among post-lithium ion batteries, magnesium ion batteries (MIBs) are receiving growing attention due to their divalent nature, intrinsic low cost, dendrite free cycling, and atmospheric stability. However, their realization is constrained because of the absence of suitable cathodes that can accommodate Mg2+ with fast reversibility. To bypass the sluggish movement ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Spin-phonon coupling in epitaxial SrRuO3 heterostructures.

Seung Gyo Jeong, Soo Yeon Lim, Jiwoong Kim, Sungkyun Park, Hyeonsik Cheong, Woo Seok Choi,

Spin-phonon coupling is one of the fundamental interactions in functional materials, indispensable for understanding their unexpected magnetic ground states. Ferromagnetic SrRuO3 is a correlated metal with the potential for utilization in novel spintronic devices and serves as a promising platform for studying spin-phonon interactions. In this study, we used Raman ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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A controllable and efficient method for the fabrication of a single HfC nanowire field-emission point electron source aided by low keV FIB milling.

Shuai Tang, Jie Tang, Ta-Wei Chiu, Jun Uzuhashi, Dai-Ming Tang, Tadakatsu Ohkubo, Masanori Mitome, Fumihiko Uesugi, Masaki Takeguchi, Lu-Chang Qin,

A single hafnium carbide (HfC) nanowire field-induced electron emitter with a sharp tip apex is fabricated by Pt deposition and focused ion beam (FIB) milling. The structure of the electron emitter is characterized by scanning transmission electron microscopy (STEM) and atom probe tomography (APT). The HfC nanowire is single-crystalline with ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Mapping the thermal entrenchment behavior of Pd nanoparticles on planar SiO2 supports.

Abha Gosavi, Chad Mirkin, Justin Notestein,

Thermal treatment of metal nanoparticles at temperatures above 1000 °C leads to the formation of nanopores in amorphous SiO2 planar supports. In this work, we employ Pd/SiO2 as a model system to investigate how the initial size and distribution of nanoparticles on the SiO2 surface affects the behavior of the ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Polaron transport in hybrid CH3NH3PbI3 perovskite thin films.

Anusit Thongnum, Udomsilp Pinsook,

A comprehensive study of the transport properties of a prototypical CH3NH3PbI3 thin film is presented. The polaron-longitudinal optical (LO) phonon scattering mechanism, based on Low-Pines's polaron mobility, was studied to elucidate the charge-carrier mobility. We found that the calculated mobilities showed very good quantitative agreement with the experimental data measured ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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An ab initio approach on the asymmetric stacking of GaAs 111 nanowires grown by a vapor-solid method.

In Won Yeu, Gyuseung Han, Cheol Seong Hwang, Jung-Hae Choi,

This study provides an ab initio thermodynamics approach to take a step forward in the theoretical modeling on the growth of GaAs nanowires. In order to understand the effects of growth conditions on the involvement of stacking faults and polytypism, we investigated the vapor-phase growth kinetics under arbitrary temperature-pressure conditions ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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A suspended metasurface achieves complete light absorption: a 50 nm-thick optical nanomicrophone.

Jipeng Xu, Xiaowei Jiang, Chucai Guo, Yanting Guo, Rui Yan, Jianfa Zhang, Zhihong Zhu, Zhongqi Tan, Ken Liu,

Considerably subtle vibrations can be detected by light signals. Commonly, this is achieved based on the phase change of light that can be attributed to the vibration of a movable mirror, which has been used in gravitational wave detection. For a homogeneous dielectric membrane, the thinner the membrane, the greater ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Benchmarked capacitive performance of a 330 μm-thick NaxV2O5/CC monolithic electrode via synergism of a hierarchical pore structure and ultrahigh-mass-loading.

Ying-Chu Chen, Yu-Kuei Hsu,

To address the longstanding issue of conventional supercapacitors, viz. their energy and power deliveries are largely attenuated by the poor packing density of particularly the active electrodes, an ultracompact yet porous monolithic electrode is put forward in the present study. Particularly, it is built on electroactive α'-NaxV2O5 with the areal ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Self-degrading graphene sheets for tumor therapy.

Ievgen S Donskyi, Ying Chen, Philip Nickl, Guy Guday, Haishi Qiao, Katharina Achazi, Andreas Lippitz, Wolfgang E S Unger, Christoph Böttcher, Wei Chen, Mohsen Adeli, Rainer Haag,

Low biodegradability of graphene derivatives and related health risks are the main limiting factors for their in vivo biomedical applications. Here, we present the synthesis of enzyme-functionalized graphene sheets with self-degrading properties under physiological conditions and their applications in tumor therapy. The synergistic enzyme cascade glucose oxidase and myeloperoxidase are ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Polaron and bipolaron induced charge carrier transportation for enhanced photocatalytic H2 production.

