News


Dr. Hesham Omran secures an ITIDA grant

posted Sep 22, 2018, 7:30 AM by Khaled salama   [ updated Sep 22, 2018, 11:59 AM ]

Our Lab Alumni, Dr Hesham Omran, currently an Assistant Professor at the Integrated Circuits Lab (ICL), Faculty of Engineering, Ain Shams University, 
just secured his first grant as the lead PI. The project "AutoAIDO: Automation of Analog IC Design and Optimization" is funded for 16 months by the Information Technology Industry Development Agency (ITIDA) - under the Information Technology Academia Collaboration (ITAC) Program.

 He is trying to address the significant design gap between the growing chip complexity and the analog designer’s productivity impacting the design-time, the design-cost, and the products time-to-market (TTM). The aim of this proposal is to provide an analog IC synthesis tool that automates some of the key time-consuming steps in the analog design flow.  He demonstrated some of these ideas in his recent publications:

Olga starts her PhD strong!

posted Sep 20, 2018, 6:50 PM by Khaled salama

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. 

It is worth mentioning that an earlier version of this paper was presented at the flagship circuits society conference ISCAS 2018.T  Read more about it: Analog Backpropagation Learning Circuits for Memristive Crossbar Neural Networks

Enabling IoT applications using RF energy harvesting

posted Sep 14, 2018, 4:02 AM by Khaled salama   [ updated Sep 14, 2018, 4:26 AM ]

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 (rectifier, matching network and battery), which is not typically the case as antennas are implemented on separate PCB. By utilizing System-on-Package (SoP) concept, size and cost of the harvester are reduced, and available space is optimized• The work was accepted at the prestigious Elsevier Nano Energy journal (IF=13). This work is in collaboration with Prof. Atif Shamim. 
More details at: Fully Printed 3D Cube-Shaped Multiband Fractal Rectenna for Ambient RF Energy Harvesting
Congratulations Azamat and Thang.

Its worth mentioning that this work builds on our earlier work:
  1. Abdullah Almansouri, Mahmoud Ouda and  Khaled N. Salama,A CMOS RF-to- DC Power Converter with 86% Efficiency and -19.2dBm Sensitivity”, IEEE Transactions on Microwave Theory and Techniques, vol 66, no 5, pp 2409-2415, 2018 doi:10.1109/TMTT.2017.2785251
  2. Muhammad Fahad Farooqui Muhammad Akram Karimi, Khaled Nabil Salama and Atif Shamim, 3D-Printed Disposable Wireless Sensors with Integrated Microelectronics for Large Area Environmental Monitoring" Advanced Materials Technologies, 20172, 1700051 DOI: 10.1002/admt.201700051 [news] [more news]
  3. M. Ouda, W. Khalil and K.N. Salama, "Self-Biased Differential Rectifier with Enhanced Dynamic Range for Wireless Powering" IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 64, no. 5, pp 515-519,  2017 doi:10.1109/TCSII.2016.2591263
  4. M. Ouda, W. Khalil and K.N. Salama, "Wide-Range Adaptive RF-to-DC Power Converter for UHF RFIDs," IEEE Microwave and Wireless Components Letters, Vol 26, no 8, pp 634 - 6362016, 2016 10.1109/LMWC.2016.2586077
  5. M. Ouda, L. Marnat, A. Shamim, K N Salama, 5.2-GHz RF Power Harvesting Module in 0.18 μm CMOS for Biomedical Implantable Sensors, IEEE Transactions on Microwave Theory and Techniques, vol 61, n 5, pp 2177-2184,  2013
  6.  L. Marnat, M. Ouda, M. Arsalan, K. Salama, A. Shamim, "On-chip implantable antennas for wireless power and data transfer in a glaucoma monitoring SoC", IEEE Antennas and Wireless Propagation Letters (AWPL), vol 11, pp 1671-1674, 2012 



Talks, Talks and more Talks

posted Sep 7, 2018, 9:54 AM by Khaled salama

Interesting discussions on future trends of memristive circuit applications with Prof. Alex James and his students at Nazarbayev University, Astana Kazakhstan. 




Agamyrat's paper shines

posted Sep 5, 2018, 3:07 PM by Khaled salama

One of the most read papers in Applied Physic's letter's. https://aip.scitation.org/journal/apl 
Agamyrat Agambayev demonstrates 5 decades of constant phase angle, a world record,  using  molybdenum disulfide (MoS2)-ferroelectric polymer composite accepted at Applied Physics letters.

Discover KAUST

posted Sep 1, 2018, 9:06 PM by Khaled salama   [ updated Sep 1, 2018, 11:02 PM ]

Discover a place of the unexpected, a place where the possible becomes possible - this is King Abdullah University of Science and Technology (KAUST). KAUST is a university where conventions are challenged and new ideas are born. We want to change the world through science and innovation. When asked what they like about KAUST and why they are here, scientists say they like that their research can go from the lab to the research park, they like being able to collaborate with leading researchers from around the world, they like having the opportunity to turn ideas into a startup venture. They are here because KAUST provides work/life balance, a safe environment and is a great place to do research.

