We report on a novel design of an on-chip optical temperature sensor based on a Mach-Zehnder interferometer configuration where the two arms consist of hybrid waveguides providing opposite temperature-dependent phase changes to enhance the temperature sensitivity of the sensor. The sensitivity of the fabricated sensor with silicon/polymer hybrid waveguides is measured to be 172 pm/°C, which is ...

We describe waveguides of photoluminescent silicon-rich silicon dioxide, which have been patterned by triangular two-dimensional ~2D! photonic crystals to give higher-order photonic bandgaps occurring within the luminescence band of the core material. Photonic crystal modification of the photoluminescence spectrum allows identification of angle-tuned photonic bandgaps, in close agreement with 2...

Aluminum hybrid metal matrix nanocomposites (Al/SiC/TiO2) were synthesized through a microwave-assisted powder metallurgy process, and their evolved microstructure mechanical properties investigated. The Al/SiC/TiO2 prepared by reinforcing aluminum (Al) with fixed amount of silicon carbide (SiC) nanoparticles (5 wt.%) varying concentrations titanium dioxide (TiO2) (3, 6, 9 wt.%). morphology res...

This paper reviews the various fabrication methodologies explored for polydimethylsiloxane (PDMS) based nanocomposites along with their applications in gas sensing and other associated domains. PDMS is well known polymer its biocompatibility, durability, transparency, adoptability to any size shape via replication technique. Envisioning potential prospects flexible device realization, this revi...

We present a process to fabricate molecule-based nanostructures by merging a bottom-up interaction and a top-down nanolithography. Direct nanoscale positioning arises from the attractive electrostatic interactions between the molecules and silicon dioxide nanopatterns. Local oxidation nanolithography is used to fabricate silicon oxide domains with variable gap separations ranging from 40 nm to ...

Defects in the near sidewall region in selective epitaxial growth of silicon have prevented its widespread use as a viable dielectric isolation technology. The main cause of these defects has been demonstrated to be thermal stress due to mismatch in the coefficient of thermal expansion between silicon and silicon dioxide. This article presents the detailed electrical characterization of these s...

UNLABELLED The development of synthetic bone grafts with requisite mechanical and morphological properties remains a key challenge in orthopaedics. Supercritical carbon dioxide (scCO2)-processed nanocomposites consisting of organically-modified montmorillonite clay dispersed in poly-d-lactide (PDLA) have shown structural and mechanical properties similar to corticocancellous bone. Using quantit...

34 ❘ ❘ ❘ 104:10 (2003) T 243 Pulp & Paper Canada OBJECTIVES OF STUDY The main objective of the engineering study carried out by KBR was to develop order-of-magnitude (±25% accuracy) capital cost estimates, and operating cost estimates, for selected process concepts, and to carry out financial analyses to determine the economic viability of such a mill. The details of all these activities are be...

Non-conventional crystallization techniques have been developed in recent years. use primary structural elements (for example, clusters) rather than atoms and molecules. Modern nanomaterial science is going through great changes as an entirely new approach of non-conventional growth mechanisms emerging due to cluster coupling, catalyzing interest physics. The formation fractal percolation clust...