Perspective Review
Emerging porous nanosheets: From fundamental synthesis to promising applications
Yun Fan, Jia Zhang, Yu Shen, Bing Zheng, Weina Zhang*, and Fengwei Huo*
Nanjing Tech University, China
Based on their different compositions and bonding modes, significant differences have emerged in the applications of metal-organic framework (MOF) and covalent organic framework (COF) nanosheets in various fields, despite of their shared similar properties. Hence, we summarize the recent progress of MOF and COF nanosheets by comparative analysis on their advantages and limitations in synthesis, properties, and applications.
1–28
Review Article
How defects influence the photoluminescence of TMDCs
Mengfan Zhou, Wenhui Wang, Junpeng Lu*, and Zhenhua Ni*
Southeast University, China
We provide a comprehensive review on the fundamental mechanisms of how defects influence the photoluminescence (PL) emission of two-dimensional (2D) transition metal dichalcogenide (TMDC), including radiative/nonradiative recombination kinetics and band structure modification.
29–39
Research Articles
Demonstration of biophoton-driven DNA replication via gold nanoparticle-distance modulated yield oscillation
Na Li1,2, Daoling Peng3, Xianjing Zhang1,2, Yousheng Shu4, Feng Zhang1,2,5,*, Lei Jiang6,7,8,*, and Bo Song1,*
1 University of Shanghai for Science and Technology, China
2 Guangzhou Medical University, China
3 South China Normal University, China
4 Fudan University, China
5 Inner Mongolia Agricultural University, China
6 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, China
7 University of Chinese Academy of Sciences, China
8 Beihang University, China
Hydrolysis of deoxynucleotide triphosphates (dNTPs) releases 34-THz biophotons to drive DNA replication.
40–45
Complex RNA–DNA hybrid nanoshapes from iterative mix-andmatch screening
Shi Chen, Zhiyuan Zhang, Eugene Alforque, and Thomas Hermann*
University of California, San Diego, USA
Ribonucleic acid (RNA)–deoxyribonucleic acid (DNA) hybrid nanoshapes that self-assemble from multiple different nucleic acid building modules provide versatile building blocks for complex materials with features at the sub-10 nm scale. Stable nanoshapes containing multiple different nucleic acid modules were identified by an iterative mix-and-match screening approach from combinations of RNA corner motifs and DNA connectors.
46–51
Fluorescent silicon nanoparticles-based nanotheranostic agents for rapid diagnosis and treatment of bacteria-induced keratitis
Lu Zhang, Xiaoyuan Ji, Yuanyuan Su*, Xia Zhai, Hua Xu, Bin Song, Airui Jiang, Daoxia Guo, and Yao He*
Soochow University, China
A kind of theranostic agents made of vancomycin (Van)-modified fluorescent silicon nanoparticles (SiNPs) enables rapid and non-invasive diagnosis and treatment of Gram-positive bacteria-induced keratitis in a simultaneous manner.
52–58
Metallo-aerogels derived from chitosan with encapsulated metal nanoparticles as robust, efficient and selective nanocatalysts towards reduction of nitroarenes
Yajing Shen1, Qingshu Zheng1, Jianhong Liu1, and Tao Tu1,2,3,*
1 Fudan University, China
2 Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, China
3 Zhengzhou University, China
Robust metallo-aerogels consisting of well encapsulated metal-nanoparticles (MNPs) by graphite shells were fabricated by pyrolysis of xerometallo-hydrogels derived from chitosan and earth-abundant metal salts (M = Fe, Co, Ni). The metallo-aerogels exhibited high activity and selectivity in the hydrogenation of nitroarenes to anilines with broad substrates scope, good functional group tolerance, and could be recycled for more than 30 runs without obvious loss of activity and selectivity.
