News

April 2019

• MOFs can sense and sort troublesome gases

  1 min read · Wed, Apr 17 2019

  News

  sensors chemical science electrical engineering gas monitoring MOFs

  Fluorinated metal-organic frameworks make excellent materials for selective sensing and removal of toxic gases.

March 2019

• 

  Using sensor technology to tackle red palm weevils

  1 min read · Thu, Mar 14 2019

  News

  red palm weevil palm trees coconut palms

  The red palm weevil ( Rhynchophorus ferrugineus) is a snout beetle insect originating from tropical Asia. Over the last few decades, it has spread to a large part of the Middle East, North Africa, and virtually the entire Mediterranean region. Weevil larvae, the insects at their stage of development from an egg to before their adult form, are the cause of severe and widespread damage to certain palm tree species. The weevil larvae spend their entire four-month life cycle within the palm tree's trunk, hollowing it out from the inside until the tree dies. They are considered the most destructive

February 2019

• 

  Dr Agamyrat is in the house

  1 min read · Mon, Feb 25 2019

  News

  fractional order capacitors

  It is with great pleasure to share that, Agamyrat Agambayev earned a couple of letters, Dr, in front of his name :) He successfully defended his PhD thesis titled "Design, fabrication and application of a fractional order capacitor". Agamyrat proposed a generic strategy for fractional-order capacitor fabrication that integrates layers of conductive, semiconductor and ferroelectric polymer materials to create a composite with significantly improved constant phase angle, constant phase zone, and phase angle variation performance. To prove the viability of this method, we have successfully
• 

  Robust fractional-order proportional-integral observer for synchronization of chaotic fractional-order systems

  1 min read · Wed, Feb 13 2019

  News

  chaos control system synthesis linear matrix inequalities linear systems

  Ibrahima N' Doye, et al., "Robust fractional-order proportional-integral observer for synchronization of chaotic fractional-order systems", IEEE/CAA Journal of Automatica Sinica 6 (1), 2019, 268. Abstract: In this paper, we propose a robust fractional-order proportional-integral (FOPI) observer for the synchronization of nonlinear fractional-order chaotic systems. The convergence of the observer is proved, and sufficient conditions are derived in terms of linear matrix inequalities (LMIs) approach by using an indirect Lyapunov method. The proposed FOPI observer is robust against Lipschitz
• 

  Tutku's first paper accepted at Sensors And Actuators B: chemical

  1 min read · Fri, Feb 1 2019

  News

  nanoparticles sensors sensors initiative

  The present study describes the one-step synthesis of NiO nanosheets and successful surface modification of NiO nanosheets with Au NPs. This surface modification step is vital for an application (i.e., hydrazine sensing), where Au NPs enhance the surface area and provide synergistic effect during the electrocatalytic reaction. Better sensing performance, good reproducibility, cyclic stability, and selectivity confirms the reliable and promising application for hydrazine detection. The excellent electrocatalytic reaction for hydrazine demonstrates that these Au NPs modified NiO nanosheets can

January 2019

• 

  One-step Synthesis and Decoration of Nickel Oxide Nanosheets with Gold Nanoparticles by Reduction Method for Hydrazine Sensing Application

  1 min read · Sat, Jan 26 2019

  News

  Nickel oxide Biosensors Nanosheets Gold nanoparticles One-step synthesis

  Ahmed Rafiq, et al., "One-step Synthesis and Decoration of Nickel Oxide Nanosheets with Gold Nanoparticles by Reduction Method for Hydrazine Sensing Application". Sensors and Actuators B: Chemical, 286, 2019, 139. Morphology, nanoscale features, and tunable properties are the fundamentals of nanomaterials to many applications in use nowadays. Exciting approaches are utilized for developing and exploring new nanomaterials that enable broader impact on a variety of application areas. In this study, we synthesized thin nickel oxide (NiO) nanosheets using wet chemistry process and modified their
• 

