Assessing the use of Circumferentially Notched Tension specimen for fracture toughness determination of ductile offshore steels

The Circumferentially Notched Tension (CNT) specimen is a potential candidate for determining the fracture toughness of highly constrained cracks, theoretically approaching plane strain conditions, even for small test specimen dimensions. This research aims to experimentally evaluate the use of the CNT test specimen geometry to fracture...

Flexible Interposer Based on Carbon Nanotubes and PDMS Composite

A new method of flexible interposer with vertically aligned carbon nanotube (CNT) embedded in polymer is proposed in this thesis. Interposer, working as electrical routing between different sockets or connections, is being used for spreading connections and rerouting in packaging technology nowadays. With the rapidly growing application of...

Thermally Driven Sound Source: Application of CNT nanofoams

On chip grown CNT nanofoam has a large surface to volume ratio and excellent thermal electrical properties, which is suitable to be used as a thermoacoustic heater. The highly porous foam exchanges heat with surrounding air efficiently. Every processing step is specifically designed to be CMOS compatible using cleanroom microfabrication. This...

Synthesis of a Long Vertically Aligned Carbon Nanotube Array by Chemical Vapour Deposition

Although a lot of research has been devoted to the growth of a long Vertically Aligned Carbon Nanotube Array (VANTA), it remains difficult to find the right parameters on new systems. It has turned out that the recipe that allows the growth of Carbon Nanotube (CNT) in a particular Chemical Vapour Deposition (CVD) oven is very specific and not...

Fabrication and characterization of an Upside-down CNT MEA

Over the last few years the need of new alternatives to traditional disease modelling, drug screening and toxicity tests has boosted the development of a new class of devices called Organ on Chip. These usually consist in a substrate or a well in which cells are cultured with the aim of differentiating them in a particular tissue lineage. With...

The effect of humidity and strain on the electrical resistance of an epoxy based nanocomposite: An experimental and numerical investigation

Recent advances in nanocomposites based on conductive carbon nanotubes (CNTs) have led to investigations of using CNT networks as strain sensors. When CNTs are incorporated into a polymer matrix to form electrical networks, the developed conductive nanocomposite becomes sensitive to strain, thus a linear correlation can be found between strain...