Article
Green & Sustainable Science & Technology
Wenzheng Cai, Vesselina Roussinova, Vesselin Stoilov
Summary: This study proposes, designs, and tests a new concept of a small-scale piezoelectric wave energy harvester based on the acceleration-driven principle. Six piezoelectric generators placed in the enclosure are used as energy conversion devices, providing high-frequency response and the ability to withstand large strain. The device can operate at deployment sites with consistent medium/small wave energy flux and naturally float on the water surface. It is lightweight, cost-effective, and suitable for operation in remote rivers and lakes due to its self-generating capability.
Article
Engineering, Electrical & Electronic
Hiramoni Khatun, Dobbidi Pamu, Shashi Priya Balmuchu, Ningthoujam Somorjit Singh, Utpal Sarma
Summary: This study aims to fabricate a piezoelectric energy harvester using PDMS, ZnOnf, and PVDF. The addition of PVDF into the ZnOnf-PDMS composite enhances the piezoelectric activity and output power of the energy harvester. The results show that the addition of PVDF improves the thermal stability of the energy harvester.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Green & Sustainable Science & Technology
X. Cheng, P. K. Singh, A. Mishra, A. Tiwari, W. Ren
Summary: This article reviews the potential of wurtzite structures, especially intrinsic piezoelectric semiconductors, for energy harvesting at different scales and morphologies (3D, 2D, and 1D). The characteristics, synthesis methods, and application scope of wurtzite structures are discussed systematically, along with the opportunities and challenges in piezoelectric nanoenergy harvesting systems based on wurtzite structures. The study emphasizes the significance of wurtzite structures as candidates for renewable energy generation.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Instruments & Instrumentation
Simon Furnes, Marwan Al-Haik, Michael Philen
Summary: This study investigates the impact of combining zinc oxide nanowires (ZnO NWs) and a thin film of lead zirconium titanate (PZT) on the mechanical and energy harvesting performance of carbon fiber reinforced polymer composites beams. The synthesis techniques developed here enable the creation of energy-harvesting composite beams with ZnO NWs and PZT thin films. The addition of ZnO NWs, despite not being an exceptional piezoelectric material, enhanced the strength and damping parameter of the composite due to increased surface area and mechanical interlocking. The hybrid composite, consisting of both piezoelectric materials, showed a substantial increase in stiffness compared to the plain composite, and the PZT/ZnO NWs energy harvester exhibited significantly higher electric power gain compared to beams with only ZnO NWs or PZT.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Electrical & Electronic
Ryo Ichige, Nobuaki Kuriyama, Yohei Umino, Takuya Tsukamoto, Takaaki Suzuki
Summary: This study proposed a piezoelectric vibrational energy harvester with mechanical metamaterials for the elastic layer to achieve low resonance frequency and high-power output. Finite element analysis showed that the metamaterial PVEH with the smallest structure had a 16% decrease in resonance frequency and 100% increase in power generation compared to the one with the largest structure. The fabricated metamaterial PVEH exhibited a resonance frequency of 32 Hz and a maximum output power of 1.3 mu W, with a 48% reduction in resonance frequency and 3.2 times higher power output compared to conventional flat plate-type PVEH.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
J. R. Leppe-Nerey, M. E. Nicho, F. Z. Sierra-Espinosa, F. Hernandez-Guzman, M. Fuentes-Perez
Summary: Polymeric materials, such as PVDF, are being studied for macro sources of power in vehicles or asphalt. Blends of PVDF with PMMA were investigated to create low-cost, high-performance materials for energy harvesting. The 70 wt% PVDF/PMMA blend showed a linear response to normal stress.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yang Liu, Libo Ding, Le Dai, Xuan Gao, Hanzhou Wu, Shuhao Wang, Chenggang Zhuang, Ling Cai, Zhen Liu, Lisha Liu, Ji Zhang, Yaojin Wang
Summary: With the rapid development of self-powered electronics, there is an increasing demand for power sources with high power density and long lifespan. This research focuses on the fabrication of large-scale flexible piezoelectric energy harvesters using yttrium stabilized zirconia ceramic, demonstrating excellent performance and potential applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Analytical
Sreekumari Raghavan, Rishi Gupta, Loveleen Sharma
Summary: The conversion of ambient energy into usable electrical energy is crucial for low-power sensors in IoT and SHM. This paper presents a novel tunable piezoelectric vibration energy harvester that provides autonomous power to these sensors.