  A broader bandwidth for electrical devices

  1 min read · Tue, Jan 22 2019

  News

  A simple fractional-order capacitor has been developed by a team from KAUST. Made from a single component, this device expands the range of frequencies that can be achieved by these devices, making them better at energy storage. Traditional analogue components are resistors, capacitors, and inductors. More recently, fractional-order components have gained attention due to their unconventional properties that enable increased flexibility. For example, fractional-order capacitors can temporarily store the signal in a manner that is similar to the behavior of neurons, thus imitating the
• 3D-printed cube dials into energy harvesting

  1 min read · Sun, Jan 13 2019

  News

  electrical engineering sensors IoT

  Ambient energy emitted by cellular phones and modems can be captured and converted into electricity using unusually shaped technology.
• 

  Concurrent Sensing of CO2 and H2O from Air Using Ultramicroporous Fluorinated Metal–Organic Frameworks: Effect of Transduction Mechanism on the Sensing Performance

  1 min read · Fri, Jan 11 2019

  News

  fluorinated metal−organic framework confined space transduction technique Gas Sensors concurrent sensing

  Mohamed Rachid Tchalala, et al., "Concurrent Sensing of CO2 and H2O from Air Using Ultramicroporous Fluorinated Metal–Organic Frameworks: Effect of Transduction Mechanism on the Sensing Performance." ACS Applied Materials & Interfaces 11 (1), 2019, 1706. Abstract: Conventional materials for gas/vapor sensing are limited to a single probe detection ability for specific analytes. However, materials capable of concurrent detection of two different probes in their respective harmful levels and using two types of sensing modes have yet to be explored. In particular, the concurrent detection of
• 

  Approximate Computing is the future

  1 min read · Tue, Jan 1 2019

  News

  Ubiquitous computing and the ever-rising need for energy efficiency, pose challenges in terms of the processing requirements and the corresponding machine complexity. Nonetheless, the nature of the underlying applications, particularly dealing with real-world data, offers alternative paradigms towards the efficient utilization of the available design resources. PhD students Eb Li and Rawan Naous (now Dr Naous) explore approximate computing as an accommodating technique that can benefit from the inherent resilience of the current applications to build low power and low complexity architectures
• 

  Magneto-Acoustic Resonator for Aquatic Animal Tracking

  1 min read · Tue, Jan 1 2019

  News

  acoustic noise Biosensors acoustic pulses acoustic signal processing acoustic signal detection

  Abdullah S. Almansouri, et al., "Magneto-Acoustic Resonator for Aquatic Animal Tracking" IEEE Transactions on Magnetics 55 (2), 2019, 1. Over the past three decades, passive acoustic telemetry has significantly helped marine scientist to study and understand the spatial ecology, migratory behaviors, and mortality rates of aquatic animals. A popular telemetry system consists of two components: an acoustic transmitter tag attached to an aquatic animal and powered by a small battery, and a stationary station that receives the acoustic signals from the tagged animal and determines its location
• 

  Approximate Computing With Stochastic Transistors’ Voltage Over-Scaling

  1 min read · Tue, Jan 1 2019

  News

  Circuits Transistors Stochastic processes Approximate computing Computational modeling

  Ren Li, et al., "Approximate Computing With Stochastic Transistors’ Voltage Over-Scaling" IEEE Access 7, 2019, 6373. Ubiquitous computing and the ever-rising need for energy efficiency pose challenges in terms of the processing requirements and the corresponding machine complexity. Nonetheless, the nature of the underlying applications, particularly dealing with real-world data, offers alternative paradigms toward the efficient utilization of the available design resources. In this paper, approximate computing is addressed as an accommodating technique that can benefit from the inherent
• 

  Learning in Memristive Neural Network Architectures Using Analog Backpropagation Circuits

  1 min read · Tue, Jan 1 2019

  News

  analogue integrated circuits CMOS integrated circuits Circuits

  Olga Krestinskaya, et al., "Learning in Memristive Neural Network Architectures Using Analog Backpropagation Circuits" IEEE Transactions on Circuits and Systems-I 66 (2), 2019, 719. The on-chip implementation of learning algorithms would speed up the training of neural networks in crossbar arrays. The circuit level design and implementation of a back-propagation algorithm using gradient descent operation for neural network architectures is an open problem. In this paper, we propose analog backpropagation learning circuits for various memristive learning architectures, such as deep neural