59–65
Mechanistic insight into gold nanorod transformation in nanoscale confinement of ZIF-8
Cheongwon Bae1, Jaedeok Lee1, Lehan Yao2, Suhyeon Park1, Yeonju Lee1, Jieun Lee1, Qian Chen2, and Juyeong Kim1,*
1 Gyeongsang National University, Republic of Korea
2 University of Illinois at Urbana-Champaign, USA
A gold nanorod core encapsulated by a zeolitic imidazolate framework (ZIF) shows template-dependent behavior in its morphological transformation due to nanoscale confining environment. In the etching event, the nanorod core is spherically carved from its tips, which becomes much slower than in bulk. The regrowth on the spherically etched core inside the ZIF shell gives rise to formation of a raspberry-like branched nanostructure in contrast to the growth of an octahedral shape in bulk condition.
66–73
Supersaturated bridge-sulfur and vanadium co-doped MoS2 nanosheet arrays with enhanced sodium storage capability
Yuru Dong1, Zhengju Zhu1, Yanjie Hu1,*, Guanjie He2, Yue Sun1, Qilin Cheng1, Ivan P. Parkin2, and Hao Jiang1,*
1 East China University of Science & Technology, China
2 University College London, UK
The supersaturated bridge-sulfur and vanadium co-doped MoS2 nanosheet delivers ultrahigh sodium storage capacity and fast reaction kinetics.
74–80
A hierarchical heterostructure of CdS QDs confined on 3D ZnIn2S4 with boosted charge transfer for photocatalytic CO2 reduction
Zezhou Zhu1,2, Xiaoxia Li1, Yunteng Qu1, Fangyao Zhou1, Zhiyuan Wang1, Wenyu Wang1, Changming Zhao1, Huijuan Wang1, Liqiang Li1,2, Yagang Yao2,*, Qun Zhang1,*, and Yuen Wu1,*
1 University of Science and Technology of China, China
2 Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, China
The hierarchical ZnIn2S4-CdS heterostructure that involves zero-dimensional (0D) CdS quantum dots uniformly confined on three-dimensional (3D) ZnIn2S4 nanoflowers, which achieves an excellent catalytic performance of CO2 photoconversion under visible-light irradiation.
81–90
Boosting Zn-ion storage capability of self-standing Zn-doped Co3O4 nanowire array as advanced cathodes for high-performance wearable aqueous rechargeable Co//Zn batteries
Qiulong Li1,2,4, Qichong Zhang3, Zhengyu Zhou3, Wenbin Gong3, Chenglong Liu3, Yongbao Feng1, Guo Hong5, and Yagang Yao2,3,*
1 Nanjing Tech University, China
2 Nanjing University, China
3 Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences, China
4 National University of Singapore, Singapore
5 University of Macau, Macau, China
Density functional theory (DFT) calculations demonstrate that the substitution of Zn for Co3+ leads to an insulator-metal transition in the Zn-doped Co3O4. High-performance fiber-shaped aqueous rechargeable Co//Zn battery with 2.2 V-high voltage based on Zn-doped Co3O4 was demonstrated.
91–99
Superbroad-band actively tunable acoustic metamaterials driven from poly (ethylene terephthalate)/carbon nanotube nanocomposite membranes
Ying Li1,2, Wen Ning3, Qingyu Peng2,4, Minglong Yang2, Dongyi Lei1, Siyao Guo1, Peng Liu3,*, Kaili Jiang3, Xiaodong He2,4,*, and Yibin Li2,4,*
1 Qingdao University of Technology, China
2 Harbin Institute of Technology, China
3 Tsinghua University, China
4 Shenzhen STRONG Advanced Materials Institute Ltd. Corp, China
A superbroad-band actively tunable acoustic metamaterials consisting of a laminated poly (ethylene terephthalate)/carbon nanotube (PET/ CNT) nanocomposite membrane were proposed, which exhibits adjustable acoustic bandwidth of 419 Hz under low applied voltage of 60 V, resulting in great potential in noise reduction applications.