T R Naveen Kumar, P Karthik, B Neppolian,

Photocatalysis is one of the facile approaches for efficient solar energy conversion and storage. However, rapid charge carrier recombination considerably decreases solar to energy conversion efficiency. Herein, polaron and bipolaron rich polypyrrole (PPy) has been utilized as a solid support for effective photogenerated charge carrier separation. Simple oxidative polymerization using ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Ligand & band gap engineering: tailoring the protocol synthesis for achieving high-quality CsPbI3 quantum dots.

Ehsan Hassanabadi, Masoud Latifi, Andrés F Gualdrón-Reyes, Sofia Masi, Seog Joon Yoon, Macarena Poyatos, Beatriz Julián-López, Iván Mora-Seró,

Hot-injection has become the most widespread method used for the synthesis of perovskite quantum dots (QDs) with enormous interest for application in optoelectronic devices. However, there are some aspects of the chemistry involved in this synthesis that have not been completely investigated. In this work, we synthesized ultra-high stable CsPbI3 ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Air-thermal processing of hierarchically porous metal-organic frameworks.

Miaomiao Jia, Lei Mai, Zhanjun Li, Wanbin Li,

Metal-organic frameworks (MOFs) show great potential for various applications. The functions of MOFs are closely related to their porous structures and lattice integrities. However, the generally existing guest solvent/linker molecules and crystalline defects will alter internal microstructures and microenvironments of MOFs. Meanwhile, although MOFs have tailorable pore structures within the ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Synthesis and optical properties of a Y3(Al/Ga)5O12:Ce3+,Cr3+,Nd3+ persistent luminescence nanophosphor: a promising near-infrared-II nanoprobe for biological applications.

Luyan Wu, Jie Hu, Qilin Zou, Yaling Lin, Decai Huang, Dejian Chen, Hongyu Lu, Haomiao Zhu,

Persistent luminescence nanophosphors (PLNPs) emitting in the second near-infrared window (1000-1700 nm, NIR-II) are emerging as one promising class of in vivo bio-imaging agents due to their unique advantages including non-autofluorescence and low optical scattering in tissues. Currently, it remains a great challenge to synthesize nanosized lanthanide-doped inorganic NIR-II phosphors ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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A new family of two-dimensional ferroelastic semiconductors with negative Poisson's ratios.

Jun-Hui Yuan, Ge-Qi Mao, Kan-Hao Xue, Jiafu Wang, Xiang-Shui Miao,

Two-dimensional (2D) materials with both ferroelasticity and negative Poisson's ratios have attracted intensive interest, but it is very rare to have both ferroelasticity and negative Poisson's ratios in a single material. Directional positive and negative Poisson's ratios in a switchable ferroelastic dielectric may enable non-destructive readout in ferroelastic data storage. ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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The coexistence of threshold and memory switching characteristics of ALD HfO2 memristor synaptic arrays for energy-efficient neuromorphic computing.

Haider Abbas, Yawar Abbas, Gul Hassan, Andrey Sergeevich Sokolov, Yu-Rim Jeon, Boncheol Ku, Chi Jung Kang, Changhwan Choi,

The development of bioinspired electronic devices that can mimic the biological synapses is an essential step towards the development of efficient neuromorphic systems to simulate the functions of the human brain. Among various materials that can be utilized to attain electronic synapses, the existing semiconductor industry-compatible conventional materials are more ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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A minireview on doped carbon dots for photocatalytic and electrocatalytic applications.

Zhengting Zhang, Guiyun Yi, Peng Li, Xiuxiu Zhang, Haiyang Fan, Yulong Zhang, Xiaodong Wang, Chuanxiang Zhang,

To date, carbon dots (CDs) or carbon quantum dots (CQDs), considered as alternatives to conventional fluorescent materials such as organic dyes and semiconductor quantum dots (QDs), have drawn significant attention from relevant researchers due to their superior properties, including nontoxicity, biocompatibility, low cost and facile synthesis, and high photoluminescence. In ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Tailoring phase transformation strengthening and plasticity of nanostructured high entropy alloys.