December 2018

• 

  Paper sensors remove the sting of diabetic testing

  1 min read · Thu, Dec 20 2018

  News

  bioscience health monitoring sensors diabetes

  Inkjet-printed device helps monitor a patient’s blood sugar levels without painful needles.
• 

  Dr Sandeep's review on OFET is out

  1 min read · Sat, Dec 8 2018

  News

  Sandeep Transistors OFET

  We are excited to share our review on Organic Field Effect Transistors sensing platforms. This is Dr Sandeep's first paper with the group and more to come soon. Organic field effect transistors (OFETs) have been the focus of sensing application research over the last two decades. The challenges and possible future directions of OFET arrays in embedded sensing platforms are presented. More details at: Sandeep G.Surya, Harshil N.Raval, Rafiq Ahmad, PrashantSonar, Khaled N.Salama, V.Ramgopal Rao, Organic field effect transistors (OFETs) in environmental sensing and health monitoring: A review

November 2018

• 

  PepPrint’s 3D bioprinting technology showcased at Asbar World Forum 2018

  1 min read · Wed, Nov 28 2018

  News

  3D bioprinting

  The Asbar World Forum 2018, held in Riyadh, was a meeting that focused on understanding issues associated with transitioning Saudi Arabia's oil-based economy to a knowledge-based one. The aim was to find ways to manage and execute strategies to achieve the objectives of Vision 2030.

September 2018

• 

  Olga starts her PhD strong!

  1 min read · Fri, Sep 21 2018

  News

  Last year we were fortunate to have Olga Krestinskaya spend 5 months with us. She did some amazing work on Analog Backpropagation learning circuits using memristor crossbars. Her work was accepted at the premier circuits journal, IEEE transactions on circuits and systems 1: Regular papers. Olga is supervised by our long time collaborator and friend Prof. Alex James at Nazarbayev University. Read more about it: Learning in Memristive Neural Network Architectures Using Analog Backpropagation Circuits It is worth mentioning that an earlier version of this paper was presented at the flagship
• 

  KAUST students win top honors at ICM 2018

  1 min read · Sun, Sep 16 2018

  Awards

  magnetism cardiac catheters

  KAUST Ph.D. students Abdullah S. Almansouri and Hanan Mohammed recently won top honors at the 21st International Conference on Magnetism (ICM 2018), which took place in San Francisco, U.S., from July 15 to 20. Almansouri won the Best Poster Award, while Mohammed won the People's Choice Award in the Magnetism as Art Showcase. The ICM is an international conference series attracting more than 2,000 global attendees, and it continues with a series of meetings that are held every three years around the world.
• 

  Enabling IoT applications using RF energy harvesting

  1 min read · Fri, Sep 14 2018

  News

  PhD students Azamat and Thang demonstrate a novel fractal-based antenna for the first time which enables simultaneous operation at three important frequencies (GSM 900, GSM 1800 and 3 G 2.1 GHz). Complete rectenna system testing in a field has shown decent harvested energy which is suitable to power small sensor nodes of IoT applications. Rectenna has been implemented by additive manufacturing techniques (combination of 3D printing and screen printing) which enables cost savings as well as future mass manufacturing viability. The Antenna has been implemented on the package of the circuits

April 2018

• 

  Lining MOF pockets to detect noxious gases

  1 min read · Sun, Apr 29 2018

  News

  MOFs sensors Materials

  A porous material with tailor-made pockets stitched into its structure is a promising material for sensing noxious gases. A thin film of the material, coated onto an electrode, formed an electronic sensor that could detect traces of sulfur dioxide gas. The sensor is a significant step toward real-world devices that can sniff out dangerous gases in real air. Although several lab-based analytical instruments can detect traces of a specific gas in the air, these instruments are typically large, expensive, power-hungry machines. There is still a need for small, inexpensive, energy-efficient
• 

  Analysis and verification of identical-order mixed-matrix fractional-order capacitor networks

  1 min read · Sun, Apr 29 2018

  News

  capacitor networks Biosensors mixed matrix fractional order

  Kartci, Aslihan, et al"Analysis and verification of identical-order mixed-matrix fractional-order capacitor networks." In 2018 14th Conference on Ph. D. Research in Microelectronics and Electronics (PRIME), 2018, 277. In the open literature while capacitors are introduced with -90 degrees phase angle, here we described our fabricated polymer composite, mixed matrix, as a fractional- order capacitor (FoC). The effect on phase and pseudo- capacitance using a detailed numerical and experimental study of circuit network connections of three identical-order FoCs is shown. The used devices have
• 

  Electronically tunable fully integrated fractional-order resonator

  1 min read · Thu, Apr 26 2018

  News

  Circuits fractional-order resonator

  Georgia Tsirimokou., et al., "Electronically tunable fully integrated fractional-order resonator". I EEE Transactions on Circuits and Systems II: Express Briefs, 65(2), 2017, 166. A fully integrated implementation of a parallel fractional-order resonator that employs together a fractional-order capacitor and a fractional-order inductor is proposed in this brief. The design utilizes current-controlled operational transconductance amplifiers as building blocks, designed, and fabricated in AMS 0.35-μm CMOS process and based on a second-order approximation of a fractional-order differentiator
• 

  Highly sensitive and selective SO2 MOF sensor: the integration of MFM-300 MOF as a sensitive layer on a capacitive interdigitated electrode

  1 min read · Thu, Apr 26 2018

  News

  Gas Sensors NO2 H2 SO2

  Valeriya Chernikova, et al., "Highly sensitive and selective SO2 MOF sensor: the integration of MFM-300 MOF as a sensitive layer on a capacitive interdigitated electrode." Journal of Materials Chemistry A 6(14), 2018, 5550. We report on the fabrication of an advanced chemical capacitive sensor for the detection of sulfur dioxide (SO2) at room temperature. The sensing layer based on an indium metal–organic framework (MOF), namely MFM-300, is coated solvothermally on a functionalized capacitive interdigitated electrode. The fabricated sensor exhibits significant detection sensitivity to SO2 at
• 

  A CMOS RF-to-DC Power Converter With 86% Efficiency and− 19.2-dBm Sensitivity

  1 min read · Thu, Apr 26 2018

  News

  RF-to-dc power converter wireless powering

  Abdullah S. Almansouri, et al., "A CMOS RF-to-DC Power Converter With 86% Efficiency and− 19.2-dBm Sensitivity." IEEE Transactions on Microwave Theory and Techniques 66 (5), 2018, 2409. Abstract: This paper proposes an RF-to-dc power converter for ambient wireless powering that is efficient, highly sensitive, and less dependent on the load resistance with an extended dynamic range. The proposed rectifier utilizes a variable biasing technique to control the conduction of the rectifying transistors selectively, hence minimizing the leakage current; unlike the prior work that has a fixed feedback
• 

  Towards fractional-order capacitors with broad tunable constant phase angles: Multi-walled carbon nanotube-polymer composite as a case study

  1 min read · Thu, Apr 26 2018

  News

  focs Circuits

  Agamyrat Agambayev, et al., "Towards fractional-order capacitors with broad tunable constant phase angles: Multi-walled carbon nanotube-polymer composite as a case study." Journal of Physics D: Applied Physics 51(6), 2018, 065602. In this study, multi-walled carbon nanotube (MWCNT) filled polyevinelidenefluoride-trifluoroethylene-chlorofluoroethylene composites are used to realize fractional-order capacitors (FOCs). A solution-mixing and drop-casting approach is used to fabricate the composite. Due to the high aspect ratio of MWCNTs, percolation regime starts at a small weight percentage (wt%)
• 

  Series-, parallel-, and inter-connection of solid-state arbitrary fractional-order capacitors: theoretical study and experimental verification

