composites – Page 2 – TechConnect Briefs

Impedance and Dielectric Spectroscopy of Nanoparticulate Films and Composites

Gerhardt R.A., Georgia Institute of Technology, US

This paper will describe the ways in which one can use impedance and dielectric spectroscopy for characterizing nanoparticulate thin films and composites. This technique is especially useful for these types of materials because it is [...]

Health Monitoring of Carbon/Carbon Composites Monitored by Ultrasonic TOF Technique

Won S., Korea Institute of Materials Science, KR

Carbon/carbon (C/C) composites reinforced with carbon nanotube are tested for their application to primary aircraft structures using ultrasonic testing. Ultrasonic testing is the most widely used and most powerful procedure for inspecting composites. Composites are [...]

Design and Fabrication of a Large Scale Electric Field Array Device for Directed Self-Assembly of Multilayer BioDerivatized Nanoparticle Materials

Heller M.J., Song Y., University of California San Diego, US

In earlier work, an electronic microarray device was used to carry out a bottom-up approach for the directed self-assembly of higher order 3D structures from biotin/streptavidin, DNA and enzyme derivatized nanoparticles. Structures with up to [...]

Effect of Cutting Parameters on The Surface Roughness of MWCNT Reinforced Epoxy Composite Using End-Milling Process

Harii Krishna Rao G., Ansari M.N.M., Universiti Tenaga Nasional, MY

In this paper, the preparation and casting of sample composite, machining parameters and Scanning electron microscopy (SEM) studies on multi-walled carbon nanotubes (MWCNT) reinforced epoxy composites were discussed. Structurally, MWCNTs consist of multiple layers of [...]

The Study on Nanocellulose and Their Biocomposites

Lim D.-Y., Yoon M.-J., Yoon S.Y., Yoon M.-J., Yoon S.Y., Kim K-Y, Korea Institute of Industrial Technology, KR

Nanocelluloses with the average diameter below 100nm were successfully obtained by high shear fluid processor, microfluidizer. Their large surface area and the nano-scale dimensions can lead to the emerging materials for reinforcements in polymer composites, [...]

Mechanical Reinforcement of Epoxy Resins using Magnetic Aligned Halloysite

Mendoza-Bello S., Barrientos-Ramirez S., Montes de Oca G., Flores-Santos L., Macro-M, S.A. de C.V., MX

In this work we report the synthesis of magnetite nanoparticles using halloysite as template. Halloysite is treated using a two steps activation method (Sn/Pd) and in a third step ferrite is formed using a coprecipitation [...]

Multilayer BioDerivatized Nanoparticle Composites by Electric Field Directed Self-Assembly

Heller M.J., Haiso A.P., University of California San Diego, US

An electronic microarray has been used to carry out directed self-assembly of higher order 3D structures from biotin/streptavidin, DNA and enzyme derivatized nanoparticles. Structures with up to fifty layers of alternating biotin and streptavidin, DNA [...]

Review of Double Wall Carbon Nanotubes, Synthesis and Applications (overview presentation)

Bacsa W., University of Toulouse, FR

We find that the Raman G band for individual double wall carbon nanotubes is split when the two walls are closely spaced or strongly coupled. We show that agglomeration of tubes into bundles leads to [...]

Application of nanoindentation for constituent phases testing

Hussainova I., Jasiuk I., Tallinn University of Technology, EE

Development of advanced composites requires a detailed knowledge of their constituents’ properties as they are often somewhat different from the materials at their bulk form. In the present study, the nanoindentation techniques of two different [...]

Using Nanoparticles and Carbon Nanotubes to Enhance the Properties of a Lead-free Solder

Nai S.M.L., Han Y.D., Jing H.Y., Tan C.M., Wei J., Gupta M., Singapore Institute of Manufacturing Technology, SG

Solders are used in various levels of electronic assembly sequence, whereby good electrical, thermal and mechanical performances of solder are necessary. With miniaturization of devices, diverse functional requirements and ever-stricter operating environments of devices, the [...]