Publications by Liza Carol Andrea Dunbar

Related publications (30)

Eflop: a Sparsity-aware Metric for Evaluating Computational Cost in Spiking and Non-spiking Neural Networks

Deploying energy-efficient deep neural networks on energy-constrained edge devices is an important research topic in both machine learning and circuit design communities. Both artificial neural networks (ANNs) and spiking neural networks (SNNs) have been p ...

IOP Publishing Ltd2025

Tuning the optical properties of planar photonic crystals by liquid crystal infiltration

Romuald Houdré, Rolando Ferrini, Libero Zuppiroli, Liza Carol Andrea Dunbar, Barbara Wild

Recently there has been a growing amount of attention devoted to tuneable photonic crystals (PhCs) where the optical response of PhC structures can be dynamically modified. We will show how infiltrating planar PhCs with a synthetic organic material allows ...

SPIE2005

Hierarchical Training of Deep Neural Networks Using Early Exiting

Pascal Frossard, Liza Carol Andrea Dunbar, Ahmet Caner Yüzügüler, Yamin Sepehri

Deep neural networks (DNNs) provide state-of-the-art accuracy for vision tasks, but they require significant resources for training. Thus, they are trained on cloud servers far from the edge devices that acquire the data. This issue increases communication ...

Ieee-Inst Electrical Electronics Engineers Inc2024

Plasmonic nanohole arrays on Si-Ge heterostructures: An approach for integrated biosensors

Hatice Altug, Liza Carol Andrea Dunbar, Dordaneh Etezadi

Nanohole array surface plasmon resonance (SPR) sensors offer a promising platform for high-throughput label-free biosensing. Integrating nanohole arrays with group-IV semiconductor photodetectors could enable low-cost and disposable biosensors compatible t ...

Spie-Int Soc Optical Engineering2016

Polarization sensitive silicon photodiodes using nanostructured metallic grids

Olivier Martin, Christian Santschi, Liza Carol Andrea Dunbar

In this paper, we present the design, fabrication, and characterization of wire grid polarizers. These polarizers show high extinction ratios and high transmission with structure dimensions that are compatible with current complementary metal-oxide-semicon ...

2009

Constrained Zero-Shot Neural Architecture Search on Small Classification Dataset

Liza Carol Andrea Dunbar

The rapid evolution of Deep Learning (DL) has brought about significant transformations across scientific domains, marked by the development of increasingly intricate models demanding powerful GPU platforms. However, edge applications like wearables and mo ...

IEEE2024

VIVALDI: steel billet tracking with advanced computer vision

Liza Carol Andrea Dunbar

Our advanced computer vision system allows for the precise tracking of serial numbers on steel billets in challenging industrial settings. It combines cutting-edge hardware and machine learning, excelling in character recognition (99.8%) and localization w ...

SPIE2024

Optical Transmission Properties of Corrugated Nanoscale Hole Arrays in Thin Gold Films

Jürgen Brugger, Liza Carol Andrea Dunbar

2008

Optical photonic crystal condensing device

Romuald Houdré, Liza Carol Andrea Dunbar, Benoît Lombardet

A photonic crystal structure for condensing electromagnetic radiation comprising a modulated square-shaped lattice and a corresponding condensing device are disclosed. ...

2006

Planar photonic crystals infiltrated with liquid crystals: optical characterization of molecule orientation

Romuald Houdré, Rolando Ferrini, Libero Zuppiroli, Liza Carol Andrea Dunbar, Barbara Wild, Vasily Zabelin

Nematic liquid crystals are infiltrated into InP-based planar photonic crystals. Optical measurements as a function of temperature and polarization are used to study the average director field configuration in the nanometer-size holes: a planar equilibrium ...

Opt. Soc. America2006

Photonic Crystals for Far-Infrared Wavelength Quantum Cascade Lasers

Romuald Houdré, Rolando Ferrini, Liza Carol Andrea Dunbar, Marcella Giovannini

2005

Tuneable planar photonic crystals

Romuald Houdré, Libero Zuppiroli, Rolando Ferrini, Liza Carol Andrea Dunbar, Barbara Wild

2005

Liquid crystal infiltration of InP-based planar photonic crystals

Romuald Houdré, Rolando Ferrini, Frank Nüesch, Libero Zuppiroli, Liza Carol Andrea Dunbar, Barbara Wild

A procedure for the infiltration of planar photonic crystals (PhCs) with liquid crystals (LCs) is presented. InP-based PhCs are infiltrated with the nematic LC-K15 in a specially designed high-vacuum chamber. The infiltration technique is validated and sys ...

AIP2006