  1 min read · Thu, Apr 26 2018

  News

  focs graphene oxide percolated P VDF TrFE CFE

  Aslihan Kartci, et al., " Series-, parallel-, and inter-connection of solid-state arbitrary fractional-order capacitors: theoretical study and experimental verification". IEEE Access, 6, 2018, 10933. Abstract: In this paper, general analytical formulas are introduced for the determination of equivalent impedance, magnitude, and phase, i.e., order, for n arbitrary fractional-order capacitors (FoCs) connected in series, parallel, and their interconnection. The approach presented helps to evaluate these relevant quantities in the fractional domain, since the order of each element has a
• 

  The quest for highly sensitive QCM humidity sensors: The coating of CNT/MOF composite sensing films as case study

  1 min read · Thu, Apr 26 2018

  News

  HKUST1 composition Gas Sensors MOFs

  Karumbaiah N. Chappanda, et al., "The quest for highly sensitive QCM humidity sensors: The coating of CNT/MOF composite sensing films as case study". Sensors and Actuators B: Chemical, 257, 2018, 609. The application of metal-organic frameworks (MOFs) as a sensing layer has been attracting great interest over the last decade, due to their uniform properties in terms of high porosity and tunability, which provides a large surface area and/or centers for trapping/binding a targeted analyte. Here we report the fabrication of a highly sensitive humidity sensor that is based on composite thin films
• 

  A 12.4 fJ-FoM 4-Bit Flash ADC Based on the StrongARM Architecture

  1 min read · Thu, Apr 26 2018

  News

  Almansouri, A. S., Alturki, A., Fariborzi, H., Salama, K. N., & Al-Attar, T. (2018, July). A 12.4 fJ-FoM 4-Bit Flash ADC Based on the StrongARM Architecture. In 2018 14th Conference on Ph. D. Research in Microelectronics and Electronics (PRIME) (pp. 37-40). IEEE. This work proposes an efficient 4-bit flash ADC based on the StrongARM comparator architecture. The proposed design eliminates the need for the resistive ladder by systematically modifying the sizing of the input differential pair of each comparator. As a consequence, the area and the power consumed within the ladder is eliminated
• 

  Fractional-Order Hartley Oscillator.

  1 min read · Thu, Apr 26 2018

  News

  osilation Circuits foc

  Agambayev, A., et al., "Fractional-Order Hartley Oscillator". PRIME, 2018, 45. A fractional-order capacitor (FOC) is developed using a Molybdenum disulfide ferroelectric polymer composite. The fabricated FOC exhibits constant phase over five decades between 100 Hz-10 MHz, which is the broadest operating frequency bandwidth reported so far for an FOC. Furthermore, a fractional-order Hartley oscillator is built using this FOC, and provide ten times higher oscillation frequency than the frequency of the conventional Hartley oscillator counterpart.
• 

  Analog backpropagation learning circuits for memristive crossbar neural networks

  1 min read · Thu, Apr 26 2018

  News

  Circuits tsmc CMOS

  Krestinskaya, Olga, "Analog backpropagation learning circuits for memristive crossbar neural networks." 2018 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2018, 1. The implementation of backpropagation algorithm using gradient descent operation with analog circuits is an open problem. In this paper, we present the analog learning circuits for realizing backpropagation algorithm for use with neural networks in memristive crossbar arrays. The circuits are simulated in SPICE using TSMC 180nm CMOS process models, and HP memristor models. The gradient descent operations are
• 

  Memristor-based Synaptic Sampling Machines

  1 min read · Thu, Apr 26 2018

  News

  biological neural network Biosensors synapses Synaptic Sampling Machine SSM

  Dolzhikova, I, et al., "Memristor-based Synaptic Sampling Machines. In 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO), 2018, 425. Synaptic Sampling Machine (SSM) is a type of neural network model that considers biological unreliability of the synapses. We propose the circuit design of the SSM neural network which is realized through the memristive-CMOS crossbar structure with the synaptic sampling cell (SSC) being used as a basic stochastic unit. The increase in the edge computing devices in the Internet of things era, drives the need for hardware acceleration for data
• 