100–107
Coarse and fine-tuning of lasing transverse electromagnetic modes in coupled all-inorganic perovskite quantum dots
Youngsin Park1, Guanhua Ying2, Atanu Jana1, Vitaly Osokin2, Claudius C. Kocher2, Tristan Farrow3,2,*, Robert A. Taylor2,*, and Kwang S. Kim1,*
1 Ulsan National Institute of Science and Technologh, Republic of Korea
2 University of Oxford, UK
3 National University of Singapore, Singapore
We present transverse electromagnetic lasing modes from CsPbBr3 quantum dots with a long coherence time ~ 9.5 ps and a blueshift of the emission wavelength without heating the system. We demonstrate also how the wavelength of the modes can be controlled via two independent tuning-mechanisms including the excitation pump power and temperature.
108–113
Hybridized 1T/2H-MoS2/graphene fishnet tube for high-performance on-chip integrated micro-systems comprising supercapacitors and gas sensors
Chi Zhang, Jing Ning*, Boyu Wang, Haibin Guo, Xin Feng, Xue Shen, Yanqing Jia, Jianguo Dong, Dong Wang, Jincheng Zhang*, and Yue Hao
Xidian University, China
The hybrid three-dimensional stereo nanostructure, including MoS2 nanosheets and graphene fishnet tube (GFT), provides the K+ ions with a short diffusion pathway and more active sites, and the different phases of MoS2 play different roles in different devices of the multifunctional systems.
114–121
Highly active sites of low spin FeⅡN4 species: The identification and the ORR performance
Huizhu Cai1, Bingbing Chen1, Xiao Zhang1, Yuchen Deng2, Dequan Xiao3, Ding Ma2,*, and Chuan Shi1,*
1 Dalian University of Technology, China
2 Peking University, China
3 University of New Haven, USA
Single sites of FeN4 species were obtained by acid leaching of Fe2N/C sample. A linear correlation between kinetic current density and the content of low spin FeⅡN4 species was established, which identified the catalytic functions of low spin FeⅡN4 species as highly active sites for oxygen reduction reaction (ORR).
122–130
Vapor deposition of aluminium oxide into N-rich mesoporous carbon framework as a reversible sulfur host for lithium-sulfur battery cathode
Fei Sun1,*, Zhibin Qu1, Hua Wang1, Xiaoyan Liu2, Tong Pei1, Rui Han1, Jihui Gao1, Guangbo Zhao1, and Yunfeng Lu3,*
1 Harbin Institute of Technology, China
2 Shanghai Normal University, China
3 University of California, Los Angeles, USA
Amorphous Al2O3 homogenously decorated in nitrogen-rich mesoporous carbon framework (NMC-Al2O3) is synthesized to prevent polysulfide shuttling effect. Both experimental and density functional theory (DFT) calculations reveal that the implanted Al2O3 can greatly enhance the chemical adsorption interaction and catalytic conversion for lithium polysulfides and thereby effectively improve the utilizability, reversibility and stability of constructed sulfur cathode.
131–138
Improved Na storage and Coulombic efficiency in TiP2O7@C microflowers for sodium ion batteries
Jun Pan1, Nana Wang2, Lili Li1, Feng Zhang1, Zhenjie Cheng1, Yanlu Li1, Jian Yang1,*, and Yitai Qian1
1 Shandong University, China
2 University of Wollongong Innovation Campus, Australia
TiP2O7 as a promising Ti-based anode material, combines enhanced specific capacity, increased coulombic efficiency and low operation voltage together. These features can be associated with the underlying electrochemical reactions for Na storage, very different from the case of TiO2.
139–147
Highly active multivalent multielement catalysts derived from hierarchical porous TiNb2O7 nanospheres for the reversible hydrogen storage of MgH2
Lingchao Zhang1, Ke Wang1, Yongfeng Liu1,*, Xin Zhang1, Jianjiang Hu2, Mingxia Gao1, and Hongge Pan1
1 Zhejiang University, China
2 Yantai University, China
A multivalent multielement surrounding of catalysis was created in situ for hydrogen storage in MgH2 by using hierarchical porous TiNb2O7 as precursors, which enables hydrogen uptake from 25 °C under a hydrogen pressure of 50 bar.
