Radio frequency SF6 plasma modified single-walled carbon nanotubes: Synchrotron spectroscopy and plasma characterisation studies

Single-Walled Carbon Nanotubes are fluorinated within a Radio-Frequency Plasma Reactor using SF6 as a source gas. To develop an understanding of how varying experimental parameters affect the plasma, and hence the resultant modification of the nanotubes, a Langmuir Probe has been employed to study the plasma system. Information about plasma densities, electron temperatures, and the plasma potential is presented and discussed. An interesting oscillatory behavior within the plasma has also been observed and studied

The Scientist, the Artefact and the Exegesis: Challenging the parameters of the PhD

A PhD in science demands rigour, repeatability, and accountability. Epistemological, methodological, and ontological expectations flood the policies, procedures, and practice. One mode of doctorate has existed beyond the typical parameters of science: the artefact and exegesis PhD. Most commonly positioned in the creative arts and creative writing, how could this mode of doctorate be deployed in the sciences? This article, written by three academics who shared this innovative supervisory space, reveals the strengths and challenges that emerge from this innovative form and content for research. Our goal is to open out transformative spaces for doctoral education through diverse disciplines. Ilmuwan, Artefak, dan Eksegesis: Menantang Parameter PhDAbstrakGelar PhD dalam sains menuntut ketelitian, pengulangan, dan akuntabilitas. Harapan epistemologis, metodologis, dan ontologis membanjiri kebijakan, prosedur, dan praktik. Satu mode doktor telah ada di luar parameter khas sains: artefak dan eksegesis PhD. Paling sering diposisikan dalam seni kreatif dan penulisan kreatif, bagaimana mode doktor ini dapat digunakan dalam sains? Artikel yang ditulis oleh tiga akademisi yang berbagi ruang pengawasan inovatif ini mengungkapkan kekuatan dan tantangan yang muncul dari bentuk dan konten inovatif untuk penelitian ini. Tujuan kami adalah untuk membuka ruang transformatif untuk pendidikan doktoral melalui beragam disiplin ilmu

Preparation of carbon surfaces for sensing applications via plasma hydrogenation

[Canberra, ACT

Plasma fluorination of highly ordered pyrolytic graphite and single walled carbon nanotube surfaces

Los Alamitos, C

Transition from single to multi-walled carbon nanotubes grown by inductively coupled plasma enhanced chemical vapor deposition

In this work a simple and up-scalable technique for creating arrays of high purity carbon nanotubes via plasma enhanced chemical vapor deposition is demonstrated. Inductively coupled plasma enhanced chemical vapor deposition was used with methane and argon mixtures to grow arrays in a repeatable and controllable way. Changing the growth conditions such as temperature and growth time led to a transition between single and multi-walled carbon nanotubes and was investigated. This transition from single to multi-walled carbon nanotubes is attributed to a decrease in catalytic activity with time due to amorphous carbon deposition combined with a higher susceptibility of single-walled nanotubes to plasma etching. Patterning of these arrays was achieved by physical masking during the iron catalyst deposition process. The low growth pressure of 100 mTorr and lack of reducing gas such as ammonia or hydrogen or alumina supporting layer further show this to be a simple yet versatile procedure. These arrays were then characterized using scanning electron microscopy, Raman spectroscopy and x-ray photoelectron spectroscopy. It was also observed that at high temperature (550 °C) single-walled nanotube growth was preferential while lower temperatures (450 °C) produced mainly multi-walled arrays

Preparation of catalytic substrates with ordered size of iron nanoparticles for production carbon nanotubes

Canberra, ACT, Australi

Characterisation of Methane Plasma Treated Carbon Surfaces

Los Alamitos, US

Revisioning Student Learning: Applying Disciplinary Literacy to Curricula Design

Why do students succeed? More poignantly, why do students fail? This article offers a series of scaffolded models to render disciplinary literacy overt, explicit and clear. We show how ‘disciplinary literacy’ is a phrase, trope, and concept that underpins theoretical models to enable student success, while respecting the diversity of student backgrounds and pathways into formal learning. Most importantly, this article reveals the value of reconciling the relationship between the research and teaching functions of academic life. We present models that operate in the spaces between research and teaching, success and failure, form and content, content and context. Our goal is to transcend the labelling of learners, such as ‘at risk’ or ‘high achievers.’ Instead, our models occupy the spaces of learning, rendering them granular, customised and transformative, and ready for deployment in curricula design