  Linear and nonlinear feature extraction for neural seizure detection

  1 min read · Thu, Apr 26 2018

  News

  Biosensors Linear nonlinear Neural Seizure Detection

  Elgammal, M. et al., "Linear and nonlinear feature extraction for neural seizure detection" In 2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS), 2018, 795. In this paper, both linear and nonlinear features have been reviewed with linear support vector machine (SVM) classifier for neural seizure detection. The work introduced in the paper includes performance measurement through different metrics: accuracy, sensitivity, and specificity of multiple linear and nonlinear features with linear support vector machine (SVM). A comparison is performed between the
• 

  ASIC oriented comparative analysis of biologically inspired neuron models

  1 min read · Thu, Apr 26 2018

  News

  Fitzhugh Nagumo Circuits quartic Biosensors Izhikevich Hindmarsh Rose

  El-Maksoud, Ahmed J. Abd, et al. "ASIC oriented comparative analysis of biologically inspired neuron models." 2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2018, 504. This paper introduces the hardware and the ASIC implementations of the four most popular biologically inspired neuron models. The models are quartic, Izhikevich, Hindmarsh Rose and Fitzhugh-Nagumo. Moreover, some approximate computing techniques are applied on these models to reduce the area and power consumption. In addition, ASIC implementations of these models and their approximate
• 

  Experimental Verification of a Fractional-Order Wien Oscillator Built Using Solid-State Capacitors

  1 min read · Thu, Apr 26 2018

  News

  MoS2 Circuits foc

  Kartci, Aslihan, et al. "Experimental Verification of a Fractional-Order Wien Oscillator Built Using Solid-State Capacitors." 2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2018, 544. A new type of fractional-order capacitors (FOCs) is fabricated using a molybdenum disulfide (MoS 2 )-ferroelectric polymer composite. The phase angle of this FOC's impedance remains constant between 100 Hz and 10MHz with only a small deviation of ±4 degrees. The performance of the fabricated FOCs is further tested using the well-known Wien oscillator. The main motivation of
• 

  An approximate multiplier based hardware implementation of the izhikevich model

  1 min read · Thu, Apr 26 2018

  News

  Circuits Izhikevich spiking neuron model

  Hassan, Salma, et al., "An approximate multiplier based hardware implementation of the izhikevich model." IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2018, 492. This paper proposes the use of approximate multipliers in the hardware implementation of Izhikevich spiking neuron model. The accuracy of the model is investigated by calculating various types of errors on a single neuron and this analysis shows that the proposed model follows the original model. It shows that the proposed model reproduces the same firing patterns as the original one. The network
• 

  A low-power time-domain comparator for iot applications

  1 min read · Thu, Apr 26 2018

  News

  Hassan, A. et al., "A low-power time-domain comparator for iot applications". IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS), IEEE, 2018, 1142. Abstract: This paper introduces a low-power time-domain comparator with a modified current starved inverter circuit. The proposed comparator converts the analog input voltage into a time delay that creates a phase difference between the input signal and the reference signal. Then a phase detector is utilized to determine either the input signal is leading or lagging compared to the reference signal. Moreover, the power
• 

  CMOS-RC Colpitts oscillator design using floating fractional-order inductance simulator

  1 min read · Thu, Apr 26 2018

  News

  CMOS Circuits foc FOL

  Kartci, Aslihan, et al. "CMOS-RC Colpitts oscillator design using floating fractional-order inductance simulator." IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2018, 905. This paper deals with CMOS fractional-order inductance (FoL) simulator design and its utilization in 2.75 th order Colpitts oscillator providing high frequency of oscillation. The proposed floating FoL is composed of two unity-gain current followers (CF±s), two inverting voltage buffers, a transconductor, and a fractional-order capacitor (FoC) of order 0.75, while the input intrinsic
• 

  An ultra-broadband single-component fractional-order capacitor using MoS2-ferroelectric polymer composite