148–156
Multiple radial phosphorus segregations in GaAsP core–shell nanowires
H. Aruni Fonseka1,*, Yunyan Zhang2, James A. Gott1, Richard Beanland1, Huiyun Liu2, and Ana M. Sanchez1
1 University of Warwick, UK
2 University College London, UK
Multiple radial segregation bands are observed in the vicinity of a single radius. A total of up to 18 segregation bands can form, as opposed to the six known before.
157–164
Light-responsive color switching of self-doped TiO2–x/WO3·0.33H2O hetero-nanoparticles for highly efficient rewritable paper
Jingmei Zhao, Luntao Liu, Yun Zhang, Zhenyu Feng, Feifei Zhao, and Wenshou Wang*
Shandong University, China
A seeded growth strategy was designed for the synthesis of TiO2−x/WO3·0.33H2O hetero-nanoparticles (HNPs), on which Ti3+ species are self-doped in TiO2–x NPs and Ti-O-W linkages are formed between TiO2–x and WO3·0.33H2O HNPs. The TiO2–x/WO3·0.33H2O HNPs exhibited excellent color switching properties and promising applications in ink-free, light-printable rewritable paper.
165–171
Enhancement of interfacial catalysis in a triphase reactor using oxygen nanocarriers
Lu Zhou1, Liping Chen1, Zhenyao Ding1, Dandan Wang1, Hao Xie1, Weihai Ni1, Weixiang Ye1, Xiqi Zhang1, Lei Jiang2,3,*, and Xinjian Feng1,*
1 Soochow University, China
2 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, China
3 University of Chinese Academy of Sciences, China
An efficient water-solid-oil triphase biocatalytic system using oxygen nanocarriers that consist of an oil core and a mesoporous silica shell architecture was demonstrated.
172–176
A novel approach towards molecular memory device in gate tunable structure of MoS2-graphene
Rahul Tripathi and Abha Misra*
Indian Institute of Science, India
Electrostatic field-controlled molecular response is observed in MoS2-graphene heterostructure with a thin bottom graphene layer. A molecular memory operation is achieved in MoS2-graphene heterostructure for an ultrasensitive molecular interaction leading to molecular memory device with ultrafast recovery.
177–184
Functionalized graphene oxide nanosheets with unique three-in-one properties for efficient and tunable antibacterial applications
Bo-Yao Lu, Guan-Yin Zhu, Chen-Hao Yu, Ge-Yun Chen, Chao-Liang Zhang, Xin Zeng, Qian-Ming Chen, and Qiang Peng*
Sichuan University, China
Three essential properties (positive charge, strong photothermal effect, and natural cutting effect) are integrated into amino-functionalized graphene oxide (AGO) which is synthesized by amino-functionalization of graphene oxide (GO). As such, AGO can be used for efficient and tunable antibacterial therapy.
185–190
CsPbBrxI3–x thin films with multiple ammonium ligands for low turn-on pure-red perovskite light-emitting diodes
Maowei Jiang, Zhanhao Hu, Luis K. Ono, and Yabing Qi*
Okinawa Institute of Science and Technology Graduate University (OIST), Japan
CsPbBrxI3–x thin films featuring nano-sized crystallites were prepared via incorporating multiple ammonium ligands in a one-step spin-coating route. The CsPbBrxI3–x light-emitting diode (LED), adopting a conventional device structure of indium-doped tin oxide (ITO)/ poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS)/CsPbBrxI3–x/[6,6]-phenyl C61 butyric acid methyl ester (PCBM)/bathocuproine (BCP)/Al, showed a pure-red color at 659 nm, low turn-on voltage (1.6 V), high brightness (2,859 cd·m−2), and high external quantum efficiency (8.94%).
191–197
The effect of the dopant’s reactivity for high-performance 2D MoS2 thin-film transistor
Hanleem Lee1, Sora Bak1,2, Joosung Kim1,2, and Hyoyoung Lee1,2,*
1 Institute for Basic Science (IBS), Republic of Korea
2 Sungkyunkwan University, Republic of Korea
To fabricate the reproducible electronic devices with high electronic properties, and optimization of the doping reaction condition for two-dimensional (2D) semiconductors is important. Herein, we examined the organic doping reaction on 2D semiconductors using four different dopants, and it showed the effective functionalization using mild reactive molecules only provided high Ion/Ioff and mobility.
