24 papers · ranked by Valyu relevance
Yanlin Sui, Tao Yu, Longqi Wang, Zhi Wang + 5 more
'Xin Liu' 'Yongkun Chen' 'Haruo Kobayashi'] In space gravitational-wave-detection missions, inertial sensors are used as the core loads, and their acceleration noise needs to reach $(3\times10-15 \text{ms}-2/\text{Hz})$ at a frequency of $0.1 \text{mHz}$, which corresponds to the capacitive sensing system; the…
Yongsang Yoo, Byong-Deok Choi, Jae-Sung An
The development of microelectromechanical system (MEMS) processes enables the integration of capacitive sensors into silicon integrated circuits. These sensors have been gaining considerable attention as a solution for mobile and internet of things (IoT) devices because of their low power consumption. In this study, we…
Seung Yeon Lee, Jae Yoon Sim, Dong-Yeop Seok, Yong Bum Kim + 8 more
Capacitive sensors are widely adopted in compact robotic systems due to their simple structure, ease of fabrication, and scalability for miniaturized designs. However, sensor miniaturization inevitably leads to reduced sensitivity and increased sensitivity imbalance, particularly in torque measurements, due to limited…
Bingnan Wang, Jiang Long, Koon Hoo Teo, Roland Moser
In this paper, multi-channel capacitive sensor arrays based on microstrip band-stop filters are studied. The sensor arrays can be used to detect the proximity of objects at different positions and directions. Each capacitive sensing structure in the array is connected to an inductive element to form resonance at…
Vismaya Walawalkar, Md. Sakibur Sajal, Yann Gilpin, Marc Dandin + 1 more
Nanostructures fabricated with DNA are emerging as a practical approach for applications ranging from advanced manufacturing to therapeutics. To support the strides made in improving accessibility and facilitating commercialization of DNA nanostructure applications, we identify the need for a rapid characterization…
Lasitha Piyathilaka, Basura Sooriyaarachchi, Sarath Kodagoda, Karthick Thiyagarajan
'Karthick Thiyagarajan'] Abstract—Understanding the underlying structure of building surfaces like walls and floors is essential when carrying out building maintenance and modification work. To facilitate such work, this paper introduces a capacitive sensor based technology which can conduct non-destructive evaluation…
Ladislav Polak, Roman Sotner, Jiri Petrzela, Jan Jerabek
This paper presents a simple relaxation generator, suitable for a sensor interface, operating as a transducer of capacitance to frequency/period. The proposed circuit employs a current feedback operational amplifier, fabricated in I3T25 0.35 $μ$m ON Semiconductor CMOS process, and four passive elements including a…
Kai-Chun Lin, Marc Dandin
We report a 0.18 µm CMOS lab-on-a-chip system that monolithically integrates a passive radio frequency identification (RFID) interface and an 8 × 8 array of capacitance sensors configured for measuring the capacitance change resulting from an overlying biological specimen. This lab-on-CMOS platform is designed to…
Hyuntae Jeong, Pushkaraj Joshi, Yinshi Hu, Jiwon Kim + 3 more
Label-free tracking of adherent cell migration could enable important insights into biological processes such as tissue repair, inflammatory response, or cancer progression. Nevertheless, visualizing unlabeled animal cells using optical microscopy remains challenging due to low contrast as well as frequent changes in…
Khoi Ly, Nicholas Kellaris, Dade McMorris, Brian K. Johnson + 7 more
'Eric Acome' 'Vani Sundaram' 'Mantas Naris' 'J. Sean Humbert' 'Mark E. Rentschler' 'Christoph Keplinger' 'Nikolaus Correll'] Abstract— Soft robotics is a field of robotic system design characterized by materials and structures that exhibit large-scale deformation, high compliance, and rich multifunctionality. The…
Yida Li, Suryakanta Nayak, Yuxuan Luo, Yijie Liu + 5 more
We report on the dual mechanical and proximity sensing effect of soft-matter interdigitated (IDE) capacitor sensors, together with its modelling using finite element (FE) simulation to elucidate the sensing mechanism. The IDE capacitor is based on liquid-phase GaInSn alloy (Galinstan) embedded in a polydimethylsiloxane…
Gema Salinero, Guillermo Robles, Guillermo Villanueva, Sabina Merlo + 3 more
'Aldo Minardo' 'Nunzio Cennamo' 'Cosimo Trono'] The transition toward more electric aircraft (MEA) and all-electric aircraft (AEA) has driven the adoption of high-voltage DC (HVDC) electrical architectures to meet increasing power demands while reducing weight and enhancing overall efficiency. However, HVDC systems…