  1 min read · Thu, Apr 26 2018

  News

  MoS2 Circuits foc

  Agamyrat Agambayev, et al., "An ultra-broadband single-component fractional-order capacitor using MoS2-ferroelectric polymer composite". Applied Physics Letters, 113(9),2018, 093505. The phase angle of a fractional-order capacitor's (FOC) impedance has a constant value between −90°−90° and 0°0°. Maintaining this value over a broad frequency band is of utmost importance since it increases the applicability of the electrical circuit that employs the fractional-order capacitor (FOC). In this work, a molybdenum disulfide (MoS2)-ferroelectric polymer composite is used to design/fabricate an FOC
• 

  Analysis and Characterization of Pseudorandom Number Generators for Cryptographic Applications

  1 min read · Thu, Apr 26 2018

  News

  Hashem, M., et al., "Analysis and Characterization of Pseudorandom Number Generators for Cryptographic Applications." (2018). The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format. By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.
• 

  A hybrid modular microfluidic device for emulsion generation

  1 min read · Thu, Apr 26 2018

  News

  microfluidic emulsion generation

  Zhengyuan Zhou, et al., "A hybrid modular microfluidic device for emulsion generation". Sensors and Actuators A: Physical 280, 2018, 422. We report a novel modular plug-and-play microfluidic device for versatile emulsion generation, which consists of three parts: a top module for the dispersed phase supply, a glass capillary for emulsion creation and a bottom module for the continuous phase supply. By combining different modules and tapered glass capillaries, single emulsions, Janus emulsions and double emulsions have been successfully produced. The hybrid strategy allows us to produce smaller
• 

  Guest Editorial: Special Issue on Large-Scale Memristive Systems and Neurochips for Computational Intelligence

  1 min read · Thu, Apr 26 2018

  News

  Computational Intelligence Circuits Memristive Systems Neurochips

  Alex Pappachen James, et al., "Guest Editorial: Special Issue on Large-Scale Memristive Systems and Neurochips for Computational Intelligence". IEEE Transactions on Emerging Topics in Computational Intelligence, 2(5), 2018, 320. Abstract: The papers in this special section explore the use of large scale memristive systems and neurochips for computational intelligence. The interest in the application of memristor device as a memory element, neuromorphic device, as a sensor and as a switch for programmable logic circuits has been growing in the last decade. The small size, ease of
• 

  Trianglamine-based supramolecular organic framework with permanent intrinsic porosity and tunable selectivity

  1 min read · Thu, Apr 26 2018

  News

  Gas Sensors TSOF1

  Arnaud Chaix, et al., "Trianglamine-based supramolecular organic framework with permanent intrinsic porosity and tunable selectivity", Journal of the American Chemical Society 140 (44), 2018, 14571. Here we introduce for the first time a metal-free trianglamine-based supramolecular organic framework, T-SOF-1, with permanent intrinsic porosity and high affinity to CO2. The capability of tuning the pore aperture dimensions is also demonstrated by molecular guest encapsulation to afford excellent CO2/CH4 separation for natural gas upgrading.
• 

  Fully printed 3D cube-shaped multiband fractal rectenna for ambient RF energy harvesting

  1 min read · Thu, Apr 26 2018

  News

  Fully printed 3D Circuits RF energy harvesting rectenna

  Azamat Bakytbekov, A, et al., "Fully printed 3D cube-shaped multiband fractal rectenna for ambient RF energy harvesting". Nano energy, 53, 2018, 587. The Internet of Things (IoT) is an emerging paradigm that requires billions of wirelessly connected devices in a complex radio-frequency (RF) environment. With such a huge number of devices in this scenario, recharging or replacing batteries becomes impractical. Therefore, powering IoT devices by harvesting energy from ambient sources, such as that available in the RF spectrum, is an attractive solution. The antenna for the RF energy harvester
• 

  A New Design Methodology for Time-Based Capacitance-to-Digital Converters (T-CDCs)