198–204
Tumor-responsive copper-activated disulfiram for synergetic nanocatalytic tumor therapy
Hao Chen1, Xi Li1, Minfeng Huo3,*, Liying Wang4, Yu Chen2,3,*, Wei Chen1, and Bailiang Wang1,*
1 Wenzhou Medical University, China
2 Shanghai University, China
3 Shanghai Institute of Ceramics, Chinese Academy of Sciences, China
4 Tongji University, China
Disulfiram incorporated HKUST nanodrugs (DSF@HKUST) have been designed and served for biocompatible efficient synergetic tumor chemotherapy and nanocatalytic therapy. The tumor-responsive degradation of HKUST-framework enables the intratumoral copper supply and subsequent activation of DSF drug to form cytotoxic chemotherapeutic species Cu(DDTC)2, simultaneously triggering the Cu+-mediated Fenton-like reactions for highly actives hydroxyl radicals production. The in-situ generation of these toxic species synergistically contributes to satisfied nanocatalytic tumor therapy with high biocompatibility.
205–211
Sonodynamic therapy with immune modulatable two-dimensional coordination nanosheets for enhanced anti-tumor immunotherapy
Wenjun Zhu, Qian Chen*, Qiutong Jin, Yu Chao, Lele Sun, Xiao Han, Jun Xu, Longlong Tian, Jinglei Zhang, Teng Liu, and Zhuang Liu*
Soochow University, China
Two-dimensional (2D) coordination nanosheets composed of Zn2+ and tetrakis(4-carboxyphenyl) porphyrin (TCPP) are fabricated. Such 2D nanosheets show high loading capacity of oligodeoxynucleotides such as CpG, function as whole-tumor-cell vaccines to trigger tumor-specific immune responses. With the application of sonication, strengthened anti-tumor immune responses are achieved for highly effective cancer treatment.
212–221
ATP-responsive hollow nanocapsules for DOX/GOx delivery to enable tumor inhibition with suppressed P-glycoprotein
Huimin Zhu, Guodong Cao, Yike Fu, Chao Fang, Qiang Chu, Xiang Li*, Yulian Wu*, and Gaorong Han
Zhejiang University, China
Nanocapsules with fine hollow microstructure, which can effectively degrade in the presence of adenosine triphosphate (ATP), are synthesized for the delivery of doxorubicin (DOX) and glucose oxidase (GOx) to enable multi-model therapy with suppressed tumor multidrug resistance (MDR). Two mechanisms, production inhibition and consumption of intracellular ATP, are achieved in one therapeutic platform to tackle the challenges of P-gp suppression and anticancer drug efflux. Due to the successful construction of DOX/GOx/hollow ferric-tannic acid (HFe-TA) nanocapsules, the agitated glucose consumption, promoted reactive oxygen species (ROS) induction and enhanced drug accumulation occur intracellularly in a synergistic manner to enable considerable tumor inhibition both in vitro and in vivo.
222–231
Ultrathin flexible InGaZnO transistor for implementing multiple functions with a very small circuit footprint
Chaoqi Dai1,2, Peiqin Chen2, Shaocheng Qi2, Yongbin Hu2, Zhitang Song3,4,*, and Mingzhi Dai2,3,*
1 Kunming University of Science and Technology, China
2 Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, China
3 University of Chinese Academy of Sciences, China
4 Shanghai Microsystem and Information Technology Institute, Chinese Academy of Sciences, China
This article proposes a novel flexible transistor design that can implement logic gate, memory, and artificial synapse functions using a single IGZO (InGaZnO, indium-gallium-zinc-oxide) transistor. This design can accelerate the development of flexible electronics that require a higher level of device integration.
