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Majid, A.Y. (author), Delle Donne, C. (author), Maeng, Kiwan (author), Colin, Alexei (author), Yildirim, Kasim Sinan (author), Lucia, Brandon (author), Pawełczak, Przemysław (author)Energy-neutral Internet of Things requires freeing embedded devices from batteries and powering them from ambient energy. Ambient energy is, however, unpredictable and can only power a device intermittently. Therefore, the paradigm of intermittent execution is to save the program state into non-volatile memory frequently to preserve the...journal article 2020
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Siddiqi, M.A. (author), Serdijn, W.A. (author), Strydis, C. (author)The wireless capabilities of modern Implantable Medical Devices (IMDs) make them vulnerable to security attacks. One prominent attack, which has disastrous consequences for the patient’s wellbeing, is the battery Denial-of-Service attack whereby the IMD is occupied with continuous authentication requests from an adversary with the aim of...journal article 2020
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de Winkel, J. (author), Kortbeek, V. (author), Hester, Josiah (author), Pawełczak, Przemysław (author)We present ENGAGE, the first battery-free, personal mobile gaming device powered by energy harvested from the gamer actions and sunlight. Our design implements a power failure resilient Nintendo Game Boy emulator that can run off-the-shelf classic Game Boy games like Tetris or Super Mario Land. This emulator is capable of intermittent...journal article 2020
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Stuber, V.L. (author), Deutz, Daniella B. (author), Bennett, James (author), Cannel, David (author), de Leeuw, D.M. (author), van der Zwaag, S. (author), Groen, W.A. (author)Vibrational piezoelectric energy harvesters are being investigated to replace batteries in embedded sensor systems. The energy density that can be harvested depends on the figure of merit, d<sub>33</sub>g<sub>33</sub>, where d<sub>33</sub> and g<sub>33</sub> are the piezoelectric charge and voltage coefficient. Commonly used piezoelectric...journal article 2019
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Blad, Thijs (author), Tolou, N. (author)Although motion energy harvesting at the small scales has been a research topic for over 20 years, the implementation of such generators remains limited in practice. One of the most important contributing factors here is the poor performance of these devices under low-frequency excitation. In this research, a new metric is proposed to...journal article 2019
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Shekhar, A. (author), Kumaravel, Vinod Kumar (author), Klerks, Stan (author), de Wit, Sten (author), Prasanth, V. (author), Narayan, N.S. (author), Bauer, P. (author), Isabella, O. (author), Zeman, M. (author)Solar road technology provides an opportunity to harvest the vast, albeit dispersed, photovoltaic (PV) energy, while maximizing the land utilization. Deriving experience from the pioneering 70-m solar bike path installed in the Netherlands, this paper highlights the operational challenges and performance parameters using the first-year...journal article 2018
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Dezyani, M. (author), Ghafoorifard, Hassan (author), Sheikhaei, Samad (author), Serdijn, W.A. (author)This paper presents a 60 mV input voltage start-up system for thermoelectric energy harvesting. A new process tolerant inverter cell is proposed, which is functional at supply voltages as low as 60 mV. Using the proposed unit cell, a ring <br/>oscillator has been implemented. The ring oscillator is followed by 40 charge-pump stages, an ultra...journal article 2018
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Gao, Mingyuan (author), Li, Yunwu (author), Lu, Jun (author), Wang, Yifeng (author), Wang, Ping (author), Wang, L. (author)The goal of this study is to develop a vibration-based electromagnetic energy harvesting prototype that provides power to rail-side monitoring equipment and sensors by collecting wheel-rail vibration energy when the train travels. This technology helps power rail–side equipment in off-grid and remote areas. This article introduces the...journal article 2018
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Rao, V.S. (author)The Internet of Things (IoT) is one of the disruptive technologies in today’s connected world. The idea is to connect every thing to the Internet. IoT holds the key to many current and future technologies that will significantly influence the quality and sustainability of life. The vision of IoT is to enable large scalemonitoring and/or control...doctoral thesis 2017