KAUST is a melting pot of cultures, nationalities, languages and backgrounds, all contributing to the richness of the scientific research and campus life.
Learn more: kaust.edu.sa



YouTube Video

YouTube Video




Label free, ultrasensitive detection of cancer biomarkers

posted Aug 31, 2018, 10:04 PM by Khaled salama   [ updated Sep 1, 2018, 1:08 PM ]

We continue our strong and fruitful collaboration with prof. Husam Alshareef on using new 2D materials for biosensors. 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). We believe that this work opens a new window for development of MXene-based highly sensitive DNA, aptamer, enzyme, antibody, and cell based biosensors, and could be further used in drug delivery application.
Read all about it at:
Saurabh Kumar, Yongjiu Lei, Niman H. Alshareef, M.A. Quevedo-Lopez, Khaled N. Salama "Biofunctionalized Two-Dimensional Ti3C2 MXenes for Ultrasensitive Detection of Cancer Biomarker", Biosensors and Bioelectronics, 2018

A world record: 5 decades of constant phase angle

posted Aug 30, 2018, 12:50 PM by Khaled salama

PhD student Agamyrat demonstrates the potential of the Fractional-Order Capacitors(FOCs) fabricated using MoS2-ferroelectric polymer composites in robust and accurate realization of various electrical systems. A molybdenum disulfide (MoS2)-ferroelectric polymer composite is used to design/fabricate a FOC. The resulting FOC's bandwidth of operation, which is defined as the frequency band where the variation in the phase angle is no more than ±4° is five decades between 100 Hz and 10 MHz, a 3 decades improvement over the best-reported state of the art. The value of the constant phase angle can be tuned by changing the type of the ferroelectric polymer in the composite and the volume ratio of MoS2
Read more :
 Agamyrat Agambayev, Mohamed Farhat, Shashikant P. Patole, Ali H. Hassan, Hakan Bagci, and Khaled N. Salama "An ultra-broadband single-component fractional-order capacitor using MoS2 ferroelectric polymer composite," Applied Physics Letters, 2018

Sensing the world around us!

posted Aug 19, 2018, 7:05 AM by Khaled salama

KAUST discovery highlights the KAUST Sensor Initiative, which brought together global experts in sensor development, material science, energy, communications and data analysis on the KAUST campus. The initiative also included an inaugural students' day event, which provided master's degree and doctoral students the chance to network and showcase their research with peers. A career panel discussion was also part of the event. To read more check the following link

Some fancy 3D printed microfluidic devices

posted Aug 18, 2018, 3:42 PM by Khaled salama

We continue working on delivery systems for biosensors in the form of microfluidic devices. In our recent work 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. More details at:

Zhengyuan Zhou, Tiantian Kong, Hend Mkaouar, Khaled N.Salama and Jia Ming Zhang "A hybrid modular microfluidic device for emulsion generation," Sensors and Actuators A: Physical https://doi.org/10.1016/j.sna.2018.08.005

It's worth noting that we have a serious of interesting 3D printed microfluidic devices and their biocompatibility:
                1. Shilpa Sivashankar, Schristos Sapsanis, Sumeyra Agambayev, Ulrich Buttner, Khaled Nabil Salama,Label-free Detection of Sex determining Region Y (SRY) via Fractal Capacitive Biosensor 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC'16), 2016
                2. Shilpa Sivashankar, Sumeyra Agambayev, Yousof Mashraei, Er Qiang Li, Sigurdur T. Thoroddsen and Khaled Nabil Salama, "A “Twisted” Microfluidic Mixer Suitable for Wide Range of Flow Rate Applications", Biomicrofluidics 10, 034120 (2016)
                3. Shilpa Sivashankar, Sumeyra Agambayev, kholod alamoudi,  Ulrich Buttner,Niveen Khashab, and Khaled Nabil Salama Compatibility analysis of 3D printer resin for biological applications, micro and nano letters,Volume 11, Issue 10, p. 654 – 659, 2016
                4. Ulrich Buttner, Shilpa Sivashankar, Sumeyra Agambayev, Yousof Mashraei, and Khaled Nabil Salama, "Flash μ-Fluidics: A Rapid Prototyping Method For Fabricating Microfluidic Devices," RSC Advances, 2016 DOI: 10.1039/C6RA13582J
                5. Yousof Mashraei, Shilpa Sivashankar, Ulrich Buttner, Khaled Nabil Salama, Integration of Fractal Biosensor in a Digital Microfluidic Platform, IEEE sensors jounal,  Vol 16, no 24, pp 8775 - 8783, 2016 (10.1109/JSEN.2016.2578440) (invited as top paper from sensors 2015 conference)

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