232–238
Breakdown of Raman selection rules by Frölich interaction in few-layer WS2
Qing-Hai Tan1, Yu-Jia Sun1, Xue-Lu Liu1, Kai-Xuan Xu1, Yuan-Fei Gao1,2, Shu-Liang Ren1, Ping-Heng Tan1,2, and Jun Zhang1,2,*
1 University of Chinese Academy of Sciences, China
2 Beijing Academy of Quantum Information Science, China
By using resonant Raman scattering technology, this work studies the breakdown of polarization Raman selection in few-layer WS2. A new Raman tensor determined by the intraband Fröhlich interaction between phonons and dark excitons dominates the polarized response of scattering signal (phonons).
239–244
Water-soluble hollow nanocrystals from self-assembly of AIEE-active Pt(II) metallomesogens
Cristián Cuerva1,*, Javier Fernández-Lodeiro1,2, Mercedes Cano3, José Luis Capelo-Martínez1,2, and Carlos Lodeiro1,2,*
1 NOVA University, Portugal
2 PROTEOMASS Scientific Society, Portugal
3 Ciudad Universitaria, Spain
We have demonstrated that luminescent Pt(II) metallomesogens can be well-dispersed in water despite their great hydrophobic nature, forming nanocapsules useful for entrapment of hydrophobic drugs.
245–254
Magnetic-programmable organohydrogels with reconfigurable network for mechanical homeostasis
Yingchao Yang, Qian Liu, Tianyi Zhao*, Yunfei Ru, Ruochen Fang, Yichao Xu, Jin Huang, and Mingjie Liu*
Beihang University, China
The organohydrogels with heterogeneous dynamic architecture exhibit magnetic-programmable mechanics resulting from the aligned chain-like assemblies of nanoparticles induced by magnetic field. The organohydrogel-based effector can realize mechanical homeostasis by regulating the modulus.
255–259
Oxygen-assisted direct growth of large-domain and high-quality graphene on glass targeting advanced optical filter applications
Bingzhi Liu1,2, Huihui Wang2, Wei Gu2, Le Zhou1, Zhaolong Chen1, Yufeng Nie2, Congwei Tan1, Haina Ci3, Nan Wei3, Lingzhi Cui1, Xuan Gao2, Jingyu Sun2,3,*, Yanfeng Zhang1,2,*, and Zhongfan Liu1,2,3,*
1 Peking University, China
2 Beijing Graphene Institute (BGI), China
3 Soochow University, China
The oxygen-assisted chemical vapor deposition (CVD) strategy allows the direct synthesis of 6-inch-scale graphene glass harvesting markedly increased graphene domain size (from 0.2 to 1.8 μm). As-produced graphene glass attains record high electrical conductivity and good transparency, readily serving as transparent electrodes for fabricating advanced optical filter devices.
260–267
Robust enhanced hydrogen production at acidic conditions over molybdenum oxides-stabilized ultrafine palladium electrocatalysts
Ji Sun1,2, Xian Zhang1, Meng Jin1,2, Qizhong Xiong1, Guozhong Wang1, Haimin Zhang1,*, and Huijun Zhao1,3,*
1 Institute of Solid State Physics, Chinese Academy of Sciences, China
2 University of Science and Technology of China, China
3 Griffith University, Australia
Employing a facile electrochemical reduction strategy, a self-supported MoOx-stabilized ultrafine palladium electrocatalyst on carbon cloth (MoOx-Pd/CC) was acquired to attain excellent catalytic efficiency for the electrochemical hydrogen evolution reaction (HER) in acidic condition.
268–274
Continuous mechanical tuning of plasmonic nanoassemblies for tunable and selective SERS platforms
Xiunan Yan1, Qing Chen1, Qun Song1, Ziyu Huo1, Ning Zhang2,*, and Mingming Ma1,*
1 University of Science and Technology of China, China
2 Hefei University, China
Plasmonic gold nanochains (Au NCs) are embedded in an elastic polyvinylpyrrolidone (PVP) film, which can be simultaneously and reversibly tuned by mechanical deformation of the PVP film. This plasmonic film can serve as a sensitive and selective surface-enhanced Raman scattering (SERS) platform for quick analysis of small molecule analytes in complex biological samples and food, without any pretreatment process.