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Campos Martins, G. (author), Serdijn, W.A. (author)The continuous improvement in reducing the power consumption of electronic devices, including biomedical ones, makes the use of energy harvesting systems instead of batteries attractive. Conventionally, energy harvesting systems are optimized to operate in a single worst-case scenario. However, it is often the case that the available input power...conference paper 2017
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- Bernhammer, L.O. (author), Navalkar, S.T. (author), Sodja, J. (author), De Breuker, R. (author), Karpel, M (author) journal article 2017
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Deutz, D.B. (author), Mascarenhas, N.T. (author), Schelen, J.B.J. (author), de Leeuw, D.M. (author), van der Zwaag, S. (author), Groen, W.A. (author)A highly sensitive, lead-free, and flexible piezoelectric touch sensor is reported based on composite films of alkaline niobate K<sub>0.485</sub>Na<sub>0.485</sub>Li<sub>0.03</sub>NbO<sub>3</sub> (KNLN) powders aligned in a polydimethylsiloxane (PDMS) matrix. KNLN powder is fabricated by solid-state sintering and consists of microcubes. The...journal article 2017
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Stoopman, M. (author), Philips, Kathleen (author), Serdijn, W.A. (author)This paper presents the system and circuit design of a compact radio frequency (RF)-powered 2.4-GHz CMOS transmitter (TX) to be used for autonomous wireless sensor nodes (WSNs). The proposed TX utilizes the received dedicated RF signal for both energy harvesting as well as frequency synthesis. A TX RF carrier is derived from the received RF...journal article 2017
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Rodrigues Mansano, A.L. (author)Since the Internet of Things (IoT) is expected to be the new technology to drive the semiconductor industry, significant research efforts have been made to develop new circuit and system techniques for autonomous/very low-power operation of wireless sensor nodes. Very low-power consumption of sensors is key to increase battery lifetime or allow...doctoral thesis 2016
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Stoopman, M. (author)Emerging applications such as Internet of Things (IoT), smart buildings and warehouse inventory management are important driving forces behind the development of Wireless Sensor Nodes (WSNs). With future advancements made in the semiconductor industry, these WSNs are expected to become smaller, cheaper, more reliable and with improved...doctoral thesis 2016
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Mitici, M.A. (author), Goseling, J. (author), de Graaf, M extern (author), Boucherie, R.J. (author)We consider an ad-hoc network of wireless sensors that harvest energy from the environment and broadcasts measurements independently, at random, provided sufficient energy is available. Clients arriving at the network are interested in retrieving measurements from an arbitrary set of sensors of some fixed size s. We show that the sensors...journal article 2016
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Campos Martins, G. (author), Serdijn, W.A. (author)Some systems like RF energy harvesters have power transfer efficiency as one of the most important specifications. Therefore, the efficiency of the matching network, which affects the entire system’s efficiency, plays an important role. When the impedance transformation factor between the antenna and its load is high, the matching network...journal article 2016
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Deutz, D.B. (author), Mascarenhas, N.T. (author), van der Zwaag, S. (author), Groen, W.A. (author)In this study, the influence of Li substitution on the piezoelectric performance of lead-free K<sub>0.5</sub>Na<sub>0.5</sub>NbO<sub>3</sub> (KNN)-epoxy composites is explored. KNN piezoceramic particles modified with 0-12 mol% of Li are prepared via a double calcination technique, resulting in a perovskite particulate which transitions from...journal article 2016
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Tamma, V.P. (author)Information and Communication Technology (ICT) is changing the way we live and has become an essential part of our life. With the advent of Internet of Things (IoT), and Wireless Sensor Networks (WSN) in particular, the number of devices that are networked is increasing exponentially over the years. With the increase in number of ICT devices...doctoral thesis 2012
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Saputra, N. (author)This thesis discusses the design and implementation of a transmitter and a receiver for an FM-UWB scheme in CMOS. The main challenge is to reach a power efficiency of better than 10 nJ/bit at a data rate of 100 kbit/s for both the transmitter and the receiver design. This thesis also discusses the design and implementation of a power management...doctoral thesis 2012