Article
Engineering, Multidisciplinary
Jose A. Hidalgo-Lopez
Summary: This article presents a new Direct Interface Circuit (DIC) that allows digital readout of a group of sensors with a wide range of applications. The circuit is simple and improves measurement accuracy.
Article
Computer Science, Information Systems
T. Sanchez-Rodriguez, J. A. Gomez-Galan, F. Marquez, M. Sanchez-Raya, J. Hinojo, F. Munoz
Summary: The system consists of a charge sensitive amplifier and two unipolar-shaping circuits for time and energy measurement. The signal processing chain includes a fast path and a slow path for accurate measurement of different data and event rates.
Article
Physics, Applied
Piero Luchi, Paolo E. Trevisanutto, Alessandro Roggero, Jonathan L. DuBois, Yaniv J. Rosen, Francesco Turro, Valentina Amitrano, Francesco Pederiva
Summary: This work proposes a readout classification method for superconducting qubits based on a neural network pretrained with an autoencoder approach. The pretrained-network inner-layer values are used to perform a classification of the inputs in a supervised manner, enhancing the classification performance.
PHYSICAL REVIEW APPLIED
(2023)
Article
Multidisciplinary Sciences
Connor Bybee, Denis Kleyko, Dmitri E. Nikonov, Amir Khosrowshahi, Bruno A. Olshausen, Friedrich T. Sommer
Summary: This article introduces Ising machines as a prominent approach to solving combinatorial optimization problems on parallel hardware. The authors demonstrate that higher-order Ising machines can be more resource-efficient and provide better solutions compared to traditional second-order Ising machines.
NATURE COMMUNICATIONS
(2023)
Article
Instruments & Instrumentation
H. Flemming, H. Deppe, P. Wieczorek
Summary: The GSI electronics department is currently developing a set of highly integrated read out ASICs with a common digitising and data acquisition back end but different front ends. These ASICs focus on reading out detectors with a large dynamic range. Possible applications include the electromagnetic calorimeter of the PANDA detector or the GEM TPC of the Super-FRS at FAIR.
JOURNAL OF INSTRUMENTATION
(2022)
Article
Engineering, Multidisciplinary
Jose Antonio Hidalgo-Lopez
Summary: This paper introduces and analyzes a novel direct interface circuit (DIC) that directly connects differential resistive and capacitive sensors to digital processors (DPs), performing a magnitude-to-time-to-digital conversion of the information they provide. The new circuit requires only one time measurement process, saving time and energy dissipation and reducing the number of error sources. Measurement times in the order of 1.1-1.3 ms have been obtained with this configuration, and the errors in the readout of the sensors are below 0.34% and 0.63% for a differential resistive sensor and a differential capacitive sensor, respectively.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Biomedical
Mengying Yan, Lulu Wang, Yiyong Wu, Liping Wang, Yi Lu
Summary: Biomimetic brain structures and artificial neural networks have provided a simplified strategy for investigating the complex characteristics of neural networks. Three-dimensional cell culture methods can mimic cell-cell interactions and help understand the function of neurons and neuronal networks. However, the fabrication of 3D scaffolds similar to the natural extracellular matrix has been a challenge. In this study, we developed a simplified and low-cost strategy to fabricate highly porous and cytocompatible hydrogel scaffolds for constructing 3D neural networks.