275–284
3D confined self-assembling of QD within super-engineering block copolymers as biocompatible superparticles enabling stimulus responsive solid state fluorescence
Xiaohong He1, Kun Jia1,*, Robert Marks2, Yiguo Hu3, and Xiaobo Liu1
1 University of Electronic Science and Technology of China, China
2 Ben-Gurion University of the Negev, Israel
3 Sichuan University, China
Biocompatible superparticles showing unprecedented fluorescence stability in solution and stimulus responsive fluorescence emission in solid state are obtained via confinement self-assembly of quantum dots in super-engineering block copolymers.
285–294
Atomistic modeling and rational design of optothermal tweezers for targeted applications
Hongru Ding1, Pavana Siddhartha Kollipara1, Linhan Lin2,*, and Yuebing Zheng1,*
1 The University of Texas at Austin, USA
2 Tsinghua University, China
This work unravels the underlying mechanism of optothermal tweezers at the atomistic level: The trapping of tiny objects is dominated by the opto-thermoelectric effect arising from water polarization and charge separation. The atomistic view guides us on the development of new types of optothermal tweezers with enhanced performance.
295–303
Unveiling the role of Fe3O4 in polymer spin valve near Verwey transition
Shuaishuai Ding1,2, Yuan Tian2,3,*, Xiang Liu1, Ye Zou2, Huanli Dong2, Wenbo Mi1,*, and Wenping Hu1,2,4,*
1 Tianjin University, China
2 Institute of Chemistry, Chinese Academy of Sciences, China
3 Hunan University, China
4 Collaborative Innovation Center of Chemical Science and Engineering, China
Drastic enhancement of magnetoresistance (MR) ratios was achieved at Verwey transition point in polymer spin valve with vertical configuration of Fe3O4/P3HT/Co.
304–310
Flexible Au micro-array electrode with atomic-scale Au thin film for enhanced ethanol oxidation reaction
Xun Cao1,2, Dongdong Peng2, Cao Wu2,3, Yongmin He2, Chaojiang Li4, Bowei Zhang5, Changcun Han1, Junsheng Wu5,*, Zheng Liu2,*, and Yizhong Huang1,2,*
1 Hubei University of Technology, China
2 Nanyang Technological University, Singapore
3 Nanjing University of Aeronautics and Astronautics, China
4 Beijing Institute of Technology, China
5 University of Science and Technology Beijing, China
Atomic-scale three-dimensional (3D) nanostructures are directly visualised with a maximum depth of 6 atomic layers; in-situ observation unveils the growth of atomic-scale active sites in the form of twinning. Active site utilisation ratio is important to build double layers for efficient charge transfer.
311–319
Effect and mechanism of encapsulation on aging characteristics of quantum-dot light-emitting diodes
Zinan Chen, Qiang Su, Zhiyuan Qin, and Shuming Chen*
Southern University of Science and Technology, China
By developing a physical model and an analytical model, we identify that the positive aging of quantum-dot light-emitting diodes (QLEDs) is mainly attributed to the suppression of hole leakage current that is resulted from the passivation of ZnMgO defects. To fully take the advantage of positive aging, a new encapsulation method is proposed, which improved the device lifetime by 6.0 folds.
320–327
Adaptive nanopores: A bioinspired label-free approach for protein sequencing and identification
Andrea Spitaleri1,2, Denis Garoli1,3, Moritz Schütte4, Hans Lehrach4,5, Walter Rocchia1,*, and Francesco De Angelis1,*
1 Istituto Italiano di Tecnologia, Italy
2 IRCCS San Raffaele Scientific Institute, Italy
3 AB ANALITICA s.r.l., Italy
4 Alacris Theranostics GmbH, Germany
5 Max Planck Institute for Molecular Genetics, Germany
In this work, we introduce the concept of 「adaptive nanopore」 as the foundation for a novel class of protein sequencing devices. In the proposed approach the nanopore is realized by an engineered protein construct that adapts to the sequence of the translocating polypeptide due to the same molecular forces involved in bio-molecular recognition.
328–333