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September 2017

Prof. Yasuaki Monnai – Terahertz Leaky-Wave Antennas for Real World Applications

September 28 @ 4:10 pm - 5:00 pm
S112, Engineering South

Abstract We discuss the implementation and application of terahertz leaky-wave antennas (LWA). A LWA is an antenna array integrated with a waveguide. It can generate a directional beam by coherently leaking a traveling wave from a waveguide into free space. It also enables dynamic beam steering enabled by frequency sweeping. These characteristics are particularly relevant for developing a low-loss, low-profile, and wide-aperture terahertz transmission systems. As a proof of concept, we demonstrate an application of LWAs to radar imaging in…

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October 2017

Wendy SL Lee – Broadband terahertz circular-polarization beam splitter

October 5 @ 4:10 pm - 4:35 pm

Abstract Splitting circularly polarised waves is desirable for high-data rate wireless communications and study of molecular chirality at terahertz frequencies. Typically, this functionality is achieved using bulk optical systems with limitations in material availability, bandwidth and efficiency. As an alternative, we employ metasurfaces with spatially varying broadband birefringence to attain the same functionality. We demonstrate that a metasurface designed with gradually rotated birefringent resonators can deflect normally incident left handed circularly polarized (LHCP) and right handed circularly polarized (RHCP) waves…

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Peng Wang – Realizing long-term memory in cognitive architectures using resistive devices

October 5 @ 4:35 pm - 5:00 pm

Abstract Complex cognitive agents are expected to persist for a long time and acquire a large amount of knowledge in long-term memory. However, the hypothesized agent running on a von Neumann computer can generate substantial traffic across the memory hierarchy, and the sequential processing nature of von Neumann’s location-addressed computing scheme can be prohibitively inefficient and time-consuming for contextual information retrieval from a large knowledge base. An optimised hardware is needed. This research considers a flat resistive content-addressable memory as…

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The Conversation

October 26 @ 4:10 pm - 5:00 pm
S112, Engineering South

The Conversation is a news website where academic rigour meets journalistic flair. All stories are authored by academics working closely with The Conversation editors. Writing for The Conversation can help take your research to a national and global audience and build your profile. Presented by Dr Sarah Keenihan, Section Editor Science and Technology, this session will allow you to: • Hear more about The Conversation • See what sorts of articles we publish • Learn how to pitch your ideas…

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