All Outputs (77)

Flexible and Printed Potentiometric pH Sensor for Water Quality Monitoring (2021)
Presentation / Conference Contribution
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/fleps515

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.

Graphene–Graphite Polyurethane Composite Based Wristband Supercapacitor for Wearable Electronics (2021)
Presentation / Conference Contribution
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/f

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.

Connected Sensors, Innovative Sensor Deployment, and Intelligent Data Analysis for Online Water Quality Monitoring (2021)
Journal Article
Manjakkal, L., Mitra, S., Petillot, Y. R., Shutler, J., Scott, E. M., Willander, M., & Dahiya, R. (2021). Connected Sensors, Innovative Sensor Deployment, and Intelligent Data Analysis for Online Water Quality Monitoring. IEEE Internet of Things, 8(18), 1

The sensor technology for water quality monitoring (WQM) has improved during recent years. The cost-effective sensorised tools that can autonomously measure the essential physical-chemical-biological (PCB) variables are now readily available and are... Read More about Connected Sensors, Innovative Sensor Deployment, and Intelligent Data Analysis for Online Water Quality Monitoring.

Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications (2021)
Journal Article
Pullanchiyodan, A., Manjakkal, L., & Dahiya, R. (2021). Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications. IEEE Sensors Journal, 21(23), 26208-26214. https://doi.org/10.1109/jsen.2021.3058894

This paper presents a fabric based asymmetric supercapacitor (ASC) with metal coated cloths as the electrode and the current collector. Graphite paste printed on silver coated textile (Berlin) is used as the negative electrode and nickel/copper/silve... Read More about Metal Coated Fabric Based Asymmetric Supercapacitor for Wearable Applications.

Natural Jute Fibre‐Based Supercapacitors and Sensors for Eco‐Friendly Energy Autonomous Systems (2021)
Journal Article
Manjakkal, L., Franco, F. F., Pullanchiyodan, A., González‐Jiménez, M., & Dahiya, R. (2021). Natural Jute Fibre‐Based Supercapacitors and Sensors for Eco‐Friendly Energy Autonomous Systems. Advanced Sustainable Systems, 5(3), Article 2000286. http

Environmentally friendly energy devices and systems are of increasing interest for the circular economy and sustainable information and communications technology. To this end, an energy-autonomous system comprised of natural jute fiber-based supercap... Read More about Natural Jute Fibre‐Based Supercapacitors and Sensors for Eco‐Friendly Energy Autonomous Systems.

Metal Coated Fabric Based Supercapacitors (2020)
Presentation / Conference Contribution
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 Supercapacitor with Sweat Equivalent Electrolyte for Safe and Ecofriendly Energy Storage (2020)
Presentation / Conference Contribution
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 System

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.

Screen-Printed Flexible Carbon versus Silver Electrodes for Electrochemical Sensors (2020)
Presentation / Conference Contribution
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/f

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.

Flexible Potentiostat Readout Circuit Patch for Electrochemical and Biosensor Applications (2020)
Presentation / Conference Contribution
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:

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.

Glycine-based Flexible Biocompatible Piezoelectric Pressure Sensor for Healthcare Applications (2020)
Presentation / Conference Contribution
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 (FLEP

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.

Ultrathin Ion-Sensitive Field-Effect Transistor Chips with Bending-Induced Performance Enhancement (2020)
Journal Article
Vilouras, A., Christou, A., Manjakkal, L., & Dahiya, R. (2020). Ultrathin Ion-Sensitive Field-Effect Transistor Chips with Bending-Induced Performance Enhancement. ACS Applied Electronic Materials, 2(8), 2601-2610. https://doi.org/10.1021/acsaelm.0c00489

Flexible multifunctional sensors on skin or wearables are considered highly suitable for next-generation noninvasive health care devices. In this regard, the field-effect transistor (FET)-based chemical sensors such as ion-sensitive FETs (ISFETs) are... Read More about Ultrathin Ion-Sensitive Field-Effect Transistor Chips with Bending-Induced Performance Enhancement.

