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Graphene–Graphite Polyurethane Composite Based Wristband Supercapacitor for Wearable Electronics (2021)
Conference Proceeding
Manjakkal, L., & Dahiya, R. (2021). Graphene–Graphite Polyurethane Composite Based Wristband Supercapacitor for Wearable Electronics. In 2021 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps51544.2021.9469823

Wearable and flexible electronics research has recently boomed for applications such as health monitoring and smart portable electronic devices. Considering the advances in flexible and wearable electronics, a suitable energy autonomy has become a cr... Read More about Graphene–Graphite Polyurethane Composite Based Wristband Supercapacitor for Wearable Electronics.

Flexible and Printed Potentiometric pH Sensor for Water Quality Monitoring (2021)
Conference Proceeding
Hosseini, E. S., Manjakkal, L., & Dahiya, R. (2021). Flexible and Printed Potentiometric pH Sensor for Water Quality Monitoring. In 2021 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps51544.2021.9469778

This work presents a flexible potentiometric pH sensor consisting of a graphite-CuO sensitive electrode and an Ag/AgCl reference electrode. The pH sensor was fabricated by using a simple stencil hand printing technique at room temperature. The result... Read More about Flexible and Printed Potentiometric pH Sensor for Water Quality Monitoring.

Metal Coated Fabric Based Supercapacitors (2020)
Conference Proceeding
Pullanchiyodan, A., Manjakkal, L., & Dahiya, R. (2020). Metal Coated Fabric Based Supercapacitors. In 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps49123.2020.9239537

This work reports the fabric-based supercapacitors (FSCs) using silver coated textile as the current collector. The electrochemical properties of the device in PVA-KCl gel electrolyte was studied. The performance of the device was further improved by... Read More about Metal Coated Fabric Based Supercapacitors.

Flexible Potentiostat Readout Circuit Patch for Electrochemical and Biosensor Applications (2020)
Conference Proceeding
Escobedo, P., Manjakkal, L., Ntagios, M., & Dahiya, R. (2020). Flexible Potentiostat Readout Circuit Patch for Electrochemical and Biosensor Applications. In 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps49123.2020.9239515

This paper presents a miniaturized potentiostat readout circuit patch developed for electrochemical or biosensors. The presented patch has been fabricated on a flexible polyimide substrate using off-the-shelf electronics. In contrast to the tradition... Read More about Flexible Potentiostat Readout Circuit Patch for Electrochemical and Biosensor Applications.

Screen-Printed Flexible Carbon versus Silver Electrodes for Electrochemical Sensors (2020)
Conference Proceeding
Franco, F. F., Manjakkal, L., & Dahiya, R. (2020). Screen-Printed Flexible Carbon versus Silver Electrodes for Electrochemical Sensors. In 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps49123.2020.9239549

This paper presents the carbon-based screen-printed electrodes (C-SPEs) and compares them with conventional SPEs made of Ag. The electrochemical performance of the two types of electrodes is compared in the presence of common salts found in water bod... Read More about Screen-Printed Flexible Carbon versus Silver Electrodes for Electrochemical Sensors.

Glycine-based Flexible Biocompatible Piezoelectric Pressure Sensor for Healthcare Applications (2020)
Conference Proceeding
Hosseini, E. S., Manjakkal, L., Shakthivel, D., & Dahiya, R. (2020). Glycine-based Flexible Biocompatible Piezoelectric Pressure Sensor for Healthcare Applications. In 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps49123.2020.9239575

This work presents biocompatible flexible piezoelectric composite fabricated by self-assembly of amino acid glycine molecules inside natural chitosan polymer. Piezoelectric composite film consists of glycine spherulite structure embedded in chitosan... Read More about Glycine-based Flexible Biocompatible Piezoelectric Pressure Sensor for Healthcare Applications.

Flexible Supercapacitor with Sweat Equivalent Electrolyte for Safe and Ecofriendly Energy Storage (2020)
Conference Proceeding
Manjakkal, L., Pullanchiyodan, A., Hosseini, E. S., & Dahiya, R. (2020). Flexible Supercapacitor with Sweat Equivalent Electrolyte for Safe and Ecofriendly Energy Storage. In 2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps49123.2020.9239523

Textile based wearable, biocompatible and low-cost energy storage devices are highly in demand to overcome the issue of powering wearable sensors and electronic devices. In this work, we designed an environmentally friendly textile supercapacitor (SC... Read More about Flexible Supercapacitor with Sweat Equivalent Electrolyte for Safe and Ecofriendly Energy Storage.

Cloth Based Biocompatiable Temperature Sensor (2019)
Conference Proceeding
Manjakkal, L., Soni, M., Yogeswaran, N., & Dahiya, R. (2019). Cloth Based Biocompatiable Temperature Sensor. In 2019 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps.2019.8792319

Circular economy focussing on the reuse and recycling of materials is gaining significant interest these days as the concern for environment sustainability is increasing [1] - [3] . In this regard, printed electronics or green electronics is being pr... Read More about Cloth Based Biocompatiable Temperature Sensor.

Printed Temperature Sensor based on Graphene Oxide/PEDOT:PSS (2019)
Conference Proceeding
Soni, M., Bhattacharjee, M., Manjakkal, L., & Dahiya, R. (2019). Printed Temperature Sensor based on Graphene Oxide/PEDOT:PSS. In 2019 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). https://doi.org/10.1109/fleps.2019.8792268

Temperature is an important physical parameter which need to be monitored for various applications ranging from health monitoring to robotics [1] , [2]. In humans, accurate measurement of the variations in the skin temperature is utilized for investi... Read More about Printed Temperature Sensor based on Graphene Oxide/PEDOT:PSS.

