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Bouwmeester, W. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)
Incoherent backscattering of mm-waves from natural rough surfaces is considered. A novel method is proposed to determine the statistical properties of surface scattering from range profile measurements. The method is based on modeling the road surface as a grid of uncorrelated scattering elements, described by normalized scattering matrices....
journal article 2024
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Bouwmeester, Rik J. (author), Paredes-Vallés, Federico (author), de Croon, G.C.H.E. (author)
Nano quadcopters are small, agile, and cheap platforms that are well suited for deployment in narrow, cluttered environments. Due to their limited payload, these vehicles are highly constrained in processing power, rendering conventional vision-based methods for safe and autonomous navigation incompatible. Recent machine learning developments...
conference paper 2023
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Bouwmeester, W. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)
A method for extracting fully polarimetric statistical properties of road surface radar cross sections is presented. This method is subsequently applied to extract radar cross section information from an asphalt road surface. Furthermore, an approach is introduced to synthesise the scattered signal of road surface returns as measured by a radar....
conference paper 2023
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Bouwmeester, W. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)
The convergence of polarimetric scattering parameters and H, α and A features of road surfaces under various conditions is analysed. It is shown that the number of radar measurements used for surface classification can be traded off with accuracy of the estimation of the mean value and covariance of S-parameters and H, α and A features....
conference paper 2023
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Gomaz, L. (author), Bouwmeester, Celine (author), van der Graaff, Erik (author), van Trigt, B. (author), Veeger, H.E.J. (author)
The large stream of data from wearable devices integrated with sports routines has changed the traditional approach to athletes’ training and performance monitoring. However, one of the challenges of data-driven training is to provide actionable insights tailored to individual training optimization. In baseball, the pitching mechanics and pitch...
journal article 2023
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Bouwmeester, W. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)
A novel approach based on the entropy-alpha-anisotropy decomposition, also known as the $H\alpha A$ decomposition, for the recognition of road surface conditions using automotive radar is presented. To apply the $H\alpha A$ decomposition to automotive radar data, a dedicated signal processing pipeline has been developed. To investigate its...
journal article 2023
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Bouwmeester, J. (author), Kuiper, J.M. (author)
This paper shows the roadmap of the development of a deployable space telescope at Delft University of Technology and explores its applications, key innovations and the design of a small demonstrator. Deployable space telescopes allow for smaller stowed dimensions during launch and it is expected that increasing demand for Earth observation at a...
conference paper 2023
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Volosheniuk, S. (author), Bouwmeester, D. (author), Hsu, C. (author), van der Zant, H.S.J. (author), Gehring, Pascal (author)
Thermocurrent flowing through a single-molecule device contains valuable information about the quantum properties of the molecular structure and, in particular, on its electronic and phononic excitation spectra and entropy. Furthermore, accessing the thermoelectric heat-to-charge conversion efficiency experimentally can help to select...
journal article 2023
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Speretta, S. (author), Bouwmeester, J. (author), Menicucci, A. (author), Di Mascio, S. (author), Uludag, M.S. (author)
This chapter provides an overview of the command and data handling system (CDHS) in small satellites and CubeSats. The chapter presents first analysis of radiation effects, specifically targeted at this subsystem, to justify components and architecture choices. Improvements in radiation testing strategies are also presented, specifically for...
book chapter 2023
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Bouwmeester, D. (author), Ghiasi, T.S. (author), Borin Barin, Gabriela (author), Müllen, Klaus (author), Ruffieux, Pascal (author), Fasel, Roman (author), van der Zant, H.S.J. (author)
Atomically precise graphene nanoribbons (GNRs) are predicted to exhibit exceptional edge-related properties, such as localized edge states, spin polarization, and half-metallicity. However, the absence of low-resistance nanoscale electrical contacts to the GNRs hinders harnessing their properties in field-effect transistors. In this paper, we...
journal article 2023
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Bouwmeester, J. (author), Menicucci, A. (author), Gill, E.K.A. (author)
The objective of this paper is to investigate which approach would lead to more reliable CubeSats: full subsystem redundancy or improved testing. Based on data from surveys, the reliability of satellites and subsystems is estimated using a Kaplan–Meier estimator. Subsequently, a variety of reliability models is defined and their maximum...
journal article 2022
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Bouwmeester, W. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)
A method to compute road surface signatures in the automotive scenario is presented. This method is subsequently applied to a rough asphalt surface without undulations. It is shown that, due to the observation geometry, the road surface signature experiences significant spreading along the Doppler-axis, resulting in a distinct range-Doppler map...
