SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Zhang Yong) ;hsvcat:2"

Sökning: WFRF:(Zhang Yong) > Teknik

  • Resultat 1-10 av 142
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Zhang, Lixiu, et al. (författare)
  • Advances in the Application of Perovskite Materials
  • 2023
  • Ingår i: NANO-MICRO LETTERS. - : SHANGHAI JIAO TONG UNIV PRESS. - 2311-6706. ; 15:1
  • Forskningsöversikt (refereegranskat)abstract
    • Nowadays, the soar of photovoltaic performance of perovskite solar cells has set off a fever in the study of metal halide perovskite materials. The excellent optoelectronic properties and defect tolerance feature allow metal halide perovskite to be employed in a wide variety of applications. This article provides a holistic review over the current progress and future prospects of metal halide perovskite materials in representative promising applications, including traditional optoelectronic devices (solar cells, light-emitting diodes, photodetectors, lasers), and cutting-edge technologies in terms of neuromorphic devices (artificial synapses and memristors) and pressure-induced emission. This review highlights the fundamentals, the current progress and the remaining challenges for each application, aiming to provide a comprehensive overview of the development status and a navigation of future research for metal halide perovskite materials and devices.
  •  
2.
  • Ning, Yuping, et al. (författare)
  • Optical simulation and preparation of novel Mo/ZrSiN/ZrSiON/SiO2 solar selective absorbing coating
  • 2017
  • Ingår i: Solar Energy Materials and Solar Cells. - : Elsevier BV. - 0927-0248 .- 1879-3398. ; 167, s. 178-183
  • Tidskriftsartikel (refereegranskat)abstract
    • A novel Mo/ZrSiN/ZrSiON/SiO2 solar selective absorbing coating has been investigated, which was prepared by magnetron sputtering on stainless steel substrate. A high solar absorptance of 0.94 and a low thermal emittance of 0.06 at 25 degrees C were achieved. By proportionally decreasing the thicknesses of the ZrSiN, ZrSiON and SiO2 layers, the thermal emittance at 500 degrees C was decreased significantly from 0.19 to 0.12 (Delta epsilon = 0.07) while keeping the solar absorptance unchanged. The coating also showed high thermal stability at 500 degrees C in vacuum, implying that it is a promising candidate for high temperature concentrated solar power (CSP) applications.
  •  
3.
  • Yang, Fei, et al. (författare)
  • High-Performance Electrothermal Film Based on Laser-Induced Graphene
  • 2022
  • Ingår i: Advanced Engineering Materials. - : Wiley. - 1527-2648 .- 1438-1656. ; 24:11
  • Tidskriftsartikel (refereegranskat)abstract
    • Herein, flexible and robust heaters are proposed based on laser-induced graphene (LIG) fabricated photothermally on polyimide (PI) substrates. The heaters are precisely defined by a computer numerical control (CNC) platform-driven laser diode with a one-step process. The electrothermal performance of the heaters can be adjusted by tuning the laser driving speed in a certain range under a given input power. The fabricated heater shows a high saturation temperature (270 °C), the fast response time (10 s), and satisfactory convective heat-transfer coefficient (42 W m−2°C−1). Simultaneously, the developed heaters demonstrate excellent flexibility, robust adhesion, and good long-time stability. The experimental results pave the way for high-performance, environmentally friendly, robust, and flexible heaters.
  •  
4.
