A5108019768- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Transition Metal Oxide Nanomaterials
- Perovskite Materials and Applications
- Luminescence and Fluorescent Materials
- Metal Forming Simulation Techniques
- Photochromic and Fluorescence Chemistry
- Aluminum Alloys Composites Properties
- Molecular Junctions and Nanostructures
- Advanced battery technologies research
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and Properties of Aromatic Compounds
- Quantum Information and Cryptography
- Advanced Mathematical Theories and Applications
- Metallurgy and Material Forming
- Statistical Mechanics and Entropy
- Advanced machining processes and optimization
- Liquid Crystal Research Advancements
- Advanced Surface Polishing Techniques
- Porphyrin and Phthalocyanine Chemistry
- Molecular Sensors and Ion Detection
- Environmental Sustainability and Technology
- Thermal Expansion and Ionic Conductivity
- Algebraic and Geometric Analysis
- Nanopore and Nanochannel Transport Studies
South China University of Technology
2008-2022
Central South University
2020
The study of topological states in electric circuits is developing rapidly recently and forming the field topoelectrical circuits. As both loss gain can be easily introduced tuned circuits, it permits flexible accurate fabrications non-Hermitian systems. Loss generally considered negative as weakens electrical signals. However, we show here that a second-order phase realized by taking advantage loss. We observe gapped edge in-gap corner experiment. Our system provides readily accessible...
This study takes the ceramics industry as its object to improve production efficiency, reduce resource waste, and environmental pollution. It explores application of intelligent manufacturing technology in industry. The is a significant part China’s traditional However, it has low causes serious severe In era Industry 4.0, become meaningful way address these issues. paper uses combination literature reviews, case studies, other methods evaluate analyse technologies’ actual effects on...
The preparation and electrochromism of flexible electrochromic devices with fast switching bistability based on a transparent solid-state electrolyte.
Abstract In this study, a series of organic conjugated oligomers containing 3,4‐ethylenedioxythiophene (EDOT) and aromatic groups are synthesized, which as follows: 2,5‐di(methyl benzoate)‐3,4‐ethylenedioxy‐thiophene (1EDOT‐2B‐COOCH 3 ), 5,5′‐di(methyl benzoate)‐2,2′‐bi(3,4‐ethylenedioxythiophene) (2EDOT‐2B‐COOCH 5,5″‐di(methyl benzoate)‐2,2′:5′,2″‐ter(3,4‐ethylenedioxythiophene) (3EDOT‐2B‐COOCH 5,5″′‐di(methyl benzoate)‐2,2′:5′,2″: 5″,2″′‐quater(3,4‐ethylenedioxythiophene) (4EDOT‐2B‐COOCH...
For the purpose of developing organic photovoltaic devices with good performance characteristics, The authors have fabricated two cells using 5-vinyl-2,2′:5′,2″:5″,2‴-quarterthiophene (V4T), 5-vinyl-2′:5′,2″:5″,2‴:5‴,2″″-quinquethiophene (V5T) and 3,4,9,10-perylenetertracarboxylic dianhydride (PTCDA). indium tin oxide (ITO)/V4T/PTCDA/Al cell has an open circuit voltage (Voc) 2.07V a photoelectric conversion efficiency 2.32%. ITO/V5T/PTCDA/Al Voc 1.87V 2.67%. higher (1.87–2.07V). It is...
Every year an enormous amount of metal scraps are produced from machining, causing waste and pollution.The existing recycling methods, such as melting solid state could not solve the problem cumbersome processes high costs, while in this study, a novel chips process, namely Forming Extrusion Cutting (FEC) was provided.It turn irregular into grooved strips with industrial value during cutting, resulting advantages efficiency, low costs flexibility.In FEC deformation studied through finite...
A finite element model is presented to simulate chip breaking when orthogonal turning medium carbon steel with a grooved cutting tool used.The formation, breaking, force, stress, strain and temperature are simulated by the thermo-elastic-plastic method, using commercial software.The process from initial steady-state of then periodic fractures machined chip, incrementally advancing tool.Normalized Cockcroft & Latham's criterion employed predict effect tensile stress on fracture.The force...
