A review of shape memory alloy research, applications and opportunities

Singular Integral Equations. By N.I. Muskhelishvili. Translated fromthe 2nd Russian edition by J.R.M. Radok. Pp. 447. F1. 28.50. 1953. (Noordhoff, Groningen)

This Review focuses on noncovalent functionalization of graphene and graphene oxide with various species involving biomolecules, polymers, drugs, metals and metal oxide-based nanoparticles, quantum dots, magnetic nanostructures, other carbon allotropes (fullerenes, nanodiamonds, and carbon nanotubes), and graphene analogues (MoS2, WS2). A brief description of π–π interactions, van der Waals forces, ionic interactions, and hydrogen bonding allowing noncovalent modification of graphene and graphene oxide is first given. The main part of this Review is devoted to tailored functionalization for applications in drug delivery, energy materials, solar cells, water splitting, biosensing, bioimaging, environmental, catalytic, photocatalytic, and biomedical technologies. A significant part of this Review explores the possibilities of graphene/graphene oxide-based 3D superstructures and their use in lithium-ion batteries. This Review ends with a look at challenges and future prospects of noncovalently modified graph...

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Noncovalent Functionalization of Graphene and Graphene Oxide for Energy Materials, Biosensing, Catalytic, and Biomedical Applications

Shape-memory polymers and their composites: Stimulus methods and applications

Along with extensive research on the three-dimensional (3D) printing of polymers and metals, 3D printing of ceramics is now the latest trend to come under the spotlight. The ability to fabricate ceramic components of arbitrarily complex shapes has been extremely challenging without 3D printing. This review focuses on the latest advances in the 3D printing of ceramics and presents the historical origins and evolution of each related technique. The main technical aspects, including feedstock properties, process control, post-treatments and energy source–material interactions, are also discussed. The technical challenges and advice about how to address these are presented. Comparisons are made between the techniques to facilitate the selection of the best ones in practical use. In addition, representative applications of the 3D printing of various types of ceramics are surveyed. Future directions are pointed out on the advancement on materials and forming mechanism for the fabrication of high-performance ceramic components.

3D printing of ceramics: A review

Multifunctional Polymeric Smart Materials

The growing application of shape memory polymer (SMP) materials for aerospace has highlighted the need for an advanced electro actuation of the material’s inductive approach. This paper presents conductive SMP incorporating carbon black (CB) and short carbon fiber (SCF). It was found that the particulate additives wer e dispersed homogeneously within matrix and serve d as interconnections between the fibers, while the fibrous additives act ed as long distance charge transporter by forming local conductive paths from the scanning electro microscopy (SEM) . The glass transit ion temperature ( Tg ) of composites is lower than that of pure SMP , and the effect of CB and SCF on the Tg are obvious. For the 5 wt% CB and 2 wt% SCF nanocomposite, the storage modulus is 2.31 GPa at the temperature of 273 K which increases by 12.7 % compar ed to that of the pure SMP , and the Tg is 62.2 o C from d ynamic mechanical a nalyzer (DMA) test . The electrical conductivity of the corresponding composite achieves 1.13×10 -1 S·cm -1 by DC supply measurement and 3 S·cm -1 by four -point probe Van De Pauw me thod. Then it can be induced by passing an electrical current with a constant voltage of 25 V, when the power is 9 W. So the electro activate SMP is realized, it is so convenient that SMP will have fully reached its technological potential.

Conductive Shape Memory Polymer Composite Technology and Its Applications in Aerospace

Evolution of microstructures and thermal properties with heat treatment for absorbing, emitting and scattering fibrous medium

The invention discloses a method for preparing a particle reinforced gradient material by combined action of ultrasonic and travelling wave magnetic fields, and relates to a method for preparing a particle reinforced gradient material The method can be used for solving the problems that the particle distribution of the second phase cannot be controlled and the wetting property between particles of the second phase and matrix is poor in the conventional method for preparing the particle reinforced gradient material The method comprises the following steps of: 1, adding the particles of the second phase into molten metal and then applying ultrasonic; and 2, cooling a particle reinforced gradient material formed by the reinforced particles of the second phase and the molten metal under the combined action of the ultrasonic and travelling wave magnetic fields, and thus obtaining the solid particle reinforced gradient material The particle reinforced gradient material has a broad application prospect in the fields of aerospace, automobiles, mining machinery and the like

Shanyi Du

Papers

Multifunctional Polymeric Smart Materials

Conductive Shape Memory Polymer Composite Technology and Its Applications in Aerospace

Evolution of microstructures and thermal properties with heat treatment for absorbing, emitting and scattering fibrous medium

Method for preparing particle reinforced gradient material by combined action of ultrasonic and travelling wave magnetic fields

Effect of texture dispersion on the effective biaxial modulus of cubic polycrystalline films