Y F Zhao, X B Feng, J Y Zhang, Y Lu, S H Wu, Y Q Wang, K Wu, G Liu, J Sun,

Metastable high entropy alloys (HEAs) have attracted extensive attention due to their excellent combination of high strength and great plasticity. In this work, we utilize constraining effects to tailor phase transformation strengthening and plasticity of nanostructured HEA ([double bond, length as m-dash]FeCoCrNi) thin films prepared by the magnetron sputtering technique ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Characterising the size and shape of metallic nano-structures by their acoustic vibrations.

Rafael Fuentes-Domínguez, Shakila Naznin, Leonel Marques, Fernando Pérez-Cota, Richard J Smith, Matt Clark,

The characterisation of metallic nano-structures is of great importance as their optical properties are strongly dependent on their size and shape. Inaccurate size or shape characterisation can result in misleading measurements in applications such as bio-imaging and sensing. Characterisation techniques such as dynamic light scattering, electron microscopy or atomic force ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Tunable electrochromic behavior of titanium-based MXenes.

Geetha Valurouthu, Kathleen Maleski, Narendra Kurra, Meikang Han, Kanit Hantanasirisakul, Asia Sarycheva, Yury Gogotsi,

Two-dimensional transition metal carbides, nitrides and carbonitrides, popular by the name MXenes, are a promising class of materials as they exhibit intriguing optical, optoelectronic and electrochemical properties. Taking advantage of their metallic conductivity and hydrophilicity, titanium carbide MXenes (Ti3C2Tx and others) are used to fabricate solution processable transparent conducting electrodes ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Photovoltaic nanowires affect human lung cell proliferation under illumination conditions.

Therese B Olsson, Laura Abariute, Lukas Hrachowina, Enrique Barrigón, Diogo Volpati, Steven Limpert, Gaute Otnes, Magnus T Borgström, Christelle N Prinz,

Using light to interact with cells is a promising way to steer cell behavior with minimal perturbation. Besides optogenetics, photovoltaic nanostructures such as nanowires can be used to interact with cells using light as a switch. Photovoltaic nanowires have, for instance, been used to stimulate neurons. However, the effects of ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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AgPd nanoparticles for electrocatalytic CO2 reduction: bimetallic composition-dependent ligand and ensemble effects.

Meiyang Cui, Grayson Johnson, Zhiyong Zhang, Shuang Li, Sooyeon Hwang, Xu Zhang, Sen Zhang,

Monodisperse AgPd nanoparticles (NPs) were synthesized and studied as an efficient catalyst for electrocatalytic CO2 reduction by modulating bimetallic compositions. The mechanistic studies, based on density functional theory (DFT) calculations and environmental diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) analysis, revealed that the incorporation of Ag in AgPd NPs can effectively ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity.

Linqing Zhuo, Pengpeng Fan, Shuang Zhang, Xiaohe Liu, Xinyi Guo, Yu Zhang, Yuansong Zhan, Dongquan Li, Zhen Che, Wenguo Zhu, Huadan Zheng, Jieyuan Tang, Jun Zhang, Yongchun Zhong, Yunhan Luo, Jianhui Yu, Zhe Chen,

Carbon-based nanomaterials such as carbon nanotubes (CNTs) and graphene have great potential for high-performance all-carbon photodetectors due to their unique optical and electronic properties. Here, we assemble a hybrid CNT/graphene film prepared by depositing CNTs on a single layer graphene with a side-polished optical fiber to achieve a novel all-fiber ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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3D bioprinting of cell-laden electroconductive MXene nanocomposite bioinks.

Hadi Rastin, Bingyang Zhang, Arash Mazinani, Kamrul Hassan, Jingxiu Bi, Tran Thanh Tung, Dusan Losic,

MXenes, a new family of burgeoning two-dimensional (2D) transition metal carbides/nitrides, have been extensively explored in recent years owing to their outstanding properties such as a large specific surface area, high electrical conductivity, low toxicity, and biodegradability. Numerous efforts have been devoted to exploring MXenes for various biomedical applications such ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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Polyelectrolyte stiffness on gold nanorods mediates cell membrane damage.

Nurul 'Ain Azman, Laurent Bekale, Thanh Xuan Nguyen, James Chen Yong Kah,

Charge and surface chemistry of gold nanorods (AuNRs) are often considered the predictive factors for cell membrane damage. Unfortunately, extensive research on AuNR passivated with polyelectrolyte (PE) ligand shell (AuNR-PE) has hitherto left a vital knowledge gap between the mechanical stability of the ligand shell and the cytotoxicity of AuNR-PEs. ... Read more >>

Nanoscale (Nanoscale)
[2020, :]

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