  • Zhang, Yong, 1982, et al. (författare)
  • Transparent heaters based on CVD grown few-layer graphene
  • 2022
  • Ingår i: Journal of Materials Science: Materials in Electronics. - : Springer Science and Business Media LLC. - 1573-482X .- 0957-4522. ; 33:7, s. 3586-3594
  • Tidskriftsartikel (refereegranskat)abstract
    • The outstanding thermal and optical properties of graphene make it tremendously interesting as heating elements. In this work, we demonstrate few-layer graphene as heating elements on glass substrate by chemical vapor deposition (CVD) method combined with a layer-by-layer transfer process. The electrothermal performance was studied in terms of applied voltage, heating/cooling rate and input power density. The results show that a three-layer graphene film heater can reach an equilibrium temperature up to 102 °C and a maximum heating rate of 1.8 °C/s when 60 V voltage was applied. Simulations were further performed to rationalize the experimental results, in which the effect of heat transfer coefficient, electric conductivity, and the effective stress distribution was discussed. It was found that the adhesion between graphene and substrate is very important for the heat performance, especially at high temperatures. Our results indicate that graphene-based films are promising candidate materials for the next generation of transparent heating elements.
  •  
5.
  • Zhang, Hanzhu, 1991- (författare)
  • High-entropy boron-carbide and its composites
  • 2020
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • High-entropy alloy (HEA) is a multicomponent alloy material that contains five or more principal elements in equi- or near equi-atomic ratios. The entropy stabilisation leads to the formation of a crystalline solid solution accommodating the principal elements. The HEA solid solution has characteristic features such as lattice distortion, sluggish diffusion and cocktail effect that contribute to the superior properties of HEA including high strength, high hardness, excellent thermal and chemical stability, etc. The concept of HEA has been extended to ceramic materials to process high-entropy ceramic (HEC) that consists of multiple ceramic compounds such as metallic oxides, nitrides or carbides. The HECs have shown entropy stabilisation and formed single-phase ceramic solid solutions. However, the formation mechanism of high-entropic phase in HECs remains unclear and unpredictable. Generally, in order to maximise the probability of forming a high-entropy solid solution in a ceramic system, ceramic compounds with least difference in the crystal structure, preferably with only one anionic constituent element, are favoured when designing HECs, which limits the potential of discovering and developing new HECs. In this project, a multicomponent ceramic system containing six ultra-high temperature ceramics (UHTCs), B4C, HfC, Mo2C, TaC, TiC and SiC, was used to investigate the formation of high-entropy ceramics, UHTC composites, as well as the microstructure evolution, properties and high temperature applications. A ceramic composite composed of SiC and a high-entropy boron-carbide with hexagonal crystal structure was successfully processed from the carbide system in spite of the difference in the crystal structures of precursors (face-centred cubic, hexagonal and rhombohedral). The hexagonal HEC solid solution exhibited a unique AlB2 structure with alternating layers of metal and non-metal C/B atoms according to the experimental and simulation investigations. The HEC/SiC composite showed superior mechanical properties such as ultra-high hardness, excellent wear and oxidation resistance. The addition of B4C was discovered to be the key factor in the formation of the hexagonal high-entropy boron-carbide solid solution, while the final phase composition was tailored by utilising precursors of different particle size. Additionally, SiC as the reinforcement component in the HEC/SiC composite was used to tailor the microstructure, phase evolution and mechanical properties of the high-entropy boron-carbide composite. Higher content of SiC resulted in enhanced mechanical properties such as hardness and fracture toughness, as well as promoted the formation of the hexagonal high-entropy boron-carbide solid solution. To extend the investigation on the high-entropy boron-carbide composite to application, B4C, HfC, Mo2C, TaC and TiC were consolidated into a target for magnetron sputtering. The target was used to deposit oxidation-resistant high-entropy coatings using magnetron sputtering on carbon-carbon composites. The coatings showed superior mechanical performance and high temperature oxidation resistance at 2000 °C on carbon-carbon composite, suggesting potential applications of high-entropy boron-carbide ceramics as a protective coating material against oxidation at elevated temperature. This work pointed out the possibilities of synthesising high-performance HECs with superior properties from components with vast elemental and structure diversity, and thereby advanced the design criteria of HECs and provided more potential research directions for the new high-performance ceramic materials.
  •  
6.
