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In this study, a novel powder-mixing method was applied to carbon black/polystyrene composites, as a result, the conductivity threshold was as low as 0.37 wt.%, and the volume resistivity of the composite was 269 Ω-m when the addition of carbon black content of only 0.5 wt.%. For comparison, composites synthesized via solution-mixing and melt-mixing were also investigated, which expressed higher conductivity...
Microelectromechanical systems (MEMS) are unified micro devices or systems combining both electrical and mechanical components. Microcantilevers are the most simplified device of MEMS. Moreover, in the last few years the technology has been developed for the fabrication of microcantilever as a sensing device. The sensitivity of the microcantilever depends upon its geometry as well as the material...
In this paper, a novel modified multiwall carbon nanotubes glassy carbon electrode based on poly(xylenol blue) for a rapid, sensitive and highly selective voltammetric determination of for the simultaneous determination of ascorbic acid, epinephrine and uric acid is studied. Modified multiwall carbon nanotubes glassy carbon electrode (MMCNTs-GCE) is characterized by scanning electron microscopy (SEM)...
Nanosphere Lithography (NSL) is inexpensive, inherently parallel, high-throughput and general material nanofabrication technique where single layer polystyrene nanosphere (PSNs) were used as template. The template created by PSNs can be manipulated by various complimentary techniques such as binary layers of PSNs, reactive ion etching (RIE), electron beam radiation and microwave irradiation to create...
Polymers and their composites are emerging as viable alternative products to metal-based and alloy based ones in many common and advanced engineering applications. The feature that makes polymer composites so promising in industrial applications is the possibility of tailoring their properties with special fillers. The comparative performance of carbon-epoxy composite with influence of Cenosphere...
Polyaniline/graphene nanocomposite (PANI/G) was synthesized by an in situ polymerization procedure. The microstructure of PANI/G was characterized to be a mixture of PANI nanowires and graphene sheets by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Energy Dispersive X-Ray Fluoresence Spectrometer (EDX). PANI/G was used to modify glassy carbon electrodes to detect...
Recovery of high pure Terephthalic Acid (TA) from Alkali weight-reduction wastewater by PET hydrolyzing has been researched by purified mother liquid with activated carbon adsorption. The characters of TA obtained were investigated by various indexes. The effects of activated carbon on crystaled TA were also been studied by scanning electronic microscopy (SEM) and particle size analysis. Results has...
Novel non-fragile porous conductive nanocomposite vapor sensors with variant volume porosities and specific surface areas have been fabricated from PMMA and carbon nanoparticles. Sensing films were obtained by well known dry-cast non-solvent induced phase separation (NIPS) method. Porous composite structures have been characterized by SEM, BET and water evaporation methods. Response behavior of fabricated...
This paper discusses micro-filled epoxy-based conducting adhesives modified with nanoparticles, carbon, and metal-coated polymer fillers for z-axis interconnections. A variety of conducting adhesives with particle sizes ranging from 5 nm to 15 mum were incorporated as interconnects in printed wiring board (PWB) or laminate chip carrier (LCC) substrates. Scanning electron microscopy (SEM) and optical...
A nanocomposite of functionalized 2.5 wt.% carboxylated multiwalled carbon nanotubes (MWCNTs) /polyaniline (PANi) is synthesized using in situ chemical polymerization method. MWCNT is coated by using in-situ chemical polymerization of Polyaniline polymer. Structure and morphology of nanocomposite is characterized, using X-ray diffraction pattern (XRD), scanning electron microscopy (SEM) and transmission...
Iron encapsulated carbon nanoparticle - polyvinyl chloride composite films have been prepared by solvent mixing and drying method. The films were characterized by scanning electron microscope (SEM) and high resolution transmission electron microscope (HRTEM). A 5 nm thin graphitic carbon coating is observed on cubic Fe nanoparticles. The microwave absorption studies by wave guide technique in the...
Current topics related to scanning tunneling microscopes (STMs) and atomic force microscopes (AFMs) are reviewed. The first two topics concern recent applications of STMs and AFMs as microscopes with atomic resolution, and recent experiments on atomic and molecular manipulation using STMs. A new multifunctional scanning probe microscope (SPM) system incorporating an AFM/STM is then introduced. Finally,...
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