The rapid urbanisation and high population density of all nations requires the development of sustainable security systems at all times which can protect people and their belongings against burglaries.

Arunkumar Chandrasekhar

Department of Sensor and Biomedical Technology

School of Electronics Engineering

Vellore Campus

Vivekananthan V

Alluri N.R

Purusothaman Y

Gupta A

Kim S.-J.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of Materials Chemistry C

Water waves are a promising source of renewable energy. Their kinetic energy can potentially drive energy harvesters. Herein, we describe a fully packed spheroidal smart buoy hybrid generator (SB-HG) composed of triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG) for scavenging water-wave energy. Each of the energy harvesting components generated electrical outputs from the same wave motion. A position-tracking long-range (LoRa) device placed in the buoy enabled identification of the buoy location when it was placed in the sea for energy harvesting, navigation, and fishnet tracking purposes. A solar cell placed on the top of the buoy powered the device under calm wave conditions. The TENG and EMG components generated maximum electrical outputs of 100 V/2 μA and 20 V/15 mA, respectively. Combining the devices efficiently converted the kinetic energy of the waves into useful electrical energy, which was used to charge a commercial capacitor and lithium-ion battery. The charged battery drove the position-tracking LoRa device for a positioning application and demonstrated that the SB-HG device is an inexpensive and reliable candidate for ocean navigation systems. Our water-wave energy harvester is highly promising as a clean energy power source and as a self-powered sensor for various environmental monitoring systems. © 2019 Elsevier Ltd

Nano Energy

A fully packed spheroidal hybrid generator for water wave energy harvesting and self-powered position tracking

Zero-power consuming intruder identification system by enhanced piezoelectricity of K0.5Na0.5NbO3 using substitutional doping of BTO NPs

On-vehicle triboelectric nanogenerator enabled self-powered sensor for tire pressure monitoring

Journal of Applied Polymer Science

Polymer nanogenerators: Opportunities and challenges for large‐scale applications

The Journal of Physical Chemistry C

Direct In Situ Hybridized Interfacial Quantification to Stimulate Highly Flexile Self-Powered Photodetector

ACS Applied Materials & Interfaces

Biocompatible Collagen Nanofibrils: An Approach for Sustainable Energy Harvesting and Battery-Free Humidity Sensor Applications

Journal	Data powered by TypesetJournal of Materials Chemistry C
Publisher	Data powered by TypesetRoyal Society of Chemistry (RSC)
ISSN	2050-7526
Open Access	0