Publications
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Defect detection in carbon fiber-reinforced plate by imaging of mechanical nonlinearity-induced sideband vibrations KU Leuven
Laser Doppler scanning vibrometry is used for imaging spectral vibration components in a carbon fiber-reinforced composite plate that contains a sub-surface delamination defect caused by hammer impact. The images reveal sideband generation at the location of the defect, reflecting mechanical nonlinearity-induced mixing between a high amplitude, low-frequency vibration that modulates the stress–strain behavior near the defect and a low amplitude, ...
Au Nanorod-Based Thermoplasmonic Modulation of Cardiomyocyte Activity with Local Temperature Readout with Implications for Cardiac Physiology In Vitro Models KU Leuven
Cardiomyocyte beating rate modulation is required in multiple in vitro assays, and it is usually done by electrical or optogenetic methods. In this work, we developed and characterized a nanoparticle-based, light-controlled platform to modulate the cardiomyocyte beating rate by near-infrared (NIR) controlled plasmonic stimulation and local temperature monitoring by quantum dot (QD) thermometry. For this purpose, gold nanorods (GNRs) acting as ...
Adaptive polarization photoacoustic computed tomography for biological anisotropic tissue imaging KU Leuven
Most photoacoustic computed tomography (PACT) systems usually ignore the anisotropy of the tissue absorption coefficient, which will lead to the lack of information in reconstructed images. In this work, the effect is addressed of the possible optical absorption anisotropy of tissue on PACT images. The functional relationship is derived between the photoacoustic response and the polarization angle of the excitation light. An adaptive polarized ...
Phase behavior of medium-length hydrophobically associating PEO-PPO multiblock copolymers in aqueous media KU Leuven
HYPOTHESIS: The micellization of block copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) is driven by the dehydration of PPO at elevated temperatures. At low concentrations, a viscous solution of isolated micelles is obtained, whereas at higher concentrations, crowding of micelles results in an elastic gel. Alternating PEO-PPO multiblock copolymers are expected to exhibit different phase behavior, with altered phase ...
Zwicker's Loudness model as a robust calculation method for assessment of adequacy of airborne sound insulation descriptors for partition walls in dwelling houses KU Leuven
The development and validation of single number quantities that are meant to serve for straightforward assessment and comparison of airborne sound insulation properties of partition walls are typically challenged by the necessity to perform large numbers of laboratory listening tests with human subjects. This is because a reliable validation of a single number quantity requires testing for many different wall types with multiple real-life ...
Phase transitions study of the liquid crystal DIO with a ferroelectric nematic, a nematic, and an intermediate phase and of mixtures with the ferroelectric nematic compound RM734 by adiabatic scanning calorimetry KU Leuven
High-resolution calorimetry has played a significant role in providing detailed information on phase transitions in liquid crystals. In particular, adiabatic scanning calorimetry (ASC), capable of providing simultaneous information on the temperature dependence of the specific enthalpy h(T) and on the specific heat capacity c_{p}(T), has proven to be an important tool to determine the order of transitions and render high-resolution information ...