304 citations · 774 across the 11 of their papers we have counts for
11 papers
A Sequential Benders-based Mixed-Integer Quadratic Programming Algorithm and Its Implementation in the CAMINO Toolbox
Andrea Ghezzi, Wim Van Roy, Sebastian Sager +1
Sequential quadratic programming and sequential convex programming efficiently solve nonlinear programs (NLPs) by linearizing inner nonlinearities while preserving the outer convex…
Improved Algorithms for Nanopore Signal Processing
Nima Arjmandi, Willem Van Roy, Liesbet Lagae +1
Nanopore resistive pulse techniques are based on analysis of current or voltage spikes in the recorded signal. These spikes result from translocation of nanometer sized analytes th…
Understanding nanoscale temperature gradients in magnetic nanocontacts
Sébastien Petit-Watelot, Ruben Miguel Otxoa, Mauricio Manfrini +4
We determine the temperature profile in magnetic nanocontacts submitted to the very large current densities that are commonly used for spin-torque oscillator behavior. Experimental…
Boosting the Figure Of Merit of LSPR-based refractive index sensing by phase-sensitive measurements
Kristof Lodewijks, Wim Van Roy, Gustaaf Borghs +2
Localized surface plasmon resonances possess very interesting properties for a wide variety of sensing applications. In many of the existing applications only the intensity of the…
Self-assembled hexagonal double fishnets as negative index materials
Kristof Lodewijks, Niels Verellen, Willem Van Roy +2
We show experimentally the successful use of colloidal lithography for the fabrication of negative index metamaterials in the near-infrared wavelength range. In particular, we inve…
Frequency shift keying in vortex-based spin torque oscillators
M. Manfrini, T. Devolder, Joo-Von Kim +4
Vortex-based spin-torque oscillators can be made from extended spin valves connected to an electrical nanocontact. We study the implementation of frequency shift keying modulation…
Direct experimental measurement of phase-amplitude coupling in spin torque oscillators
L. Bianchini, S. Cornelissen, Joo-Von Kim +4
We study spin-torque induced oscillations of MgO magnetic tunnel junctions in the time domain. By using the Hilbert transform on the time traces, we obtain for the first time a dir…
Agility of vortex-based nanocontact spin torque oscillators
M. Manfrini, T. Devolder, Joo-Von Kim +7
We study the agility of current-tunable oscillators based on a magnetic vortex orbiting around a point contact in spin-valves. Theory predicts frequency-tuning by currents occurs a…
Quantized spin wave modes in magnetic tunnel junction nanopillars
A. Helmer, S. Cornelissen, T. Devolder +4
We present an experimental and theoretical study of the magnetic field dependence of the mode frequency of thermally excited spin waves in rectangular shaped nanopillars of lateral…
Highly efficient room temperature spin injection in a metal-insulator-semiconductor light emitting diode
P. Van Dorpe, V. F. Motsnyi, M. Nijboer +6
We demonstrate highly efficient spin injection at low and room temperature in an AlGaAs/GaAs semiconductor heterostructure from a CoFe/AlOx tunnel spin injector. We use a double-st…
Electrical Spin Injection in a Ferromagnetic / Tunnel Barrier/ Semiconductor Heterostructure
V. F. Motsnyi, V. I. Safarov, J. De Boeck +4
We demonstrate experimentally the electrical ballistic electron spin injection from a ferromagnetic metal / tunnel barrier contact into a semiconductor III-V heterostructure. We in…