Article
Chemistry, Multidisciplinary
Taoufik Slimani Tlemcani, Camille Justeau, Kevin Nadaud, Daniel Alquier, Guylaine Poulin-Vittrant
Summary: In this study, a flexible piezoelectric nanogenerator (PENG) based on zinc oxide (ZnO) nanowires grown on a PDMS substrate was fabricated using hydrothermal synthesis. The electrical characterization and output performance of the ZnO nanowires-based flexible PENG were investigated, showing that adopting an ITO/ZnO seed layer structure can achieve higher electrical output. The proposed ZnO nanowires-based PENG structure provides a flexible and cost-effective solution for supplying portable electronics.
Article
Engineering, Electrical & Electronic
Satyaranjan Bairagi, Sourav Banerjee, Priydarshni Kalyaniyan, Gogulamudi Dhanalakshmi, Syed Wazed Ali
Summary: A hybrid piezoelectric-cum-triboelectric energy harvesting device was successfully fabricated using a casein/PVA nanofibrous web, showing good piezoelectric behavior and energy harvesting performance. The device generated output voltage and current through finger tapping and standard testing methods, demonstrating its practical use in various applications.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Analytical
Oleg Gaidai, Yu Cao, Yihan Xing, Junlei Wang
Summary: This study focuses on the bivariate statistics of the dynamic response of a piezoelectric galloping energy harvester under realistic environmental conditions. A novel general-purpose reliability approach is proposed, which can be applied to various dynamic systems, including micro-machines. The statistical analysis presented in this study can be used at the design stage to ensure the system's safety and reliability.
Article
Green & Sustainable Science & Technology
Gang Yu, Lipeng He, Jianwen Zhou, Lei Liu, Bangcheng Zhang, Guangming Cheng
Summary: A novel mirror-image rotating piezoelectric energy harvester with multiple resonant frequencies was proposed, broadening the bandwidth and establishing a mathematical model. Experimental results show that under certain parameters, the device has high power generation efficiency, and can quickly power other devices.
Article
Thermodynamics
Jun Wang, Zhiming Liu, Guangya Ding, Hongtao Fu, Guojun Cai
Summary: A novel watt-level road-compatible piezoelectric energy harvester (RPEH) was proposed and tested in laboratory and actual road conditions, showing high electrical productivity under different excitation. On an actual roadway, the RPEH successfully powered a 5-m-long LED-induced 300-lamp strip, demonstrating potential for car networking and intelligent transportation.
Article
Physics, Applied
Ugur Erturun, Adebayo A. Eisape, Sung Hoon Kang, James E. West
Summary: This study presents an energy harvester that combines a piezoelectric nanogenerator and an electret-based electrostatic generator, with the structure's mechanical impedance easily altered for optimal performance. The device showed a total volumetric power density of around 8.8μWcm(-3) and a total stored energy of about 50.2μJmin(-1), indicating its potential as a power supply for microelectronics in applications like wearables.
APPLIED PHYSICS LETTERS
(2021)
Article
Green & Sustainable Science & Technology
Lipeng He, Xiangfeng Gu, Yi Hou, Renhui Hu, Jianwen Zhou, Guangming Cheng
Summary: This paper presents a harvester that collects vibrational energy by utilizing the piezoelectric effect. The design incorporates a non-contact incentive model to avoid mechanical collision and wear, thus improving the device's service life.