Energy autonomous eSkin (2019)
Conference Proceeding
Manjakkal, L., Nunez, C. G., & Dahiya, R. (2019). Energy autonomous eSkin. In Proceedings SPIE 10982: Micro- and Nanotechnology Sensors, Systems, and Applications XI. https://doi.org/10.1117/12.2520757

The energy autonomy is a critical feature that would enable better portability and longer operation times for wearable systems. In the next generation of prosthesis and robotics, the operation of multiple components (from few sensors to millions of e... Read More about Energy autonomous eSkin.

Flexible ZnO Nanowires-Graphene Stack by Hot Lamination Method (2018)
Conference Proceeding
Shakthivel, D., Yogeswaran, N., Manjakkal, L., & Dahiva, R. (2018). Flexible ZnO Nanowires-Graphene Stack by Hot Lamination Method. In 2018 IEEE Sensors. https://doi.org/10.1109/icsens.2018.8589818

Inorganic nanostructures on flexible substrates form key components for high performance flexible electronics. 1D (Nanowires) and 2D (graphene) nanostructures are inherently flexible, in addition to having attractive electronic properties. The utilit... Read More about Flexible ZnO Nanowires-Graphene Stack by Hot Lamination Method.

Energy Autonomous Sensors for Water Quality Monitoring (2018)
Conference Proceeding
Manjakkal, L., Nikbakhtnasrabadi, F., & Dahiya, R. (2018). Energy Autonomous Sensors for Water Quality Monitoring. . https://doi.org/10.1109/icsens.2018.8589564

This work is aimed to investigate conductivity and temperature of a solution by using energy autonomous thick film sensors. A RuO 2 based thick film electrode is fabricated for conductivity sensor and an interdigitated electrode with graphite sensiti... Read More about Energy Autonomous Sensors for Water Quality Monitoring.

Enhanced Triboelectric Nanogenerator Performance via an Optimised Low Permittivity, Low Thickness Substrate (2018)
Conference Proceeding
Min, G., Manjakkal, L., Mulvihill, D. M., & Dahiya, R. S. (2018). Enhanced Triboelectric Nanogenerator Performance via an Optimised Low Permittivity, Low Thickness Substrate. . https://doi.org/10.1109/icsens.2018.8589631

With electrical power generated from mechanical contact, the triboelectric nanogenerators (TEN Gs) have attracted attention recently as a promising route to realising self-powered sensors (e.g. tactile sensors, biomedical sensors etc.). Due to their... Read More about Enhanced Triboelectric Nanogenerator Performance via an Optimised Low Permittivity, Low Thickness Substrate.

Bio-Organic Glycine Based Flexible Piezoelectric Stress Sensor for Wound Monitoring (2018)
Conference Proceeding
Hosseini, E. S., Manjakkal, L., & Dahiya, R. (2018). Bio-Organic Glycine Based Flexible Piezoelectric Stress Sensor for Wound Monitoring. . https://doi.org/10.1109/icsens.2018.8589588

The application of controlled mechanical stress on a wound site can accelerate the wound healing by improving the cellular proliferation during tissue regeneration. To facilitate this there is need to monitor the applied stress around the wound site... Read More about Bio-Organic Glycine Based Flexible Piezoelectric Stress Sensor for Wound Monitoring.

Contact-Printing of Zinc Oxide Nanowires for Chemical Sensing Applications (2018)
Conference Proceeding
Nunez, C. G., Manjakkal, L., Liu, F., & Dahiya, R. (2018). Contact-Printing of Zinc Oxide Nanowires for Chemical Sensing Applications. . https://doi.org/10.1109/icsens.2018.8589516

This paper presents a new method for printing zinc oxide (ZnO) nanowires (NWs) and their analysis for chemical sensing applications. High-crystal quality ZnO NWs are synthesized by chemical vapour transport (CVT) technique and directly transferred an... Read More about Contact-Printing of Zinc Oxide Nanowires for Chemical Sensing Applications.

Electrochemical sensors with screen printed Ag|AgCl|KCl reference electrodes (2017)
Conference Proceeding
Manjakkal, L., Pascual, C. L., & Dahiya, R. (2017). Electrochemical sensors with screen printed Ag|AgCl|KCl reference electrodes. In 2017 IEEE SENSORS. https://doi.org/10.1109/icsens.2017.8234044

This paper presents the printed thick film Ag|AgCl|KCl reference electrodes for electrochemical or biosensors application and theirelectrochemical and analytical performance. The reference electrode exhibits a stable potential against standard glass... Read More about Electrochemical sensors with screen printed Ag|AgCl|KCl reference electrodes.

Stretchable pH sensing patch in a hybrid package (2017)
Conference Proceeding
Dang, W., Manjakkal, L., Lorenzelli, L., Vinciguerra, V., & Dahiya, R. (2017). Stretchable pH sensing patch in a hybrid package. In 2017 IEEE SENSORS. https://doi.org/10.1109/icsens.2017.8234297

This work presents a novel stretchable pH sensing patch to detect the pH in body fluid which is one of the most important parameters in human health monitoring. The sensing patch is a hybrid package comprising of polyimide/gold-based stretchable inte... Read More about Stretchable pH sensing patch in a hybrid package.