  • Liu, Hao, et al. (författare)
  • Thermally Conductive Graphene Film/Indium/Aluminum Laminated Composite by Vacuum Assisted Hot-pressing
  • 2020
  • Ingår i: 2020 21ST INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY (ICEPT). - 9781728168265
  • Konferensbidrag (refereegranskat)abstract
    • In order to meet the ever more demanding requirements of modern thermal management with the increasing high power density, an easy-fabricated laminated graphene film/indium/aluminum (GF/In/Al) composite was developed. The GF was fabricated through assemble graphene oxide (GO) sheets in a layer-by-layer structure and then subjected to graphitization process at high temperature as well as press forming process. The fabricated GF exhibits ultrahigh in-plane thermal conductivity together with good tensile strength. The GF/In/Al laminated composite was fabricated by hot-pressing indium coated GF and Al layers in vacuum environment. The indium layer was easily coated onto the GF due to its low melting point along with good flowing property. The thermal resistance measurements show that the indium bonding possess greater preponderance of reducing contact resistance than without bonding material and thermal conductive adhesive (TCA) bonding, because indium layer could fill the gap between GF and Al layers, and provide more stable connection. The results show that the obtained laminated composite could be potentially used in the thermal management of high power systems.
  •  
7.
  • Lu, Pei, et al. (författare)
  • Thermal Conduction of Fiber-Reinforced Polymer under Loading
  • 2021
  • Ingår i: 2021 23rd European Microelectronics and Packaging Conference and Exhibition, EMPC 2021.
  • Konferensbidrag (refereegranskat)abstract
    • Thermal performance of an epoxy resin reinforced by carbon fibers is studied by numerical simulation method. Various carbon fiber structures are taken into consideration and the effective thermal conductivity of the composite carbon fiber waved structure is obtained. The influences of the number, size, shape, spacing and arrangement of the carbon fibers on the thermal conduction of the composites are analyzed. The deformation of the composite under mechanical loading and the corresponding the thermal conductivity of the carbon fiber-reinforced epoxy resin are also investigated.
  •  
8.
  • Yin, Hang, et al. (författare)
  • Analysis of heat dissipation characteristics of three-dimensional graphene-carbon nanotube composite structures
  • 2020
  • Ingår i: 2020 21ST INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY (ICEPT). - 9781728168265
  • Konferensbidrag (refereegranskat)abstract
    • With the rapid development of electronic materials and technologies, the working frequencies of electronic components and devices have been greatly improved and the volume of electronic products has been shrinking. The integration density has increased significantly, which puts forward higher requirements for thermal management. One of the keys to the heat dissipation of electronic components is to transfer the heat rapidly to the radiator through the heat conducting medium. Therefore, the development of high conductive materials has become a research hotspot of high-density integrated devices and systems. Due to their excellent heat transfer properties, carbon nanomaterials such as carbon nanotube and graphene have attracted extensive attention. The thermal conductivities of carbon nanotube and graphene have obvious anisotropy, which limited their applications to some extent. In this paper, three-dimensional composite structures composed of graphene sheets and carbon nanotubes are considered. The heat transfer processes are simulated by molecular dynamics method and the heat transfer characteristics of van der Waals interaction and chemical bond structures are analyzed. The effects of heat flow and nanotube layout on the thermal properties of three-dimensional composite structures are discussed.
  •  
9.
  • Zhang, Yong, 1982, et al. (författare)
  • Improved Thermal Properties of Three-Dimensional Graphene Network Filled Polymer Composites
  • 2022
  • Ingår i: Journal of Electronic Materials. - : Springer Science and Business Media LLC. - 1543-186X .- 0361-5235. ; 51:1, s. 420-425
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper presents the improved thermal property of three-dimensional (3D) graphene network modified polydimethylsiloxane (PDMS) composites. It shows that with a 2 wt.% loading of graphene foams (GF), the thermal conductivity of GF/PDMS composite was successfully increased from 0.19 W/mK to 0.42 W/mK, which is 2.2 times higher than that of neat PDMS. However, if GF was transformed into graphene sheets (GS) by sonication, the thermal conductivity of GS/PDMS was decreased to 0.28 W/mK. The remarkable improvement of the thermal properties is attributed to the 3D interconnected graphene network in GF, which form continuous heat transfer networks. Furthermore, the finite element analysis was conducted to evaluate the effect of GFs in composites, where some parameters such as thickness and thermal conductivity were analyzed and discussed. Our results indicate that the continuous 3D GFs holds great potential as fillers to improve the thermal property of polymer materials.