conference paper 2022
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de Valk, S.C. (author), Bouwmeester, Susan E. (author), de Hulster, A.F. (author), Mans, R. (author)
Background: In the yeast Saccharomyces cerevisiae, which is widely applied for industrial bioethanol production, uptake of hexoses is mediated by transporters with a facilitated diffusion mechanism. In anaerobic cultures, a higher ethanol yield can be achieved when transport of hexoses is proton-coupled, because of the lower net ATP yield of...
journal article 2022
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Wang, Y. (author), McCandless, Gregory T. (author), Wang, Xiaoping (author), Thanabalasingam, Kulatheepan (author), Wu, H. (author), Bouwmeester, D. (author), van der Zant, H.S.J. (author), Ali, M.N. (author), Chan, C.L. (author)
The Kagome lattice is an important fundamental structure in condensed matter physics for investigating the interplay of electron correlation, topology, and frustrated magnetism. Recent work on Kagome metals in the AV3Sb5 (A = K, Rb, and Cs) family has shown a multitude of correlation-driven distortions, including symmetry breaking charge...
journal article 2022
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Bouwmeester, J. (author)
This thesis provides an innovative architecture for CubeSats and PocketQubes to improve their performance and reliability. CubeSats and PocketQubes are standard satellite form factors composed of one or more cubic units of 10 cm and 5 cm respectively. It is found that the current modular subsystem approach and the electrical interfaces are not...
doctoral thesis 2021
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Chatzopoulos, Damianos (author), Cho, Doohee (author), Bastiaans, Koen M. (author), Steffensen, Gorm O. (author), Bouwmeester, D. (author), Akbari, Alireza (author), Gu, Genda (author), Paaske, Jens (author), Andersen, Brian M. (author), Allan, Milan P. (author)
By using scanning tunneling microscopy (STM) we find and characterize dispersive, energy-symmetric in-gap states in the iron-based superconductor FeTe<sub>0.55</sub>Se<sub>0.45</sub>, a material that exhibits signatures of topological superconductivity, and Majorana bound states at vortex cores or at impurity locations. We use a...
journal article 2021
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Azpeitia, Jon (author), Frisenda, Riccardo (author), Lee, M. (author), Bouwmeester, D. (author), Zhang, Wenliang (author), Mompean, Federico (author), van der Zant, H.S.J. (author), Garcia-Hernandez, Mar (author), Castellanos-Gomez, Andres (author)
Paper has the potential to dramatically reduce the cost of electronic components. In fact, paper is 10 000 times cheaper than crystalline silicon, motivating the research to integrate electronic materials on paper substrates. Among the different electronic materials, van der Waals materials are attracting the interest of the scientific...
journal article 2021
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Bouwmeester, Brennen (author), Turcios Rodriguez, E.R. (author), Hernandez Ganan, C. (author), van Eeten, M.J.G. (author), Parkin, S.E. (author)
Many consumer Internet-of-Things (IoT) devices are, and will remain, subject to compromise, often without the owner's knowledge. Internet Service Providers (ISPs) are among the actors best-placed to coordinate the remediation of these problems. They receive infection data and can notify customers of recommended remediation actions. There is...
conference paper 2021
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Bouwmeester, J. (author), Radu, S. (author), Uludag, M.S. (author), Chronas, N. (author), Speretta, S. (author), Menicucci, A. (author), Gill, E.K.A. (author)
PocketQubes are a form factor of highly miniaturized satellites with a body of one or more cubic units of 5 cm. In this paper, the characteristics of PocketQubes in terms of their constraints and their (potential) utility are treated. To avoid space debris and limit collision risk, the orbits of PocketQubes need to be constraint. An analysis...
journal article 2020
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Speretta, S. (author), Uludag, M.S. (author), Karunanithi, Visweswaran (author), Radu, S. (author), Chronas Foteinakis, N. (author), Bouwmeester, J. (author), Menicucci, A. (author), Gill, E.K.A. (author)
This paper presents the design of a multi-frequency deployable antenna system for femto-satellites as part of the Delfi-PQ project, a PocketQube with a size of 50x50x178 mm which is being developed by the Delft University of Technology. This new form factor brings its own challenges on every subsystem and it is seen as a stepping stone towards...
conference paper 2019
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