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Dr Otti D'Huys

 Lecturer in Mathematics

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Phone number: +44(0)121 204 3314 
Email: o.dhuys@aston.ac.uk 
Room number: MB313K

My research  focuses on dynamics of networks, specifically on the role of a time-delay. Such a time delay appears for example when coupling optical units; I started my career studying the dynamics of delay- coupled semiconductor lasers, and I have a specific interest for the dynamics optical delay systems. 

Coupling delays can be found in a variety of fields, such as electronic, communication, biologic, neural... networks. I study generic dynamic effects of a delay, such as interplay of delays and noise, the interaction of delay and network symmetry, delay-induced synchronisation patterns,...

Research Background  

I completed my whole education that the Vrije Universiteit Brussel (Belgium). In 2007 I graduated as licentiate in physics; in the framework of my master thesis I studied the dynamics of delay-coupled lasers, under guidance of Jan Danckaert and Ingo Fischer at the Applied Physics Research Group.  I conducted my PhD in the same group, as a fellow of the Research Foundation Flanders (FWO-Vlaanderen). My PhD research concentrated on synchronisation in small networks of delay-coupled generic oscillators and their relation to semiconductor lasers.

After receiving my PhD in 2011, I joined the computational physics group of Wolfgang Kinzel at the University of Würzburg (Germany) as a postdoc. There I investigated fundamental properties of delayed chaotic systems, and the interplay of noise and delay. I moved to the United States for a second postdoc in October 2014. In the group of Daniel Gauthier at Duke University (Durham, North Carolina) I worked on dynamics and information processing in experimental time-delay electronic networks.

Since September 2016 I am a lecturer at Aston University.

  • Licentiate in Physics,  Vrije Universiteit Brussel, Belgium, 2007
  • PhD in Sciences and Bio-engineering, Vrije Universiteit Brussel, Belgium

 

Employment 

  • 09/2016 to date: Lecturer in Mathematics in the School of Engineering and Applied Science, Aston University.
  • 10/2014-5/2016: Postdoctoral Associate, Duke University, USA
  • 10/2011-9/2014: Postdoctoral Researcher, Universitaet Wuerzburg, Germany

 


  • Statistics  (AM20ST)
  • Time Series Analysis (AM30TS)

My research concentrates on the dynamics of networks, and specifically the role of connection delays. Such delays appear in a variety of fields, as in most networks the interaction between is not instantaneous: it takes time for information to travel from one node to another in communication networks, or between coupled optical elements. In gene regulatory networks the process of assembling mRNA and proteins can be modelled with a delay time, whereas in neural networks the delay accounts for the conduction of an electric signal along the axon. Models incorporating a delay also appear in population dynamics, traffic dynamics, or between coupled electronic gates… Even if this delay is small compared to the internal time scale of individual network nodes, it can result in a huge traveling time across a complex network.

I am mainly interested in fundamental properties of delay systems, as the role of network structure in the dynamics, synchronisation and symmetry-breaking in time-delay networks, the interplay of time-delay and stochastic effects,… Being the one of the most important and best understood experimental test-beds in non-linear dynamics, I have particular interest in the dynamics and synchronisation of delay-coupled semiconductor lasers.


If you are interested in conducting a PhD around dynamics, control or information processing in  networks, do not hesitate to contact me.

  • M. Jimenez Matin, J. Rodriguez Laguna, O. D’Huys, J. de la Rubia and E. Korutcheva, “Synchronization of fluctuating networks”, Phys Rev E 95 052210 (2017)
  • J. Lohmann, O. D'Huys, N.D. Haynes, E. Schöll and D.J. Gauthier, "Transient dynamics and their control in time-delay autonomous Boolean ring networks", Phys. Rev. E 95, 022211 (2017) 
  • O. D'Huys, T. Jüngling and W. Kinzel, “On the interplay of noise and delay in coupled oscillators", chapter in "Control of Self-Organizing Nonlinear Systems", pp 127-145  ,  eds. E. Schöll, S. Klapp and P. Hövel.  Book Series: Understanding Complex Systems, Springer Complexity   (2016) 
  •  O. D’Huys, J. Lohmann, N.D. Haynes and D.J. Gauthier, “Super-transient scaling in time-delay autonomous Boolean network motifs, Chaos 26, 094810 (2016)
  • M. Jimenez Martin, O. D'Huys, L. Lauerbach, E. Korutscheva and W. Kinzel, “Chaos synchronization by resonance of multiple delay times”, Phys. Rev. E 93, 022206 (2016)
  • T. Jüngling, O. D'Huys and W. Kinzel, “The transition between strong and weak chaos in delay systems:  stochastic modeling approach”, Phys. Rev. E 91 062918 (2015)
  • X. Porte, O. D'Huys,  T. Jüngling, D. Brunner, M.C. Soriano and I. Fischer, “Autocorrelation function of delayed feedback semiconductor lasers: Linear properties and delay time determination”,  Phys. Rev. E 90, 052911 (2014)
  • O. D'Huys, T. Jüngling and W. Kinzel, Stochastic switching in networks of delay-coupled oscillators, Phys. Rev. E 90, 032918 (2014)
  • O. D'Huys, S. Zeeb, T. Jüngling, S. Heiligenthal, S. Yanchuk and W. Kinzel, “Synchronisation and scaling properties of chaotic networks with multiple delays”, Europhysics Letters 103, 10013 (2013)
  • S. Heiligenthal, T. Jüngling, O. D'Huys, D.A. Arroyo-Almanza, M.C. Soriano, I. Fischer, I. Kanter and W. Kinzel, Strong and weak chaos in networks of semiconductor lasers with time-delayed couplings, Phys. Rev. E 88, 012902 (2013)
  • L. Weicker, T. Erneux, O. D’Huys, J. Danckaert, M. Jacquot, Y. Chembo and L. Larger, Slow-fast dynamics of a time-delayed electro-optic oscillator,  Phil. Trans. R. Soc. A 371, 20120459 (2013)
  • L. Weicker, T. Erneux, O. D’Huys, J. Danckaert,  M. Jacquot, Y. Chembo and L. Larger, "Strongly asymmetric square waves in a time-delayed system", Phys. Rev. E 86, 055201(R) (2012)
  • K. Hicke, O. D’Huys, V. Flunkert, E. Schöll, J. Danckaert and I. Fischer, “Mismatches and synchronization: Influence of asymmetries in systems of two delay-coupled lasers“,  Phys. Rev. E 83056211 (2011)
  • O. D’Huys, I. Fischer, J. Danckaert and R. Vicente, “On the role of delay for the symmetry in the dynamics of networks”, Phys. Rev. E 83, 046223 (2011)
  • O. D’Huys, I. Fischer, J. Danckaert and R. Vicente, “Amplitude and phase effects on the synchronization of delay-coupled oscillators”, Chaos 20 043127 (2010)
  • V. Flunkert, O. D'Huys, J. Danckaert, I. Fischer and E. Schöll, Bubbling in delay-coupled lasers, Phys. Rev. E 79, 065201 (R) (2009)
  • O. D’Huys, R. Vicente, T. Erneux, J. Danckaert and I. Fischer, “Synchronization of network motifs: influence of delay and symmetry”, Chaos 18 037116 (2008)  (Selected by Virtual Journal of Biological Physics Research, Volume 16, Issue 7    
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