EnSO project newsletter


EnSO “Energy for Smart Objects” project is focusing on autonomous micro energy sources (AMES) in the context of Internet of Things (IoT) smart objects emerging market. IoT is a concept where every day’s objects will be able to communicate together and are connected through Internet. A key element is the electronic hardware based on several building blocks, such as sensors, actuators, micro controllers, communication interfaces, power conditioning ICs, energy harvesters and storage Devices. These Smart objects have to be autonomous, easy to use and handle, as small as possible, robust and long lasting with a long operating life time! Whatever they will be, there is always a key ingredient for all the electronic systems which is the need to be powered with a minimum of energy.

More information on EnSO 2nd newsletter which is available on-line ! Click here to read.

New publications

Boubenia, A. S. Dahiya, G. Poulin-Vittrant, F. Morini, K. Nadaud, D. Alquier, A facile hydrothermal approach for the density tunable growth of ZnO nanowires and their electrical characterizations, Scientific Reports 7 (2017) 15187, 9 pp. Click here to read.

Nadaud, F. Morini, A. S. Dahiya, C. Justeau; S. Boubenia; K. P Rajeev, D. Alquier, G. Poulin-Vittrant, Double buffer circuit for the characterization of piezoelectric nanogenerators based on ZnO nanowires, Appl. Phys. Lett. 112 (2018) 063901 (5pp.). Click here to read.

S. Dahiya, F. Morini, S. Boubenia, K. Nadaud, D. Alquier, G. Poulin-Vittrant, Organic/Inorganic hybrid stretchable piezoelectric nanogenerators for self-powered wearable electronics, Advanced Materials Technologies (2017) 1700249, 11 pp. Click here to read.

New publication

Publication Date (Web): December 6, 2016

S. Dahiya, C. Opoku, G. Poulin-Vittrant, N. Camara, C. Daumont, E. G. Barbagiovanni, G. Franzò, S. Mirabella, D. Alquier, Flexible organic/inorganic hybrid field-effect transistors with high performance and operational stability, ACS Appl. Mater. Interfaces 9 (1) (2017) pp 573–584. Click here to read



The production of high quality semiconducting nanostructures with optimized electrical, optical and electromechanical properties is important for the advancement of next-generation technologies. In this context, we herein report on highly obliquely aligned single-crystalline zinc oxide nanosheets (ZnO NSs) grown via the vapor-liquid-solid approach using r-plane (01-12) sapphire as the template surface. The high structural and optical quality of as-grown ZnO NSs has been confirmed using high resolution transmission electron microscopy and temperature-dependent photoluminescence, respectively. To assess the potential of our NSs as effective building materials in high performance flexible electronics, we fabricate organic (parylene C) / inorganic (ZnO NS) hybrid field-effect transistor (FET) devices on flexible substrates using room temperature assembly processes. Extraction of key FET performance parameters suggest that as-grown ZnO NSs can successfully function as excellent n-type semiconducting modules. Such devices are found to consistently show very high on-state currents (Ion) > 40 µA, high field-effect mobility (µeff) > 200 cm2/Vs, exceptionally high on/off current modulation ratio (Ion/off) of around 109, steep sub-threhold swing (s-s) < 200 mV/decade, very low hysteresis and negligible threshold voltage shifts with prolonged electrical stressing (up to 340 min). The present study delivers a concept of integrating high quality ZnO NS as active semiconducting elements in flexible electronic circuits.

Keywords: Zinc oxide, nanosheets, organic / inorganic hybrid, field-effect transistors, flexible substrates

Power MEMS 2017

The 17th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications.

Meet us at Power MEMS 2017 Kanazawa, Japan.

The objective of the conference is to catalyze innovation related to miniaturization for power generation and energy conversion. Its topics of interest range from basic principles, to materials and fabrication, to devices and systems, to applications. All energy domains are of interest, including, but not limited to: electrical, fluidic, gravitational, hydraulic, magnetic, mechanical, nuclear, optical, piezoelectric, photovoltaic, pneumatic, thermal energy domains and x-ray.

Our abstract “Zinc oxide nanowire-parylene nanocomposite based stretchable piezoelectric nanogenerators for self-powered wearable electronics” was accepted for oral presentation.

Event date : Nov. 14-17, 2017