ACTA BIOMATERIALIA
(2023)
Article
Engineering, Electrical & Electronic
N. Karkour, V Alaphilippe, J. Collado, N. Dosme, L. Gibelin, V Gonzalez, X. Grave, J. Jacob, X. Lafay, E. Legay, D. Linget, A. Pullia, M. Quenez, D. Sidler, N. Tessier, G. Vinther-Jorgensen
Summary: The AGATA multidetector spectrometer utilizes advanced technology for precise study of exotic nuclear matter and super-heavy nuclei. With 180 high-purity germanium detectors segmented into 38 parts, it can measure gamma-ray energies with very high resolution at a high counting rate. Data is transferred to a control and processing module to reduce data rate before being sent to a computer farm for further analysis.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Saeed Khan, Bryce A. Primavera, Jeff Chiles, Adam N. McCaughan, Sonia M. Buckley, Alexander N. Tait, Adriana Lita, John Biesecker, Anna Fox, David Olaya, Richard P. Mirin, Sae Woo Nam, Jeffrey M. Shainline
Summary: Superconducting optoelectronic synapses with analogue weighting and temporal leaky integration can be created by integrating superconducting nanowire single-photon detectors with Josephson junctions. This hardware offers a wide range of time constants and is responsive to high spike rates.
NATURE ELECTRONICS
(2022)
Article
Instruments & Instrumentation
H. Sun, Q. Sun, S. Biereigel, R. Francisco, D. Gong, G. Huang, X. Huang, S. Kulis, P. Leroux, C. Liu, T. Liu, T. Liu, P. Moreira, J. Prinzie, J. Wu, J. Ye, L. Zhang, W. Zhang
Summary: This article presents the test results of a low jitter Phase Locked Loop (PLL) prototype chip for the CMS Endcap Timing Layer readout chip (ETROC). The chip is based on an improved version of the 1jCDR clock synthesis circuit and features an automatic frequency calibration (AFC) module. It has undergone extensive testing, including Total Ionizing Dose (TID) testing and Single Event Upset (SEU) testing with heavy ions.
JOURNAL OF INSTRUMENTATION
(2022)
Article
Instruments & Instrumentation
H. Sun, D. Gong, C. Edwards, G. Huang, X. Huang, C. Liu, T. Liu, J. Olsen, Q. Sun, J. Wu, J. Ye, L. Zhang, W. Zhang
Summary: This paper presents the implementation and verification of an in-pixel automatic threshold calibration circuit for the CMS Endcap Timing Layer in the High-Luminosity LHC upgrade. The circuit features improvements in operating time and usability, along with Triple Modular Redundancy and Single Event Effects simulation for verification. The calibration process is efficient, lasting 35 ms with low power consumption estimates in a 65 CMOS technology implementation.
JOURNAL OF INSTRUMENTATION
(2021)
Article
Engineering, Electrical & Electronic
Aashu Jha, Chaoran Huang, Thomas Ferreira deLima, Hsuan-Tung Peng, Bhavin Shastri, Paul R. Prucnal
Summary: The demands for bandwidth and energy in neural networks have sparked interest in developing novel neuromorphic hardware, including photonic integrated circuits. However, the channel count of photonic systems is limited by the devices within, affecting the overall throughput and feasibility of high-dimensional input applications. Experimental demonstrations show that photonic crystal nanobeam based synapses can overcome this limitation and increase data throughput, enabling applications such as natural language processing and high-resolution image processing. Additionally, the smaller physical footprint and higher energy efficiency of these synapses offer a path towards realizing highly scalable photonic neural networks.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Computer Science, Artificial Intelligence
Alejandro Moran, Vincent Canals, Fabio Galan-Prado, Christian F. Frasser, Dhinakar Radhakrishnan, Saeid Safavi, Josep L. Rossello
Summary: Edge artificial intelligence is a growing research field, and reservoir computing has attracted attention as a feasible alternative for edge intelligence. This study proposes a simple hardware-optimized circuit design for low-power edge intelligence applications and demonstrates its implementation in FPGA for low-power audio event detection. The results show significant accuracy and ultra-low energy consumption for the proposed approach.
COGNITIVE COMPUTATION
(2023)
Article
Instruments & Instrumentation
K. Hu, X. Cheng, Y. Shao, L. Yuan
Summary: The compact and multi-functional front-end readout electronics system for a SiPM based PET detector is developed based on the latest SDM circuit. The system includes analog and digital boards for charge integration and data transferring respectively. The system has demonstrated good performance for PET application with improved input signal polarity and dual functionality.
JOURNAL OF INSTRUMENTATION
(2021)
Article
Instruments & Instrumentation
W. M. Zabolotny, A. P. Byszuk, D. Dementev, D. Emschermann, M. Guminski, M. Kruszewski, P. Miedzik, K. Pozniak, R. Romaniuk, C. J. Schmidt, M. Shitenkov
Summary: The GBTX ASIC serves as a standard solution for fast control and data readout for radiation detectors in HEP experiments, but faces export control restrictions due to its use of radiation-hard technology. To address this issue, an FPGA-based GBTX emulator has been developed. It maintains basic compatibility with standard GBT-based systems and provides a solution for developing GBT-based readout chains for less demanding experiments.
JOURNAL OF INSTRUMENTATION
(2021)
Article
Surgery
Selma Benito-Martinez, Marta Rodriguez, Francisca Garcia-Moreno, Barbara Perez-Kohler, Estefania Pena, Begona Calvo, Gemma Pascual, Juan Manuel Bellon
Summary: This study compared the biological and mechanical behavior of two self-fixing meshes to that of a mesh fixed with tissue adhesive in a preclinical model of abdominal hernia repair in rabbits. The results showed that the self-fixing meshes exhibited better host tissue incorporation, macrophage response, and tensile strength compared to the adhesive mesh.
Article
Engineering, Electrical & Electronic
O. J. Cinco-Izquierdo, C. A. de la Cruz-Blas, M. T. Sanz-Pascual
Summary: In this paper, a novel pseudo-differential low-transconductance amplifier based on the bootstrapping technique is proposed. The transconductor is implemented using two voltage follower topologies as amplifiers, and their outputs are connected to both terminals of a resistor to bootstrap the voltages and increase the equivalent resistance value. This design achieves a very low transconductance without the need for large passive components. The experimental results show that the tunable transconductance of the amplifier is in the range of tens of nA/V, with a total harmonic distortion lower than -40dB at 350mVpp@1kHz. The power consumption of the amplifier is 4 mu W under a 1.8V supply voltage.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jonathan Bould, Michael G. S. Londesborough, Miroslava Litecka, Ramon Macias, Suzanne L. Shea, Thomas D. McGrath, William Clegg, John D. Kennedy
Summary: High yields of novel macropolyhedral selenaboranes have been synthesized and characterized. These selenaboranes exhibit unique structural features, including different numbers of vertices, connectivity between subclusters, and the presence of special structural motifs within the subclusters.
INORGANIC CHEMISTRY
(2022)
Article
Engineering, Biomedical
I Cabeza-Gil, B. Calvo, A. Rico, C. Reinhards-Hervas, J. Rodriguez
Summary: The mechanical behavior of hydrophilic and hydrophobic acrylates has been characterized using depth sensing indentation. Time-dependent behavior has been studied through load-relaxation tests. Finite element software and a visco-hyperelastic material model were used to simulate the experiments, with the model parameters determined using deep learning techniques. The developed material models were applied to mechanically simulate a standard compression test of a prototype intraocular lens.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Food Science & Technology
L. Astrain-Redin, J. Moya, M. Alejandre, E. Beitia, J. Raso, B. Calvo, G. Cebrian, I Alvarez
Summary: The study showed that regulating the electrode temperature can reduce temperature differences, increase the uniformity of heat treatment, and improve microbial inactivation effectiveness.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Lara Gil-Melgosa, Jorge Grasa, Ainhoa Urbiola, Rafael Llombart, Miguel Susaeta Ruiz, Veronica Montiel, Cristina Ederra, Begona Calvo, Mikel Ariz, Purificacion Ripalda-Cemborain, Felipe Prosper, Carlos Ortiz-de-Solorzano, Juan Pons-Villanueva, Ana Perez Ruiz
Summary: This study investigates the morphological changes in the tendon, the myotendinous junction, and muscle belly after Achilles tendon rupture in a mouse model. The findings reveal cellular and fatty infiltration, fibrotic tissue accumulation, muscle stem cell decline, and collagen fiber disorganization, which contribute to the loss of muscle mechanical function. This research is important for improving regenerative medicine practices for Achilles tendon ruptures.
Article
Engineering, Electrical & Electronic
J. Perez-Bailon, M. T. Sanz-Pascual, B. Calvo, N. Medrano
Summary: In this letter, a fully integrated configurable front-end for Impedance Spectroscopy (IS) is introduced. The circuit features fully differential in-phase and quadrature channels and provides high performance, compact topology, and low noise.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Biotechnology & Applied Microbiology
Elena Redaelli, Jorge Grasa, Begona Calvo, Jose Felix Rodriguez Matas, Giulia Luraghi
Summary: Understanding the mechanical properties of the cornea is important for studying corneal pathologies and predicting outcomes of refractive surgery. Non-Contact Tonometry (NCT) is a non-invasive diagnostic tool that characterizes the corneal tissue response by applying a defined air-pulse. This paper develops a high-fidelity finite-element model of an idealized 3D eye for in silico NCT and performs a sensitivity analysis to examine the influence of intraocular pressure and structural material parameters on corneal deformation biomarkers.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Mina Karami, Hassan Zohoor, Begona Calvo, Jorge Grasa
Summary: This paper aims to develop a multi-scale chemo-mechanical material model to consider the active behavior of skeletal muscle in 3D geometries. Realistic muscle geometries and other tissues of the human abdomen were considered and an iterative algorithm was implemented to find the initial stress state that achieve the equilibrium of them with the intra-abdominal pressure. The calculated increase of intra-abdominal pressure by the model is consistent with reported experimental results, indicating the functionality of the proposed model.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Jonathan Bould, Michael G. S. Londesborough, Jiri Brus, Oleg Tok, Pablo J. Sanz Miguel, Ramon Macias
Summary: The [PSH](+) decaborane salt can react with ethanol to form [PSH][B9H14], providing a simple method for synthesizing the arachno-nonaborate anion. The properties of the new polyhedral salt are characterized using NMR spectroscopy and X-ray diffraction. DFT calculations reveal insights into the low-energy dynamic behavior involving hydrogen atoms.
INORGANIC CHEMISTRY
(2023)
Article
Computer Science, Information Systems
Andres Serrano-Reyes, Maria Teresa Sanz-Pascual, Belen Calvo-Lopez
Summary: This paper proposes a novel LDO regulator design that addresses the trade-off between dynamic performance, power consumption, and area efficiency. The proposed design improves the gain bandwidth product and stability of the regulator and reduces overshoot and undershoot during load transients without additional steady-state power consumption. The post-layout simulations confirm the robustness of the proposed design, achieving good load and line regulating performance with reduced undershoot and overshoot at minimum power and area consumption.
Article
Engineering, Chemical
E. Hernandez-Alhambra, P. Guiu, I. Cabeza-Gil, A. Ferrer-Mairal, M. A. Martinez, B. Calvo, J. Grasa, M. L. Salvador
Summary: This study explores the contribution of cooking procedures to energy efficiency and develops a model based on experimental data to predict cooking outcomes. The model takes into account factors such as water evaporation and hamburger shrinkage, accurately predicts temperature, moisture loss, shrinkage, and the effects on the final water content.
JOURNAL OF FOOD ENGINEERING
(2024)
Proceedings Paper
Engineering, Electrical & Electronic
F. Montalvo-Galicia, M. T. Sanz-Pascual, P. Rosales-Quintero, M. Moreno-Moreno
Summary: A parameter extraction method for the two-diode model of solar cells based on the I-V characteristic is proposed, which is implemented in Octave and shows better accuracy in predicting the maximum power point of solar cells compared to other existing methods.
2022 IEEE 65TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS 2022)
(2022)