Natale, Lorenzo, Cannata, Giorgio
Research on tactile sensing has been progressing at constant pace. In robotics, tactile sensing is typically studied in the context of object grasping and manipulation. In this domain, the development of robust, multi-modal, tactile sensors for robotic hands has supported the study of novel algorithms for in-hand…
Y. Gilpin, C.-Y. Lin, M. Dandin
Lab-on-CMOS is an instrumentation technology that combines miniaturized bioanalytical hardware with complementary metal-oxide semiconductor (CMOS) electronics to provide integrated biosensing in a compact format. This paper focuses on a class of lab-on-CMOS systems that utilize capacitance sensing as a means to monitor…
Sizhen Bian, Mengxi Liu, Bo Zhou, Paul Lukowicz + 1 more
Due to the fact that roughly sixty percent of the human body is essentially composed of water, the human body is inherently a conductive object, being able to, firstly, form an inherent electric field from the body to the surroundings and secondly, deform the distribution of an existing electric field near the body.…
L. R. Soenksen, T. Kassis, M. Noh, L.G. Griffith + 1 more
Precise fluid height sensing in open-channel microfluidics has long been a desirable feature for a wide range of applications. However, performing accurate measurements of the fluid level in small-scale reservoirs (<1mL) has proven to be an elusive goal, especially if direct fluid-sensor contact needs to be avoided. In…
Nasim Farajpour, Y. M. Nuwan, D. Y. Bandara, Vinay Sharma + 2 more
The pervasive model for a solvated, ion-filled nanopore is often a resistor in parallel with a capacitor. However, for conical nanopore geometries, we propose the inclusion of a Warburg-like element which is necessary to explain otherwise anomalous observations such as negative capacitance and lowpass filtering of…
Youven Benseghir, Min Ying Tsang, Flora Schöfbeck, Daniel Hetey + 3 more
Poly(3,4-ethylenedioxythiophene)-functionalized (PEDOT) MIL-101(Cr) nanoparticles were deposited via drop-casting onto interdigitated electrodes (IDEs). The application of an alternating potential during drop-casting allowed precise spatioselective deposition of the nanoparticles in the interelectrode gaps, generating…
Authors not listed
Selective detection of specific volatile organic compounds (VOCs) is crucial for health, safety, and environmental applications, but current sensors suffer from poor selectivity and struggle to measure specific VOCs in the presence of interfering compounds and water vapor. To address this issue, we introduce the…
J. S. Bobowski, Md. Saimoom Ferdous, Thomas Johnson
—A single-contact voltage sensor designed for accurate measurements of ac voltages across a pair of conductors is described. The sensor design is motivated by remote monitoring applications where accurate voltage measurement of highvoltage transmission lines is required. The body of the sensor is electrically and…
Francesco Bellando, Ali Saeidi, Adrian M. Ionescu
In the proposed tests with NC PZT capacitors, we demonstrate experimentally a reduction of the SS by 44%, combined with a current efficiency improvement of more than two times. As a consequence of the steeper SS, the current sensitivity to pH is improved by 78%. False positive results, in which an improvement in the SS…
Authors not listed
Conductive hydrogels are hydrated materials with mixed ionic‐electronic conduction that readily bridge living tissue with electronic devices. As bioelectronic interfaces are underpinned by ionic and electronic conductivity, it is important to carefully characterize both contributions. The soft, hydrated, 3D nature of…
Authors not listed
Amines play a significant role in everyday life, and their detection remains a crucial focus in research and development. Although conducting polymer-based gas sensors have been widely reported for amine detection using DC resistivity measurements, they often lack selectivity to distinguish between intragroup…
Shota Ushiba, Tomomi Nakano, Ayumi Shinagawa, Naruto Miyakawa + 7 more
In field-effect transistor (FET) biosensors, charge screening in electrolyte solutions limits sensitivity, thereby restricting the applicability of FET sensors. This is particularly pronounced in graphene FET (GFET) biosensors, where the bare graphene surface possesses a strongly negative charge, which impedes the high…