  •  
10.
  • Zhang, Yong, 1982, et al. (författare)
  • Properties of Undoped Few-Layer Graphene-Based Transparent Heaters
  • 2020
  • Ingår i: Materials. - : MDPI AG. - 1996-1944. ; 13:1
  • Tidskriftsartikel (refereegranskat)abstract
    • In many applications like sensors, displays, and defoggers, there is a need for transparent and efficient heater elements produced at low cost. For this reason, we evaluated the performance of graphene-based heaters with from one to five layers of graphene on flexible and transparent polyethylene terephthalate (PET) substrates in terms of their electrothermal properties like heating/cooling rates and steady-state temperatures as a function of the input power density. We found that the heating/cooling rates followed an exponential time dependence with a time constant of just below 6 s for monolayer heaters. From the relationship between the steady-state temperatures and the input power density, a convective heat-transfer coefficient of 60 W·m−2·°C−1 was found, indicating a performance much better than that of many other types of heaters like metal thin-film-based heaters and carbon nanotube-based heaters.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 142
Typ av publikation
tidskriftsartikel (100)
konferensbidrag (32)
forskningsöversikt (6)
doktorsavhandling (2)
annan publikation (1)
bokkapitel (1)
visa fler...
visa färre...
Typ av innehåll
refereegranskat (137)
övrigt vetenskapligt/konstnärligt (5)
Författare/redaktör
Wang, N. (16)
Jones, G. (15)
Price, D. (15)
Spagnolo, S. (15)
Walker, R. (15)
Clark, M. (15)
visa fler...
Robinson, S. (15)
Zhang, W. (15)
West, A. (15)
Smith, P. (15)
Morris, J. (15)
Wood, R (15)
Bowden, M. (15)
Rodrigues, P (15)
Young, R. (15)
Duran, I (15)
Lopez, J. M. (15)
Thomas, J. (15)
Hjalmarsson, A. (15)
Belli, F. (15)
Kaufman, M (15)
Airila, M (15)
Albanese, R (15)
Alper, B (15)
Ambrosino, G (15)
Ariola, M (15)
Ash, A (15)
Avotina, L (15)
Baciero, A (15)
Balboa, I (15)
Balshaw, N (15)
Barnsley, R (15)
Baruzzo, M (15)
Batistoni, P (15)
Baylor, L (15)
Bekris, N (15)
Bieg, B (15)
Bilkova, P (15)
Boboc, A (15)
Bolshakova, I (15)
Bolzonella, T (15)
Braic, V (15)
Brett, A (15)
Brezinsek, S (15)
Brix, M (15)
Buratti, P (15)
Cardinali, A (15)
Carman, P (15)
Carraro, L (15)
Carvalho, I (15)
visa färre...
Lärosäte
Chalmers tekniska högskola (61)
Kungliga Tekniska Högskolan (53)
Lunds universitet (16)
Uppsala universitet (11)
Linköpings universitet (8)
Luleå tekniska universitet (5)
visa fler...
Högskolan Dalarna (4)
Stockholms universitet (2)
Mittuniversitetet (2)
Blekinge Tekniska Högskola (2)
Umeå universitet (1)
Högskolan i Gävle (1)
Mälardalens universitet (1)
Gymnastik- och idrottshögskolan (1)
Linnéuniversitetet (1)
Sveriges Lantbruksuniversitet (1)
visa färre...
Språk
Engelska (141)
Kinesiska (1)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (45)
Medicin och hälsovetenskap (2)
Samhällsvetenskap (2)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy