Meet KAUST prospective student: Adilya Bakambekova 1 min read · Wed, Jun 3 2020 News electronics electrical engineering She loves watching films not for the plot, but in order to rethink her beliefs. She is 22, she graduates from the School of Engineering in the capital. Adilya Bakambekova may seem ordinary: she loves walking in the park, powerlifting, taking care of her five-year-old wiener dog.
Fully Integrated Organic Field‐Effect Transistor Platform to Detect and to Quantify NO2 Gas 1 min read · Sun, May 31 2020 News PDVT10 parylene C encapsulation gas sensors integrated NO2 gas detector organic field effect transistors Gas Sensors Saravanan Yuvaraja, et al.,"Fully Integrated Organic Field‐Effect Transistor Platform to Detect and to Quantify NO2 Gas." physica status solidi (RRL)–Rapid Research Letters, 2020, 2000086. Herein, the gas sensing characteristics of PDVT‐10 organic field‐effect transistor (OFET) devices are explored and integrated to build a compact analog‐to‐digital converter (ADC) gas detection system. The electrical characteristics of the pristine PDVT‐10 OFET exhibit I on/I off ratio and threshold voltage as 104 and −12 V, respectively. Through the coating of a metal‐organic framework (MOF) on the surface
Organic Field-Effect Transistor-Based Flexible Sensors 1 min read · Wed, May 20 2020 News OFETs Flexible electronic devices Circuits oscs Saravanan Yuvaraja et al., "Organic Field-Effect Transistor-Based Flexible Sensors" Chemical Society Reviews 2020, (Advanced Article). (12) 49, 2020, 3423. Flexible electronic devices have attracted a great deal of attention in recent years due to their flexibility, reduced complexity and lightweight. Such devices can conformably attach themselves to any bendable surface and can possess diverse transduction mechanisms. Consequently, with continued emphasis on innovation and development, major technological breakthroughs have been achieved in this area. This review focuses on the advancements
EANN: Energy Adaptive Neural Networks 1 min read · Tue, May 5 2020 News Circuits truncated accumulation neuron skipping computation skipping FPGA Salma Hassan, et al., "EANN: Energy Adaptive Neural Networks." Electronics 9 (5), 2020, 746. This paper proposes an Energy Adaptive Feedforward Neural Network (EANN). It uses multiple approximation techniques in the hardware implementation of the neuron unit. The used techniques are precision scaling, approximate multiplier, computation skipping, neuron skipping, activation function approximation and truncated accumulation. The proposed EANN system applies the partial dynamic reconfiguration (PDR) feature supported by the FPGA platform to reconfigure the hardware elements of the neural network
Exciting New Technology Makes BPA Water Testing More Efficient 1 min read · Fri, May 1 2020 News Water pollution sensors Plastic LSG In today’s world, it should come as no surprise that plastic dominates the products that we rely on each and every day. From our technology devices, to our water bottles, plastic is almost always an integral structural component.
Early warning sensor sniffs out cities' harmful gas 1 min read · Tue, Apr 28 2020 News sensors pollution electrical engineering An integrated detector device could form the basis of a distributed air-quality sensor network.
Fully Integrated Indium Gallium Zinc Oxide NO2 Gas Detector 1 min read · Fri, Apr 24 2020 News thin film transistor TFT Gas Sensors IGZO based toxic gas detection system NO2 Mani Teja Vijjapu, et al.,"Fully Integrated Indium Gallium Zinc Oxide NO2 Gas Detector." ACS Sensors 5 (4), 2020, 984. We report an amorphous indium gallium zinc oxide (IGZO)-based toxic gas detection system. The microsystem contains an IGZO thin-film transistor (TFT) as a sensing element and exhibits remarkable selectivity and sensitivity to low concentrations of nitrogen dioxide (NO 2). In contrast to existing metal oxide-based gas sensors, which are active either at high temperature or with light activation, the developed IGZO TFT sensor is operable at room temperature and requires only
Realization of an Ultrasensitive and Highly Selective OFET NO2 Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF 1 min read · Fri, Apr 24 2020 News OFET NO2 gas sensor organic semiconductor Gas Sensors MOFs Saravanan Yuvaraja, et al., "Realization of an Ultrasensitive and Highly Selective OFET NO2 Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF." ACS Applied Materials & Interfaces 12 (16), 2020, 18748. Organic field-effect transistors (OFETs) are emerging as competitive candidates for gas sensing applications due to the ease of their fabrication process combined with the ability to readily fine-tune the properties of organic semiconductors. Nevertheless, some key challenges remain to be addressed, such as material degradation, low sensitivity, and poor selectivity toward
A label-free Aptasensor FET Based on Au Nanoparticle Decorated Co3 O4 Nanorods and a SWCNT Layer for Detection of Cardiac Troponin T Protein 1 min read · Mon, Apr 20 2020 News cardiac troponin proteins Biosensors biomarkers FET Sandeep G. Surya, et al., "A label-free Aptasensor FET Based on Au Nanoparticle Decorated Co3 O4 Nanorods and a SWCNT Layer for Detection of Cardiac Troponin T Protein." Journal of Materials Chemistry B 8, 2020, 18. Acute myocardial infarction (AMI) is a serious health problem that must be identified in its early stages. Considerable progress has been made in understanding the condition of AMI through ascertaining the role of biomarkers, such as myoglobin, cardiac troponin proteins (T and I), creatine kinase-MB, and fatty acid-binding protein (FABP). A field-effect transistor (FET) is an
Sensing a heart attack before it strikes 1 min read · Tue, Apr 14 2020 News human health sensors electrical engineering Nanomaterial-based electronic device monitors a key heart health biomarker.
One-step Electrosynthesized Molecularly Imprinted Polymer on Laser Scribed Graphene Bisphenol A Sensor 1 min read · Sat, Apr 11 2020 News Electrochemical Sensors bisphenol a MIPs LSG Tutku Beduk, et al., "One-step Electrosynthesized Molecularly Imprinted Polymer on Laser Scribed Graphene Bisphenol A Sensor." Sensors and Actuators B: Chemical 314, 2020, 128026. Bisphenol A (BPA) is a toxic chemical used by industries for production of containers for storage of food and beverages leading to possible health risks. In this work, we present a simple, mask-free, low-cost imprinted sensor based on laser scribed graphene (LSG) technology combined to molecularly imprinted polymers (MIPs) for BPA determination. CO2 laser was used in production of LSG electrodes with high
Saudi researcher’s magnetic skin research garners widespread attention 1 min read · Tue, Apr 7 2020 News magnetic skin energy harvesting sensors Imagine if there was a revolutionary wearable technology that could enable the user to open doors or operate machinery with a simple wave of their hand or a mere blink of their eye? What people might not realize is that this contact-free human-machine technology already exists—and it has been developed right here in a laboratory at KAUST.
The power of light for internet of underwater things 1 min read · Thu, Mar 19 2020 News underwater sensor IoT Light can simultaneously transfer energy and data to underwater devices, but there’s a long way to go before these systems can be deployed.
Ultra miniaturized InterDigitated electrodes platform for sensing applications 1 min read · Sun, Mar 15 2020 News Comsol Multiphysics Circuits IDEs ICDS Z. Wang, et al., "Ultra miniaturized InterDigitated electrodes platform for sensing applications." Microelectronic Engineering 225, 2020, 111253. InterDigitated Electrodes (IDEs) is a generic platform for a wide range of diverse applications with their implementation in sensing modules being a major one. We propose the use of IDCs with deep sub-micron critical dimension; equally spaced electrodes of 200 nm width for enhanced sensing performance and also the method of fabrication thereof. The transducer configuration was studied theoretically with a finite element method simulation by using
A Paper-based Inkjet-printed PEDOT: PSS/ZnO Sol-gel Hydrazine Sensor 1 min read · Sun, Mar 1 2020 News inkjet printed devices Electrochemical Sensors inkjet printing technologies hydrazine sensor Tutku Beduk, et al., "A Paper-based Inkjet-printed PEDOT: PSS/ZnO Sol-gel Hydrazine Sensor." Sensors and Actuators B: Chemical 306, 2020, 127539. Hydrazine is widely used in industries as a precursor for blowing agents, pharmaceuticals, and pesticides. It is a highly toxic compound; therefore, it is of paramount interest to develop new analytical methods for the detection and control of hydrazine exposure. In this work, we describe the fabrication of an all inkjet-printed paper sensor composed of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) electrode functionalized with
A Dual-Mode Nested Rectifier for Ambient Wireless Powering in CMOS Technology 1 min read · Tue, Feb 11 2020 News rectifier nested radio frequency Circuits wireless powering Abdullah Almansouri, et al., "A Dual-Mode Nested Rectifier for Ambient Wireless Powering in CMOS Technology." IEEE Transactions on Microwave Theory and Techniques, 68 (5) , 2020, 1754. This article proposes (DM) nested radio frequency (RF) rectifier for ambient wireless powering. The proposed architecture utilizes a DM nested feedback circuit to enhance the conductivity of the rectifier at low power while reducing the reverse leakage current at high power by generating supply voltages at the gates of the pMOS rectifying transistors. The proposed rectifier is fabricated in a 65-nm CMOS
Fully Transparent Transceiver Using Single Binary Oxide Thin Film Transistors 1 min read · Mon, Feb 3 2020 News thin film transistor TFT Single Binary Oxide Circuits Ali Hassan, et al., "Fully Transparent Transceiver Using Single Binary Oxide Thin Film Transistors." Advanced Electronic Materials 6, 2020, 1901083. Using one binary oxide, a fully transparent thin‐film transistor (TFT)‐based transceiver circuit is presented. The proposed transceiver circuit is fabricated entirely using an atomic layer deposition process. Moreover, the proposed circuit presents two modulation schemes: frequency shift keying and ON/OFF keying. The fabricated TFTs exhibit saturation mobility, threshold voltage, a subthreshold swing, and an ON/OFF ratio of 18.2 cm 2 V− 1 s− 1, 0
Scattering theory and cancellation of gravity-flexural waves of floating plates 1 min read · Tue, Jan 28 2020 News flexural waves linearized water waves sixth order partial differential equation Circuits thin elastic plates scattering Mohamed Farhat, et al., "Scattering theory and cancellation of gravity-flexural waves of floating plates." Physical Review B, 101 (1), 2020, 014307. We combine theories of scattering for linearized water waves and flexural waves in thin elastic plates to characterize and achieve control of water wave scattering using floating plates. This requires manipulating a sixth-order partial differential equation with appropriate boundary conditions of the velocity potential. Making use of multipole expansions, we reduce the scattering problem to a linear algebraic system. The response of a floating
Toward Self-Powered Internet of Underwater Things Devices 1 min read · Mon, Jan 27 2020 News Circuits SLIPT IoT optical connectivity IoUT devices Jose de Oliveira, et al., "Toward Self-Powered Internet of Underwater Things Devices." IEEE Communications Magazine 58 (1), 2020, 68. Exploiting light beams to carry information and deliver power is suggested as a potential technology to recharge batteries in future generations of IoT and IoUT devices while providing optical connectivity. SLIPT has been recently proposed as an efficient method of wireless power transfer between communicating terminals. In this article, we provide an overview of the various SLIPT techniques in the time, power, and space domains. We also demonstrate two SLIPT
A Self-Powered Magneto-Acoustic Tracking Transducer 1 min read · Wed, Jan 15 2020 News acoustic transmitter Circuits tracking applications Acoustic telemetry Almansouri, Abdullah S., et al. "A Self-Powered Magneto-Acoustic Tracking Transducer." (2020). Acoustic telemetry is widely used for many tracking applications. Objects or subjects are tracked by attaching an acoustic transmitter onto them or having them wear them. The acoustic signal is then detected by different microphones to determine the location of the tagged target. The size and the weight of the tag determine the size of the target that can be tracked. In the case of small-sized tags, about 80% of the volume is consumed by the battery and electronics, while less than 20% by the actual
Methanol and Humidity Capacitive Sensors Based on Thin Films of MOF Nanoparticles 1 min read · Tue, Jan 7 2020 News Methanol MOF Nanoparticles thin films Gas Sensors Humidity Capacitive Sensors Miguel Andrés, et al., "Methanol and Humidity Capacitive Sensors Based on Thin Films of MOF Nanoparticles." ACS Applied Materials & Interfaces 12 (3) ,2020, 4155. The successful development of modern gas sensing technologies requires high sensitivity and selectivity coupled to cost effectiveness, which implies the necessity to miniaturize devices while reducing the amount of sensing material. The appealing alternative of integrating nanoparticles of a porous metal–organic framework (MOF) onto capacitive sensors based on interdigitated electrode (IDE) chips is presented. We report the
Blue Energy Fuels: Converting Ocean Wave Energy to Carbon-based Liquid Fuels via CO2 Reduction 1 min read · Wed, Jan 1 2020 News Circuits Siu-Fung Leung, et al., "Blue Energy Fuels: Converting Ocean Wave Energy to Carbon-based Liquid Fuels via CO2 Reduction." Energy & Environmental Science, 2020. Sequestering CO2 in the form of carbon-based liquid fuels would provide both a convenient and sustainable form of energy for practical use as well as mitigate the effects of global warming and climate change. Ocean wave energy is an abundant and relatively stable source of renewable energy, which would be highly desirable for the conversion of CO2 to conveniently stored and transported liquid fuels. In this work, we demonstrate a wave
A Chitosan Gold Nanoparticles Molecularly Imprinted Polymer Based Ciprofloxacin Sensor 1 min read · Wed, Jan 1 2020 News Electrochemical Sensors ciprofloxacin sensor Biosensors molecularly imprinted polymer Sandeep G. Surya, et al., "A Chitosan Gold Nanoparticles Molecularly Imprinted Polymer Based Ciprofloxacin Sensor." RSC Advances 10 (22), 2020, 12823. In this work, we present a novel study on the development of an electrochemical biomimetic sensor to detect the ciprofloxacin (CIP) antibiotic. A chitosan gold nanoparticles decorated molecularly imprinted polymer (Ch-AuMIP) was used to modify the glassy carbon electrode (GCE) for preparation of the sensor. The Ch-AuMIP was characterized to understand various properties like chemical composition, morphology, roughness, and conduction using
Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor 1 min read · Wed, Jan 1 2020 News plasmonic structure Circuits spectrometer-free refractive index sensor Li Zhang, et al., "Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor." Sensors 20 (8), 2020, 2347. We propose a spectrometer-free refractive index sensor based on a graphene plasmonic structure. The spectrometer-free feature of the device is realized thanks to the dynamic tunability of graphene’s chemical potential, through electrostatic biasing. The proposed sensor exhibits a 1566 nm/RIU sensitivity, a 250.6 RIU− 1 figure of merit in the optical mode of operation and a 713.2 meV/RIU sensitivity, a 246.8 RIU− 1 figure of merit in the electrical mode of operation. This
Organic field effect transistors (OFETs) in environmental sensing and health monitoring: A review 1 min read · Tue, Dec 3 2019 News Sensitivity Stability Biosensors Gas Sensors Gamma irradiation VOCs OFETs Selectivity Sandeep G. Surya, et al., "Organic Field Effect Transistors (OFETs) in Environmental Sensing and Health Monitoring: A review, Trends in Analytical Chemistry 111, 2019, 27. Abstract: Organic field effect transistors (OFETs) have been the focus of sensing application research during the last two decades. In comparison to their inorganic counterparts, OFETs have multiple advantages such as low-cost manufacturing, large area coverage, flexibility, and readily tunable electronic material properties. To date, various organic semiconductors (OSCs), both polymers and small molecules, have been
All‐Oxide Thin Film Transistors and Rectifiers Enabling On‐Chip Capacitive Energy Storage 1 min read · Sun, Dec 1 2019 News ZnO channels atomic layer deposition Thin Film Transistors Rectifiers On‐Chip Capacitive Energy Storage Wang Zhenwei, et al., "All‐Oxide Thin Film Transistors and Rectifiers Enabling On‐Chip Capacitive Energy Storage." Advanced Electronic Materials 5 (12), 2019, 1900531. All-oxide, fully-transparent thin film transistors and rectifiers, processed entirely by atomic layer deposition, have been developed for on-chip capacitive energy storage. Fully depleted thin film transistor (TFT) operation is achieved by optimizing the carrier concentration in the ZnO channels. The TFTs show an average saturation mobility of 10.5 cm2 V−1 s−1, a stable positive turn-on voltage of 0.88 V, a low subthreshold
Using electronics to solve common biological problems 1 min read · Sun, Dec 1 2019 News bioelectronics bioscience What do an electrical engineer, an organic chemist, a materials scientist and a cell biologist all have in common? They invent and improve applications at the interface of biology and electronics.
Photo-carrier Extraction by Triboelectricity for Carrier Transport Layer-free Photodetectors 1 min read · Fri, Nov 1 2019 News Circuits Vincent K. S. Hsiao, et al., "Photo-carrier Extraction by Triboelectricity for Carrier Transport Layer-free Photodetectors." Nano Energy 65, 2019, 103958. Efficient carrier extraction is essential for high performance optoelectronic devices, such as solar cells and photodetectors. Conventional strategies to separate photogenerated carriers typically involve the fabrication of a p-n junction by doping and the use of carrier selective charge transport layers. However, these techniques often require high temperature processes or costly materials. In this work, we demonstrate an innovative and
KAUSTat: A Wireless, Wearable, Open-Source Potentiostat for Electrochemical Measurements 1 min read · Sun, Oct 27 2019 News on-site sensing Emstat Bluetooth Low Energy hexacyanoferrate smartphone cyclic voltammetry curves wireless Wearable OpenSource Potentiostat Ahmad Rafiq, et al. "KAUSTat: A Wireless, Wearable, Open-Source Potentiostat for Electrochemical Measurements." 2019 IEEE SENSORS. IEEE 27, 2019, 1. Advanced technology is needed every day for wireless, wearable sensors/potentiostats to record real-time measurements and monitor the chemical processes and physiological signals of the human body. Most of the potentiostats present on the market work as “black boxes” without access to their internal structure and their limited information of circuitry makes it challenging to develop new measurement methods and further integration with other
KAUST Research Conference 2019: New Trends in Biosensors and Bioelectronics 1 min read · Tue, Aug 6 2019 News bioelectronics Biosensors nanoelectronics The “KAUST Research Conference on New Trends in Biosensors and Bioelectronics” was held in KAUST between the 25th and 27th of February. This yearly event aims to give an overview of the most recent efforts in bioelectronics that tackle the “interface” problem and overcome the limits of the current technologies by generating new materials/architectures/device components. With its truly interdisciplinary nature, this conference will bring scientists from different disciplines together, including Chemistry, Electrical Engineering, Biology, and Material Science, who are at the top of their
KAUST student wins global sensors and measurement systems competition 1 min read · Mon, Aug 5 2019 News sensing platforms prototyping embedded systems KAUST master's degree student José Ilton de Oliveira Filho recently won first place at the second edition of the IEEE International Sensors and Measurement Systems Student Contest (IEEE IS&M-SC). IEEE IS&M-SC is a global competition directed at teams of advanced undergraduates, master's degree and Ph.D. students and seeks to stimulate creative ideas for sensor and measuring systems applications.
Single-electrode material streamlines functions into a tiny chip 1 min read · Sun, Jul 28 2019 News sensors energy storage material science and engineering IoT Ruthenium oxide is used to integrate energy-storing microsupercapacitors and thin-film electronics at the transistor level.
A Precision, Energy-Efficient, Oversampling, Noise-Shaping Differential SAR Capacitance-to-Digital Converter 1 min read · Tue, Jun 25 2019 News Noise shaping capacitive sensors Circuits Abdulaziz Alhoshany, et al., "A Precision, Energy-Efficient, Oversampling, Noise-Shaping Differential SAR Capacitance-to-Digital Converter" IEEE Transactions on Instrumentation and Measurement, 68 (2), 2019, 392. This paper introduces an oversampling, noise-shaping differential successive-approximation-register capacitance-to-digital converter (CDC) architecture for interfacing capacitive sensors. The proposed energy-efficient CDC achieves high-precision capacitive resolution by employing oversampling and noise shaping. The switched-capacitor (SC) integrator is inserted between the comparator
A Comparison of Artificial Neural Network (ANN) and Support Vector Machine (SVM) Classifiers for Neural Seizure Detection 1 min read · Sun, Apr 28 2019 News Circuits Neural Seizure Detection Artificial Neural Network Biosensors Support Vector Machine Elgammal, M, et al., "A Comparison of Artificial Neural Network (ANN) and Support Vector Machine (SVM) Classifiers for Neural Seizure Detection". IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS) 2019, 646. In this paper, two different classifiers are software and hardware implemented for neural seizure detection. The two techniques are support vector machine(SVM) and artificial neural networks(ANN). The two techniques are pretrained on software and only the classifiers are hardware implemented and tested. A comparison of the two techniques is performed on the levels
An Imperceptible Magnetic Skin 1 min read · Sun, Apr 28 2019 News Circuits Flexible and wearable magnetoelectronics Abdullah S Almansouri, et al., "An Imperceptible Magnetic Skin." Advanced Materials Technologies 4 (10), 2019, 1900493. Flexible and wearable magnetoelectronics add intriguing new functionalities to natural perception. Of particular interest regarding these artificial skins are wireless sensing and touchless interactions. Biocompatibility and imperceptibility are the most significant features of devices attached to the bodies. A biocompatible magnetic skin is introduced. It offers extreme flexibility, stretchability (>300%), and is lightweight, while maintaining a remanent magnetization up to
Molybdenum trioxide (MoO3) Capacitive Soil Moisture Microsensor for In-situ Agriculture Applications: Measurement Studies and Temperature Effects 1 min read · Fri, Apr 26 2019 News Soil Moisture Microsensor Gas Sensors MoO3 In-situ Agriculture Applications Sandeep Surya, et al., " Molybdenum Trioxide (MoO3) Capacitive Soil Moisture Microsensor for In-situ Agriculture Applications: Measurement Studies and Temperature Effects". The soil moisture sensor is of utmost importance in agriculture due to issues including water conservation and disease prediction. This work presents the design and development of a molybdenum trioxide (MoO3) based capacitive soil moisture microsensor. The sensor comprises an inter-digitated electrode (IDE) on a silicon wafer and MoO3 is drop cast on IDE, which acts as the sensing film. IDE on Si wafer is mounted on the
Scattering Theory of Gravity-Flexural Waves of Floating Plates on Water 1 min read · Fri, Apr 26 2019 News Circuits Mohamed Farhat, et al., "Scattering Theory of Gravity-Flexural Waves of Floating Plates on Water". arXiv preprint arXiv:1901.09733. Phys. Rev. B 101, 2019, 014307. We combine theories of scattering for linearized water waves and flexural waves in thin plates to characterize and achieve control of water wave scattering using floating plates. This requires manipulating a sixth-order partial differential equation with appropriate boundary conditions of the velocity potential. Making use of multipole expansions, we reduce the scattering problem to a linear algebraic system. The response of a
Fluorinated MOF Platform for Selective Removal and Sensing of SO 2 from Flue Gas and Air 1 min read · Fri, Apr 26 2019 News Gas Sensors Fluorinated MOF SO2 Mohamad Tchalala, et al., " Fluorinated MOF Platform for Selective Removal and Sensing of SO 2 from Flue Gas and Air", Nature communications, 10(1), 2019, 1. Conventional SO2 scrubbing agents, namely calcium oxide and zeolites, are often used to remove SO2 using a strong or irreversible adsorption-based process. However, adsorbents capable of sensing and selectively capturing this toxic molecule in a reversible manner, with in-depth understanding of structure–property relationships, have been rarely explored. Here we report the selective removal and sensing of SO2 using recently unveiled
Scattering Cancellation-based Cloaking for the Maxwell-Cattaneo Heat Waves 1 min read · Fri, Apr 26 2019 News Circuits Maxwell-Cattaneo Heat Waves Scattering Cancellation-based Cloaking Mohamed Farhat, et al., "Scattering Cancellation-based Cloaking for the Maxwell-Cattaneo Heat Waves". Physical Review Applied, 11(4), 2019, 044089. We theoretically propose scattering cancellation-based cloaks for heat waves that obey the Maxwell-Cattaneo equation. The proposed cloaks possess carefully tailored diffusivity to cancel the dipole scattering from the object that they surround, and thus can render a small object invisible in the near and far fields, as demonstrated by full-wave finite-element simulations. Mantle heat cloaking is further analyzed and proposed to simplify the design
A MXene‐Based Wearable Biosensor System for High‐Performance In Vitro Perspiration Analysis 1 min read · Fri, Apr 26 2019 News MXene Biosensors Wearable Biosensor In Vitro Perspiration Analysis Yongjiu Lei, et al., "A MXene‐Based Wearable Biosensor System for High‐Performance In Vitro Perspiration Analysis". Small 15(19), 2019, 1901190. Wearable electrochemical biosensors for sweat analysis present a promising means for noninvasive biomarker monitoring. However, sweat‐based sensing still poses several challenges, including easy degradation of enzymes and biomaterials with repeated testing, limited detection range and sensitivity of enzyme‐based biosensors caused by oxygen deficiency in sweat, and poor shelf life of sensors using all‐in‐one working electrodes patterned by traditional
Recent progress and perspectives of gas sensors based on vertically oriented ZnO nanomaterials 1 min read · Fri, Apr 26 2019 News Rafiq Ahmad, et al., "Recent Progress and Perspectives of Gas Sensors Based on Vertically Oriented ZnO Nanomaterials". Advances in Colloid and Interface Science 270, 2019, 1. Vertically oriented zinc oxide (ZnO) nanomaterials, such as nanorods (NRs), nanowires (NWs), nanotubes (NTs), nanoneedles (NNs), and nanosheets (NSs), are highly ordered architectures that provide remarkable properties for sensors. Furthermore, these nanostructures have fascinating features, including high surface-area-to-volume ratios, high charge carrier concentrations, and many surface-active sites. These features make
Integration of Electrochemical Microsupercapacitors with Thin Film Electronics for On‐Chip Energy Storage 1 min read · Fri, Apr 26 2019 News Electrochemical Sensors on‐chip energy‐storage units self‐powered electronic systems Mrinal K. Hota, et al., "Integration of Electrochemical Microsupercapacitors with Thin Film Electronics for On‐Chip Energy Storage". Advanced Materials 31(25), 2019, 1807450. The development of self‐powered electronic systems requires integration of on‐chip energy‐storage units to interface with various types of energy harvesters, which are intermittent by nature. Most studies have involved on‐chip electrochemical microsupercapacitors that have been interfaced with energy harvesters through bulky Si‐based rectifiers that are difficult to integrate. This study demonstrates transistor‐level
On‐Chip Energy Storage: Integration of Electrochemical Microsupercapacitors with Thin Film Electronics for On‐Chip Energy Storage (Adv. Mater. 25/2019) 1 min read · Fri, Apr 26 2019 News Thin Film Electronics Electrochemical Sensors On‐Chip Energy Storage Mrinal K. Hota, et al., "Integration of Electrochemical Microsupercapacitors with Thin Film Electronics for On‐Chip Energy Storage". Advanced Materials 31 (25), 2019, 1807450. In article number 1807450, Khaled N. Salama, Husam N. Alshareef, and co‐workers describe the integration of on‐chip electrochemical microsupercapacitors with thin‐film electronics at the transistor level using a single electrode material (RuO2) for both. The functionality of the integrated devices is successfully demonstrated using alternating signals, which are properly stored, and used to power several electronic
Synthesis and Optimization of Fractional-order Elements Using a Genetic Algorithm 1 min read · Fri, Apr 26 2019 News Genetic Algorithm Circuits Aslihan Kartci, et al., "Synthesis and Optimization of Fractional-order Elements Using a Genetic Algorithm". IEEE Access 7, 2019, 80233. This study proposes a new approach for the optimization of phase and magnitude responses of fractional-order capacitive and inductive elements based on the mixed integer-order genetic algorithm (GA), over a bandwidth of four-decade, and operating up to 1 GHz with a low phase error of approximately ±1 ◦ . It provides a phase optimization in the desired bandwidth with minimal branch number and avoids the use of negative component values, and any complex
An Ultra-Area-Efficient 1024-Point In-Memory FFT Processor 1 min read · Fri, Apr 26 2019 News FFT Circuits Hasan E. Yantir, et al., "An Ultra-Area-Efficient 1024-Point In-Memory FFT Processor", Micromachines, 10 (8), 2019, 509. Current computation architectures rely on more processor-centric design principles. On the other hand, the inevitable increase in the amount of data that applications need forces researchers to design novel processor architectures that are more data-centric. By following this principle, this study proposes an area-efficient Fast Fourier Transform (FFT) processor through in-memory computing. The proposed architecture occupies the smallest footprint of around 0.1 mm2 inside
A Comparison of Artificial Neural Network(ANN) and Support Vector Machine(SVM) Classifiers for Neural Seizure Detection 1 min read · Thu, Apr 25 2019 News Elgammal, M. A., Mostafa, H., Salama, K. N., & Mohieldin, A. N. (2019, August). A Comparison of Artificial Neural Network (ANN) and Support Vector Machine (SVM) Classifiers for Neural Seizure Detection. In 2019 IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS) (pp. 646-649). IEEE. In this paper, two different classifiers are software and hardware implemented for neural seizure detection. The two techniques are support vector machine(SVM) and artificial neural networks(ANN). The two techniques are pretrained on software and only the classifiers are hardware implemented
Trianglamine Hydrochloride Crystals for a Highly Sensitive and Selective Humidity Sensor 1 min read · Thu, Apr 25 2019 News Trianglamine Hydrochloride Crystals Gas Sensors Humidity Sensor Karumbaiah N. Chappanda, et al., "Trianglamine Hydrochloride Crystals for a Highly Sensitive and Selective Humidity Sensor", Sensors and Actuators B: Chemical 294, 2019, 40. In this work, we present a highly sensitive and selective capacitive humidity sensor. Trianglamine hydrochloride is used as the sensing material, which is synthesized by a cyclocondensation reaction between terpthaldehyde and 1R,2R-cyclohexanediamine followed by addition of hydrochloric acid and vapor diffusion of acetone. The crystalline trianglamine hydrochloride salts are dispersed in acetonitrile and then coated
FPGA Implementation of Dynamically Reconfigurable IoT security Module Using Algorithm Hopping 1 min read · Thu, Apr 25 2019 News IoT security Module Circuits Algorithm Hopping FPGA Shady Soliman, et al., "FPGA Implementation of Dynamically Reconfigurable IoT security Module Using Algorithm Hopping." Integration 68, 2019, 108. Internet of Things (IoT) is a promising technology that is continuously spreading around the world leading to many challenges facing cryptographic designers who are trying to fulfill the security standards of IoT constrained devices. In this work, a new design is proposed that adds a new dimension of security by using the concept of frequency hopping to generate a pseudo-random pattern for switching between 5 lightweight cryptographic ciphers: AEGIS
Wearable Electronics: An Imperceptible Magnetic Skin (Adv. Mater. Technol. 10/2019) 1 min read · Thu, Apr 25 2019 News Biosensors sensing solutions wearable magnetic skin remote operation Abdullah S. Almansouri, et al., "Wearable Electronics: An Imperceptible Magnetic Skin (Adv. Mater. Technol. 10/2019)." Advanced Materials Technologies 4 (10), 2019, 1970052. In article number 1900493 by Abdullah S. Almansouri, Jurgen Kosel, and co‐workers, a wearable magnetic skin provides remote operation and sensing solutions without the need for wires, on‐chip batteries, etc. Versatile in color and shape and extremely flexible, it can be imperceptible or eye‐catching and paves the way for numerous applications, such as tracking eye movements or contact‐free user‐machine interfaces.
Non-invasive IoT Sensing and Monitoring System for Neonatal Care 1 min read · Thu, Apr 25 2019 News José Ilton de Oliveira Filho, et al., "Non-invasive IoT Sensing and Monitoring System for Neonatal Care." 2019 31st International Conference on Microelectronics (ICM). IEEE, 2019. 90 The scientific innovation in health systems moves towards non-invasive and wearable approaches to acquire and measure vital signs. Due to its non-invasive nature, infrared (IR) thermography has become the preferred choice for monitoring physiological signals from a distance. Combining IR non-invasive monitoring with the Internet of Things (IoT), we developed a risk management system for neonatal incubators, which