A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte (2020)
Journal Article
Manjakkal, L., Pullanchiyodan, A., Yogeswaran, N., Hosseini, E. S., & Dahiya, R. (2020). A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte. Advanced materials, 32(24), Article 1907254. https://doi.org/10.1002/a

A sweat-based flexible supercapacitor (SC) for self-powered smart textiles and wearable systems is presented. The developed SC uses sweat as the electrolyte and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the active electro... Read More about A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte.

Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors (2020)
Journal Article
Pullanchiyodan, A., Manjakkal, L., Dervin, S., Shakthivel, D., & Dahiya, R. (2020). Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors. Advanced Materials Technologies, 5(5), Article 190

Fabric-based supercapacitors have received considerable interest as energy storage devices for wearable systems. This work demonstrates the use of metal coated fabrics as the active material and current collector with nontoxic polyvinyl alcohol (PVA)... Read More about Metal Coated Conductive Fabrics with Graphite Electrodes and Biocompatible Gel Electrolyte for Wearable Supercapacitors.

Flexible potentiometric pH sensors for wearable systems (2020)
Journal Article
Manjakkal, L., Dervin, S., & Dahiya, R. (2020). Flexible potentiometric pH sensors for wearable systems. RSC Advances, 10(15), 8594-8617. https://doi.org/10.1039/d0ra00016g

There is a growing demand for developing wearable sensors that can non-invasively detect the signs of chronic diseases early on to possibly enable self-health management. Among these the flexible and stretchable electrochemical pH sensors are particu... Read More about Flexible potentiometric pH sensors for wearable systems.

Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications (2020)
Journal Article
Marsh, P., Manjakkal, L., Yang, X., Huerta, M., Le, T., Thiel, L., …Dahiya, R. (2020). Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications. IEEE Sensors Journal, 20(10), 5130-

This work presents a pH sensor platform combining the high performance of iridium oxide (IrOx) fabricated by cyclic voltammetry with inductively-coupled wireless (ICW) transmission. Data included presents flexible potentiometric pH sensors having IrO... Read More about Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications.

Metal oxides based electrochemical pH sensors: Current progress and future perspectives (2019)
Journal Article
Manjakkal, L., Szwagierczak, D., & Dahiya, R. (2020). Metal oxides based electrochemical pH sensors: Current progress and future perspectives. Progress in Materials Science, 109, Article 100635. https://doi.org/10.1016/j.pmatsci.2019.100635

Electrochemical pH sensors are on high demand in numerous applications such as food processing, health monitoring, agriculture and nuclear sectors, and water quality monitoring etc., owing to their fast response (

Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs (2019)
Journal Article
Dahiya, R., Yogeswaran, N., Liu, F., Manjakkal, L., Burdet, E., Hayward, V., & Jorntell, H. (2019). Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs. Proceedings of the IEEE, 107(10), 2016-2033. https://doi.org/10.1109/jproc.2019.2941366

Sensory feedback from touch is critical for many tasks carried out by robots and humans, such as grasping objects or identifying materials. Electronic skin (e-skin) is a crucial technology for these purposes. Artificial tactile skin that can play the... Read More about Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs.

Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate (2019)
Journal Article
Min, G., Manjakkal, L., Mulvihill, D. M., & Dahiya, R. S. (2020). Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate. IEEE Sensors Journal, 20(13), 6856-6862. https://doi.org/10.1109/jsen.2019.2938605

With electrical power generated from mechanical contact, triboelectric nanogenerators (TENGs) offer a promising route to realizing self-powered sensors. For effective usage, it is important to improve their limited power range (0.1–100 mW/cm 2 ) and... Read More about Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate.

Printed Temperature Sensor based on Graphene Oxide/PEDOT:PSS (2019)
Presentation / Conference Contribution
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

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.

Cloth Based Biocompatiable Temperature Sensor (2019)
Presentation / Conference Contribution
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.