To develop novel organic electrochromic materials, the star-shaped conjugated oligomers 1,3,5-tri[5′,2″-(3″,4″-ethylenedioxythineyl)-2′-thienyl]-4-(3′,4′-ethylenedioxythineyl) benzene (3TB-4EDOT) and 2,4,6-tri(2′-thienyl)-1,3,5-triazine (3TT) are synthesized. Two devices fabricated using 3TB-4EDOT or 3TT as an active layer, device structures indium tin oxide (ITO)/3TB-4EDOT (or 3TT)/electrolyte solution/Pt ITO/3TB- 4EDOT 3TT)/conducting gel/ITO. The properties of studied. solid films show...
In the present study, ultrafine grained (UFG) Al alloy chips with average grain sizes of ∼200 nm were successfully prepared by large strain extrusion machining (LSEM) process using a combined cutting tool rake angle 10° and chip compression ratio 1.0. The tests showed that Vickers hardness UFG is significantly improved due to size reduction. To understand effect heat on microstructure mechanical properties, subjected treatment at different temperatures annealing time durations. When annealed...
Abstract For the purpose of developing novel photovoltaic materials and organic devices with good performance characteristics, 5-cyano-2,2′:5′,2″-terthiophene (3T-CN) 5-cyano-2,2′:5′,2″:5″,2″′-tetrathiophene (4T-CN) were synthesized. The 3T-CN 4T-CN donor–acceptor oligothiophene derivatives possessing mesogenic properties. properties studied. rigid flexible fabricated using 3T-CN, 4T-CN, 3,4,9,10-perylenetertracarboxylic dianhydride (PTCDA). results showed that -CN group played an important...
Abstract In order to develop novel electrochromic materials, 5,5′′‐dicyano‐2,2′:5′,2′′‐terthiophene (DCN3T), 5,5′′′‐dicyano‐2,2′:5′,2′′:5′′,2′′′‐tetrathiophene (DCN4T), 5,5′′′‐dimethoxy‐2,2′:5′,2′′:5′′,2′′′‐tetrathiophene (DMO4T) and 4,4′′‐bicarboxyl‐5,5′′‐bipropyl‐2,2′:5′,2′′‐terthiophene (BP3T‐DCOOH) were synthesized, their properties studied. It was found that DCN3T, DCN4T, DMO4T BP3T‐DCOOH as solid films showed reversible, clear color changes on electrochemical doping dedoping.
The paper reports an advanced finite element analysis code for the investigation of cutting process rectangular groove.Three different restricted contact tools (RC tools) with rectangular, trapezoidal and double-trapezoidal shapes were employed in this study.The force, feed force rake face temperature distribution during analysed.The simulation results show that asymmetric tool-chip shape causes chip to break more easily than symmetric tools.The RC tool shows significant reductions both (6~8...
Abstract The photophysical and electrochemical properties of a family oligothiophene derivatives in solution were studied. It was found that the cyano vinyl group could increase fluorescence yield solution, while formyl carboxyl decrease energy gap. With increasing chain length thiophene ring, oxidation potential be decreased.
Abstract To develop novel oligothiophene‐based liquid crystals involving hydrogen bonding, new terthiophene derivatives containing a stearylamide group, N,N′‐distearyl‐5,5″‐dicyano‐2,2′∶5′,2″‐terthiophene‐4,4″‐dicarboxamide (DNC18DCN 3T) and N,N′‐distearyl‐5,5′‐dipropyl‐2,2′∶5′,2′‐terthiophene‐4,4″‐dicarboxamide (DNC18 DP3T), were designed synthesized, their thermal behavior examined. Although DNC18DP3T did not exhibit crystallinity, DNC18DCN3T was found to form smectic A phase.
Two novel porphyrin derivatives, 5,10,15,20-tetra(4-(N-octane-carboxamide)phenyl)porphyrin (4NC8-TPP) and 5,10,15,20-tetra(4-(N-stearyl-carboxamide)phenyl)porphyrin (4NC18-TPP), were synthesized. Their molecular structures characterized by means of time-of-flight mass spectrometer (TOF-MS), nuclear magnetic resonance (NMR), infrared spectra (IR). The thermal behavior morphologies 4NC8-TPP 4NC18-TPP examined gravity (TG), differential scanning calorimetry (DSC), x-ray diffraction (XRD),...