The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Disorder and chaos are ubiquitous phenomena that are mostly unwanted in applications. On the contrary, they can be exploited to create a new technology. In this talk I will summarize my research in this field, discussing chaotic energy harvesting, nonlinear stochastic resonance and complex nanolasers.
In this talk, we provide an overview of our recent progress in developing high-quality silicon carbide micro/nanophotonic devices and exploring nano-optomechanics on this platform.
Thermal processes play an essential role in the production and processing of countless industrial and consumer products. Narrow bandwidth near infrared (NIR) light allows contactless transfer of energy with a high power per area that can be tailored to the needs of the application. With arrays of VCSELs (Vertical-Cavity Surface Emitting Laser diodes), NIR emitters can be realized that provide heat...
A new method of achieving mode locking using a gain lever Quantum Dot Mode Locked Laser is proposed as an augment to traditional techniques when striving for higher repetition rates.
We investigated ultrafast dynamics of Dirac electrons under a high electric field in graphene combining strong THz pulses and ultrafast transient absorption spectroscopy. Comparison with semi-classical Boltzmann equation clarifies efficient impact ionization process.
The objective of this tutorial is to discuss ultimate opto-electronic device limitations while highlighting recent advances and solutions to overcome them for two key devices at the nanoscale; namely lasers and electro-optic modulators.
This paper explores the effectiveness of various video based learning methods. In recent years the flipped classroom has emerged as an innovative teaching-learning process. In a flipped classroom, study materials are made available to students for self learning before class starts and class hours are utilized for student teacher interaction in a variety of ways. In this research work we experiment...
At present, optimization modeling has become a powerful tool to tackle emergency logistics problems. A multi-objective material supply model in an emergent disaster is first constructed in the paper. The differential evolution (DE) algorithm with constraint handling methods, specialized for the material supply model, is then presented. Finally, a simulation experiment is performed and our results...
This paper presents one strategy for modeling and optimization of a microdilling process. Experimental work has been carried out for measuring the thrust force for five different commonly used alloys, under several cutting conditions. An artificial neural network-based model was implemented for modelling the thrust force. Neural model showed a high goodness of fit and appropriate generalization capability...
LEMA (Learning Environment for Modeling Abilities) is an ICT based tool developed in order to promote students' modeling abilities such as developing explanations of phenomena based on microscopic models, predicting the outcome of new phenomena and revising explanations in the light of experimental evidence. It is developed for the context of self study. In a prior study, we have reported that students...
Telephone buried cable (BC) protection is an essential demand to perform successful wired telecommunication system against theft. Data logging from sensor and electronic communication system can monitor buried cable state to ensure exist of the buried cable to be protected. A number of parameters are associated with telephone buried cable, thus different types of sensors are required to measure the...
The threshold switching characteristics of amorphous NbOx thin films is investigated with particular emphasis on temperature dependence of the switching characteristics. Threshold switching in this material is believed to result from a thermally-induced insulator-metal-transition (IMT) induced along a filamentary path by local Joule heating. Increasing the operating temperature is shown to lead to...
Localized deposition of pure platinum nanostructures was achieved using a combination of focused electron beam induced processing (FEBID) of an inorganic platinum precursor and low temperature annealing in water vapour. This technique enables fabrication of Pt nanostructures with high spatial resolution and purity, for applications in nanoelectronics, sensing devices and catalysis.
Electrons in two-dimensional atomic crystals such as few-layer sheets of graphene or transition-metal dichalcogenides carry several internal degrees of freedom: real spin, orbital pseudospin, and valley isospin. The interplay of these enables new approaches to spin-dependent transport effects. In this paper, three recent developments in this area are discussed: the unusual magnetoelectric properties...
Metallic nano-antennas have been shown to be an excellent candidate for enhancing and directing optical emission from semiconductor based quantum dots (QD). QD photoluminescence (PL) enhancement is achieved by placing a suitably orientated QD in the near-field of a resonant metallic nano-antenna. Through the careful design of an optical Vee-antenna, two distinct visible resonances can be obtained,...
The emergence of Big Data and Data Intensive Systems as specialized fields in computing is motivating the development of new courses and curricula. The biggest challenge is to define coherent and stable intended learning outcomes in a highly dynamic field. It is also necessary to balance between proper knowledge acquisition by student and the required time investment of teacher. We carefully looked...
Developing the creativity of vocational high school students has become critical recently, particularly for mechanical engineering students. The goal of this study was to determine the relationships among factors of “school”, “family”, “intention”, “experience”, and “performance”. Results showed that “experience” moderated the relationship between “intention” and “performance”. Furthermore, “intention”...
Women in Australia continue to be under-represented in the engineering profession particularly in electrical engineering. Attracting students of both genders into engineering by relying on the traditional funnel management approach is inadequate. The focus of this paper is based on the experience of the School of Electrical Engineering and Telecommunications at the University of New South Wales in...
Emotional expression is significant as an essential part in our daily life. Ubiquitous presence of mobile technology-mediated communication creates various affective occasions and affords rich emotional expressions with lower complexity of input. In this paper, we aim to design a simple way of emotional expression through finger movements on mobile phone touch screen allowing for richer affective...
In Marine Control Source Electromagnetic (MCSEM) method for Seabed Logging (SBL), different antenna orientations varies the sensitivity in detecting hydrocarbon layer. Up to the recent works, double stacking of hydrocarbon sensitivity has not been addressed. In this article, first we present the challenging oil detect-ability using different orientations of the electric dipole antenna. Our simulation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.