Article
Engineering, Electrical & Electronic
Sumit Saha, Arpit Singh, Maryam Shojaei Baghini, Mayank Goel, V. Ramgopal Rao
Summary: In this article, a double-clamped nano-electromechanical switch (NEMS) with low stand-by power is proposed as an effective solution to leakage issues in scaled CMOS-based power gating (PG) in logic circuits. The NEMS structure achieves low pull-in voltage, low hysteresis, low turn-on delay, and subthreshold slope, enabling reduction in stand-by power dissipation in sub 10-nm CMOS technologies. Experimental results demonstrate significant leakage energy reduction compared to sub 10-nm CMOS based PG in ISCAS'85 benchmark circuits.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Engineering, Electrical & Electronic
Shuchi Kaushik, Tejas R. Naik, M. Ravikanth, Che-Hao Liao, Xiaohang Li, V. Ramgopal Rao, R. Singh
Summary: The use of self-assembled monolayers (SAMs) of organic molecules for passivation of surface states of Al0.5Ga0.5N epilayers resulted in a significant improvement in the performance of solar-blind photodetector. Experimental results confirmed the successful passivation of surface states, leading to a reduction in dark current and an increase in response speed.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Sumit Saha, U. Sajesh Kumar, Maryam Shojaei Baghini, Mayank Goel, V. Ramgopal Rao
Summary: This article analyzes the power gating technique using different nano devices, and demonstrates that NEMS gating is more effective than FinFETs and NWFETs-based gating under certain temperature conditions. The study shows that NEMS gating can achieve significantly higher energy gains compared to NWFETs and FinFETs as temperature increases. NWFETs require a longer breakeven cycle to become more energy-efficient than FinFETs due to its better gate control over the channel.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Engineering, Electrical & Electronic
Sumit Saha, Gaurav Saini, Maryam Shojaei Baghini, Mayank Goel, V. Ramgopal Rao
Summary: This study presents an improvement in efficiency in a low-voltage dc-dc boost converter for energy-harvesting applications using a sub-50-mV nano electro-mechanical switch (NEMS). The fabricated NEMS shows very low hysteresis, turn-on delay, and sub-threshold swing, making it a promising candidate for an ideal power switch. Compared to MOSFET switches in 0.18-mu m CMOS technology, the NEMS-based design demonstrates a 30% increase in efficiency at a switching frequency of 10 kHz for the same ON-state resistance, attributed to its low pull-in voltage and parasitic capacitances.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Multidisciplinary
Bharathkumar Mareddi, Hakseon Lee, Mohammad Awwal Adeshina, Daekyung Kang, Rongchen Qin, Muhan Choi, Jonghoo Park
Summary: We report a polarization-independent phase modulator based on a trilayer of birefringent materials. The proposed structure effectively eliminates the polarization dependence of the phase modulator without compromising its electro-optic properties, providing a simple method for developing a polarization-independent phase modulator without fabrication complexity.
Article
Engineering, Electrical & Electronic
Jiwanpreet Kaur Virk, Sonatan Das, R. S. Kaler, Hardeep Singh, Tapanendu Kundu
Summary: The evanescent wave absorption-based photonic sensing platform using D-shaped fiber optic probes for refractive index-mediated biosensors has been developed. The sensitivity of the bare probe was established by optimizing the active surface area and a linear correlation between sensing area and refractive index sensitivity was observed. Functionalized probes with spherical gold nanoparticles were demonstrated as a localized surface plasmon resonance (LSPR) monitoring platform. The biosensing property of this LSPR probe was tested using Immunoglobulin antibody and an exponential bimolecular binding kinetic was observed.
OPTICAL FIBER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Mohammad A. Adeshina, Hakseon Lee, BharathKumar Mareddi, Daekyung Kang, Abdulazeez M. Ogunleye, Hyunmin Kim, Taewan Kim, Muhan Choi, Hongsik Park, Jonghoo Park
Summary: Due to the advanced features brought by nanoparticle doping, liquid crystals doped with nanoparticles have great potential in various applications. This study focuses on utilizing the photothermal effect of reduced graphene oxide (rGO)-doped 5CB nematic liquid crystals (LC-rGO) to create an infrared (IR) detector that is not only sensitive to IR, but also capable of measuring temperature and energy deposited in the detector. The introduction of rGO doping significantly enhances IR absorption and converts light energy into thermal energy through the photothermal effect. By observing the color change of white light probe beam, induced by the changes in orientational order and birefringence of LC-rGO under IR irradiation, the intensity of the probe beam can be translated into temperature change and energy deposition in the detector. Moreover, applying an external voltage to the detector greatly enhances the photothermal responsivity by compensating for the anchoring energy of the LC. This research proposes a novel technology for detecting IR, temperature, and energy with visible light, which has the potential to develop large-area and high-resolution IR detectors using mature liquid crystal display technologies.
Article
Engineering, Electrical & Electronic
Sonatan Das, Bikash Mandal, V. Ramgopal Rao, Tapanendu Kundu
Summary: In this study, a U-bent fiber optic sensor (FOS) based on evanescent wave absorption was used to successfully detect Tomato leaf curl New Delhi virus (ToLCNDV) DNA. The sensor was developed by immobilizing gold nanoparticles on the amine-functionalized surface and attaching a short segment of the complementary DNA (cDNA) as the receptor probe. The attachment of cDNA was confirmed by monitoring the real-time change in absorption spectra. The study showed a linear correlation between the concentration of single-strand DNA (ssDNA) from ToLCNDV and the change in refractive index (RI), and the limit of detection was determined to be 50 +/- 10 ng/μL. This research demonstrates the potential of using this sensor as a portable tool for real-time detection of plant pathogens in multi-target environments.
OPTICAL FIBER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Shubham Saxena, Wasi Uddin, Sumit Sharma, Samaresh Das, V. Ramgopal Rao
Summary: Two-dimensional materials, such as tungsten diselenide (WSe2), possess unique properties and can have a tunable temperature coefficient of resistance (TCR) by manipulating the gate voltage. The TCR of WSe2 is approximately six times higher than that of molybdenum disulfide (MoS2) and 19 times higher than metallic thin films. The control of TCR in WSe2 can be achieved within a range of applied gate voltage, allowing for specific TCR values to be selected for various applications like bolometers, thermal sensors, and accelerometers.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Materials Science, Multidisciplinary
Sonatan Das, Akanksha Singh, V. Ramgopal Rao, Tapanendu Kundu
Summary: This study explores the potential of controllable thiol functionality in polymer thin films for optical sensing applications. An off-stoichiometry polymer platform was developed for plasmonic surface development, and the correlations between elastic moduli and optical properties were investigated. The unique surface functional characteristics of the polymer were utilized for gold-nanoparticle-immobilized plasmonic surface, and the covalent interactions between gold nanoparticles and thiols were observed using XPS measurements.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sonatan Das, Akanksha Singh, V. Ramgopal Rao, Tapanendu Kundu
Summary: The study focuses on the development of a semiconducting functional polymer with ferroelectric behavior by tuning the stoichiometry ratio of the moieties in order to create a new type of polymer photodetector. The device exhibits photocurrent generation and ferroelectric polarization, making it a promising candidate for single polymer-based field-effect transistors and functional photonic materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Vidula Palekar, Aniket Wankhede, Sonatan Das, Alok Verma
Summary: This paper presents the design and simulation of a gas cell for mid-infrared photoacoustic trace multi-gas sensing for environmental pollution monitoring. The resonance frequency and optimal position of the PA detector on the cell's surface have been simulated using COMSOL Multiphysics for Nitrogen gas, which has the maximum concentration in air. The goal is to develop a compact sensor design with a total cell volume of less than 10cc.
2022 WORKSHOP ON RECENT ADVANCES IN PHOTONICS (WRAP)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Amrit Patnaik, P. Geethu, Sonatan Das, Tapanendu Kundu
Summary: This work reports the fabrication of a multi-channel optical waveguide using the femto-second laser direct writing process, and explores its application for refractive index sensing. We envision that this platform can be used for potential multi-target sensing applications.
2022 WORKSHOP ON RECENT ADVANCES IN PHOTONICS (WRAP)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Soma Saha, Sonatan Das, Anindya Datta, Tapanendu Kundu
Summary: This study presents the optical reduction of graphene oxide using an Argon ion laser source of different wavelengths and investigates the dependency of reduction on laser wavelength and power. The photoresponse of the reduced graphene oxide-based device is tested, and the immobilization of gold nanoparticles on the surface of reduced graphene oxide is explored for potential plasmonic sensor applications.
2022 WORKSHOP ON RECENT ADVANCES IN PHOTONICS (WRAP)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Sonatan Das, Dilip Kumar Agarwal, Amrit Patnaik, Valipe Ramgopal Rao, Tapanendu Kundu
Summary: This study investigates the binding dynamics of gold nanoparticles on an amine-functionalized surface. It is found that higher molar concentration of gold nanoparticles leads to a shorter immobilization time. The density of immobilized nanoparticles is confirmed by SEM analysis. The research explores the role of selective LSPR surface in the development of plasmonic-based photonic sensing platforms.
2022 WORKSHOP ON RECENT ADVANCES IN PHOTONICS (WRAP)
(2022)
