scholarly journals Achieving Highly Anisotropic Three-Dimensional, Lightweight, and Versatile Conductive Wood-Graphene Composite

2021 ◽  
Author(s):  
Li Wang ◽  
Xiao Tao Zhang ◽  
Xi Ming Wang ◽  
Zhang Jing Chen ◽  
Yu Kun Ren ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Three Dimensional ◽  
Volume Resistivity ◽  
Microscopic Level ◽  
Environmentally Benign ◽  
Porous Network ◽  
Anisotropic Conductivity ◽  
New Era ◽  
Graphene Composite ◽  
Monolithic Structure

Abstract Functionality of wood has to evolve with time to adapt to the emerging needs in society. In this work, endowing electrical conductivity to the insulating wood by adding graphene into the wood matrix to form a conductive wood-graphene composite (conductive wood) via a facile and environmentally benign fabrication technique. The rationale of fabricating conductive wood is of two folds: (1) The high suitability of wood as a renewable matrix due to its porous network and mechanically robust monolithic structure. (2) The need to explore reasonable strategy to adequately translate the properties of graphene from microscopic level to macroscopic level. The conductive wood is able to preserve both the natural features of wood (to function as mechanical scaffold) and the conductivity of graphene. An outstanding electrical conductivity (volume resistivity of 36.7 Ω·cm) is achieved for the conductive wood, while it can maintain a low bulk density of 0.44 g cm-1. More significantly, the conductive wood demonstrates a highly three-dimensional anisotropic conductivity that makes it a highly versatile conductor in various applications. Hence, this lightweight conductive wood may contribute towards a great electronic revolution and as an encouraging strategy to repurpose the function of wood in this new era.

THREE DIMENSIONAL FEM SIMULATION OF TITANIUM HOLLOW MONOLITHIC STRUCTURE PROCESS BASED ON VISCO--PLASTIC CONSTITUTIVE

2010 ◽  
Vol 46 (4) ◽  
pp. 396-403
Author(s):  
Bing ZHAO ◽  
Zhiqiang LI ◽  
Xiuquan HAN ◽  
Jinhua LIAO ◽  
Hongliang HOU ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Fem Simulation ◽  
Monolithic Structure

scholarly journals The New Era of Three-Dimensional Histoarchitecture of the Human Endometrium

2021 ◽  
Vol 11 (8) ◽  
pp. 713
Author(s):  
Manako Yamaguchi ◽  
Kosuke Yoshihara ◽  
Nozomi Yachida ◽  
Kazuaki Suda ◽  
Ryo Tamura ◽  
...  
Keyword(s):  
3D Imaging ◽  
Relevant Literature ◽  
3D Structure ◽  
Three Dimensional ◽  
Human Endometrium ◽  
Tissue Structure ◽  
New Era ◽  
Whole Mount ◽  
Uterine Glands

The histology of the endometrium has traditionally been established by observation of two-dimensional (2D) pathological sections. However, because human endometrial glands exhibit coiling and branching morphology, it is extremely difficult to obtain an entire image of the glands by 2D observation. In recent years, the development of three-dimensional (3D) reconstruction of serial pathological sections by computer and whole-mount imaging technology using tissue clearing methods with high-resolution fluorescence microscopy has enabled us to observe the 3D histoarchitecture of tissues. As a result, 3D imaging has revealed that human endometrial glands form a plexus network in the basalis, similar to the rhizome of grass, whereas mouse uterine glands are single branched tubular glands. This review summarizes the relevant literature on the 3D structure of mouse and human endometrium and discusses the significance of the rhizome structure in the human endometrium and the expected role of understanding the 3D tissue structure in future applications to systems biology.

Overcoming the supercooling of hydrated salts: three‐dimensional graphene composite PCMs

2018 ◽  
Vol 13 (6) ◽  
pp. 849-852 ◽  
Author(s):  
Ya Wang ◽  
Liu Cao ◽  
Dong Zhang
Keyword(s):  
Three Dimensional ◽  
Graphene Composite

scholarly journals Three-Dimensional Porous Network Electrodes with Cu(OH)2 Nanosheet/Ni3S2 Nanowire 2D/1D Heterostructures for Remarkably Cycle-Stable Supercapacitors

ACS Omega ◽  
2021 ◽  
Author(s):  
Jiansen Wang ◽  
Libing Hu ◽  
Xiaoya Zhou ◽  
Sheng Zhang ◽  
Qingshan Qiao ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Porous Network

Exceptionally high thermal and electrical conductivity of three-dimensional graphene-foam-based polymer composites

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 22364-22369 ◽  
Author(s):  
Zhiduo Liu ◽  
Dianyu Shen ◽  
Jinhong Yu ◽  
Wen Dai ◽  
Chaoyang Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Polymer Composites ◽  
Epoxy Matrix ◽  
Three Dimensional ◽  
Neat Epoxy ◽  
Graphene Foam

Three dimensional graphene foam incorporated into epoxy matrix greatly enhance its thermal conductivity (up to 1.52 W mK−1) at low graphene foam loading (5.0 wt%), over an eight-fold enhancement in comparison with that of neat epoxy.