  1 min read · Thu, Apr 26 2018

  News

  Circuits TCDCs

  Ali H. Hassan, et al., "A New Design Methodology for Time-Based Capacitance-to-Digital Converters (T-CDCs)". AEU-International Journal of Electronics and Communications 96, 2018, 238. This paper introduces a 9-bit time-based capacitance-to-digital converter (T-CDC). This T-CDC adopts a new design methodology for parasitic cancellation with a simple calibration technique. In T-CDCs, the input sensor capacitance is first converted into a delay pulse using a capacitance-to-time converter (CTC) circuit; then this delay signal is converted into a digital code through a time-to-digital converter
• 

  A Comparative Study of Interdigitated Electrode and Quartz Crystal Microbalance Transduction Techniques for Metal–Organic Framework-Based Acetone Sensors

  1 min read · Thu, Apr 26 2018

  News

  Quartz Crystal Circuits Metal–Organic Framework-Based Acetone Sensors

  Chappanda N. Karumbaiah, et al., "A Comparative Study of Interdigitated Electrode and Quartz Crystal Microbalance Transduction Techniques for Metal–Organic Framework-Based Acetone Sensors". Sensors 18(11), 2018, 3898. We present a comparative study of two types of sensor with different transduction techniques but coated with the same sensing material to determine the effect of the transduction mechanism on the sensing performance of sensing a target analyte. For this purpose, interdigitated electrode (IDE)-based capacitors and quartz crystal microbalance (QCM)-based resonators were coated with
• 

  Deposition of nanomaterials: a crucial step in biosensor fabrication

  1 min read · Thu, Apr 26 2018

  News

  nanotechnology Biosensors nanomaterials

  Ahmed Rafiq , et al., "Deposition of Nanomaterials: a Crucial Step in Biosensor Fabrication". Materials Today Communications 17, 2018, 289. Biosensor development includes the deposition of (nano)materials onto a conductive electrode surface, which is a crucial step for obtaining improved performance from the constructed biosensors. Various methods have been used to create a successful matrix of (nano)materials that ensures proper contact between the material and electrode surface. The purpose of (nano)material deposition is to provide a high surface area to improve the electroanalytical
• 

  A fully inkjet-printed disposable glucose sensor on paper

  1 min read · Thu, Apr 26 2018

  News

  disposable Biosensors glucose sensor

  Eloise Bihar, et al., "A fully Inkjet-printed Disposable Glucose Sensor on Paper". NPJ Flexible Electronics, 2(1), 2018, 1. Inexpensive and easy-to-use diagnostic tools for fast health screening are imperative, especially in the developing world, where portability and affordability are a necessity. Accurate monitoring of metabolite levels can provide useful information regarding key metabolic activities of the body and detect the concomitant irregularities such as in the case of diabetes, a worldwide chronic disease. Today, the majority of daily glucose monitoring tools rely on piercing the
• 

  Biofunctionalized Two-dimensional Ti3C2 MXenes for Ultrasensitive Detection of Cancer Biomarker

  1 min read · Thu, Apr 26 2018

  News

  MXenes Biosensors Ti3C2 Cancer Biomarker

  Saurabh Kumar, et al., "Biofunctionalized Two-dimensional Ti3C2 MXenes for Ultrasensitive Detection of Cancer Biomarker". Biosensors and Bioelectronics, 121, 2018, 243. In this work, ultrathin Ti3C2-MXene nanosheets were synthesized by minimally intensive layer delamination methods, and uniformly functionalized with aminosilane (f-Ti3C2-MXene) to provide a covalent binding for the immobilized bio-receptor (anti-CEA) for label free, ultrasensitive detection of cancer biomarker (carcinoembryonic antigen, CEA). The effect of different redox probes on the electrochemical behavior of f-Ti3C2-MXene
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  The raw power of human motion

  1 min read · Sun, Apr 8 2018

  News

  MXene Wearable sensors material science and engineering

  Standalone power modules that harvest and convert vibrations from their surroundings into electricity could soon fuel future microsystems.

September 2017

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  Bringing signals into phase

  1 min read · Mon, Sep 25 2017

  News

  electricity electrical engineering material science

  A novel type of electronic component made from a blend of polymer materials could enable more effective circuitry.