PLAYING IN THE FRONTIERS OF THE WOODWARD-HOFFMANN RULES

2021 ◽  
Author(s):  
Carlos Silva López ◽  
Keyword(s):  
Organic Synthesis ◽  
Microscopic Level ◽  
Pericyclic Reactions ◽  
Computational Tools ◽  
New Era ◽  
Eye Opening ◽  
Degree Of Control ◽  
Chiral Centers ◽  
High Degree

Pericyclic reactions are known for their exquisite selectivity and, in many cases, the formation of multiple chiral centers with a high degree of control. With the advent of accurate computational tools, this control was translated into predictability, and the design and exploitation of this set of reactions opened a new era in organic synthesis. Suddenly, highly complex and profusely decorated polycyclic structures were accessible in relatively short reaction sequences. Out interest in exploring the limits of application of the rules that govern these reactions with ironfist led us to discover a range of eye opening post-transitional effects that are key to ultimately understand reactivity at a microscopic level.

Multi-interfaced graphene aerogel/polydimethylsiloxane metacomposites with tunable electrical conductivity for enhanced electromagnetic interference shielding

2020 ◽  
Vol 8 (34) ◽  
pp. 11748-11759 ◽  
Author(s):  
Jingnan Ni ◽  
Ruoyu Zhan ◽  
Jun Qiu ◽  
Jincheng Fan ◽  
Binbin Dong ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Three Dimensional ◽  
Interface Structure ◽  
Negative Permittivity ◽  
Electromagnetic Interference Shielding ◽  
Graphene Aerogel

Three-dimensional graphene aerogel/polydimethylsiloxane metacomposites with an integral multi-interface structure possess adjustable negative permittivity, excellent microwave absorption and electromagnetic interference shielding.

Retracted Article: 3D printed highly flexible strain sensor based on TPU–graphene composite for feedback from high speed robotic applications

2019 ◽  
Vol 7 (16) ◽  
pp. 4692-4701 ◽  
Author(s):  
Jahan Zeb Gul ◽  
Memoon Sajid ◽  
Kyung Hyun Choi
Keyword(s):  
High Speed ◽  
Thermoplastic Polyurethane ◽  
Three Dimensional ◽  
Strain Sensor ◽  
Graphene Composite ◽  
Retracted Article ◽  
3D Printed ◽  
Resistive Type ◽  
Flexible Strain Sensor ◽  
Robotic Applications

A novel, highly flexible and electrically resistive-type strain sensor with a special three-dimensional conductive network was 3D printed using a composite of conductive graphene pellets and flexible thermoplastic polyurethane (TPU) pellets.

Rapid manufacturing of copper-graphene composites using a novel rapid tooling technique

2020 ◽  
Vol 26 (4) ◽  
pp. 765-776 ◽  
Author(s):  
Gurminder Singh ◽  
Pulak Mohan Pandey
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Wear Rate ◽  
Coefficient Of Friction ◽  
Rate Coefficient ◽  
Three Dimensional ◽  
Rapid Tooling ◽  
Content Type ◽  
Three Dimensional Printing ◽  
Dimensional Printing

Purpose The purpose of this study is to study the mechanical, tribological and electrical properties of the copper-graphene (Cu-Gn) composites fabricated by a novel rapid tooling technique consist of three-dimensional printing and ultrasonic-assisted pressureless sintering (UAPS). Design/methodology/approach Four different Cu-Gn compositions with 0.25, 0.5, 1 and 1.5 per cent of graphene were fabricated using an amalgamation of three-dimensional printing and UAPS. The polymer 3d printed parts were used to prepare mould cavity and later the UAPS process was used to sinter Cu-Gn powder to acquire free-form shape. The density, hardness, wear rate, coefficient of friction and electrical conductivity were evaluated for the different compositions of graphene and compared with the pure copper. Besides, the comparison was performed with the conventional method. Findings Cu-Gn composites revealed excellent wear properties due to higher hardness, and the lubrication provided by the graphene. The electrical conductivity of the fabricated Cu-Gn composites started increasing initially but decreased afterwards with increasing the content of graphene. The UAPS fabricated composites outperformed the conventional method manufactured samples with better properties such as density, hardness, wear rate, coefficient of friction and electrical conductivity due to homogeneous mixing of metal particles and graphene. Originality/value The fabrication of Cu-Gn composite freeform shapes was found to be difficult using conventional methods. The novel technique using a combination of polymer three-dimensional printing and UAPS as rapid tooling was introduced for the fabrication of freeform shapes of Cu-Gn composites and mechanical, tribological and electrical properties were studied. The method can be used to fabricate optimized complex Cu-Gn structures with improved wear and electrical applications.

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