Graphene and carbon black nano-composite polymer absorbers for a pyro-electric solar energy harvesting device based on LiNbO3 crystals

Battista, Luigi; Mecozzi, Laura; Coppola, Sara; Vespini, Veronica; Grilli, Simonetta; Ferraro, Pietro

doi:10.1016/j.apenergy.2014.09.035

Cited by 46 publications

(23 citation statements)

References 35 publications

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“…The pyroelectric field generated by the surface charges in pyroelectric crystals has been recently used for various self-powered micro/nanogenerator or sensors, such as, particle trapping, liquid microlenses, liquid dispensing, wettability patterning, and manipulating LC droplets on the substrate surface [182][183][184][185][186][187]. It has been also demonstrated that the broadband electromagnetic radiations could be converted into heat for generating an appreciable pyroelectric field by depositing a sheet carbon/graphene onto the pyroeletric substrates [188,189]. Recently, Zhang et al reported a novel all-optical switching concept based on supertwisted LCs and pyroelectric materials [190].…”

Section: Pyroelectric-hybridised Liquid Crystal Devicesmentioning

confidence: 98%

Self-activating liquid crystal devices for smart laser protection

Wang

2016

Liquid Crystals

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Lasers are now extensively used in a multitude of optical devices and photonic systems spanning from sensing, communication, entertainment, medical surgery to military applications. Direct accidental or intentional exposures to high power lasers may lead to severe temporary or even permanent harm of human eye, skin, or optical sensors. The effective laser protection and shielding are currently not only a subject of scientific research but also a potential public safety issue, therefore there is an urgent need to develop the intelligent laser protection devices for keeping human eyes, optical sensors, and other sensitive components from these unintended or intended damages by laser radiations without warning. Self-activating liquid crystal devices undoubtedly represent such an elegant example because they could be autonomously activated to block or attenuate the lasers when the laser intensity is higher than a maximum permissible exposure value. This review is devoted to summarising the up-to-date significant advances of selfactivating liquid crystal devices for potential smart laser protection, including twist-aligned nematic liquid crystal devices, liquid crystal cored waveguide fibre arrays, and photovoltaic/ pyroelectric-hybridised liquid crystal devices. Finally, the review concludes with the perspectives and challenges for the future development of self-activating liquid crystal devices. It is anticipated that this glimpse and further endeavours in the emerging field will help the researchers from different backgrounds towards the fabrication of highly efficient laser protection devices, their real-world widespread applications and beyond. ARTICLE HISTORY

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Section: Pyroelectric-hybridised Liquid Crystal Devicesmentioning

confidence: 98%

Self-activating liquid crystal devices for smart laser protection

Wang

2016

Liquid Crystals

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“…There exist other hybrid cells for energy harvesting combining multiple effects, such as the pyroelectric and piezoelectric effects as a complement of the triboelectric effect (displacement of electrical charge under frictional contact) . Nonpyro‐ and thermoelectric polymers have also been used to improve thermal to electrical efficiency in pyroelectric or thermoelectric materials . Thus, a nanocomposite of carbon black or graphene particles can be used as a coating for a LiNbO 3 crystals pyroelectric layer, which greatly increases solar radiation absorption [88a].…”

Section: Representative Energy‐harvesting Applicationsmentioning

confidence: 99%

“…Nonpyro‐ and thermoelectric polymers have also been used to improve thermal to electrical efficiency in pyroelectric or thermoelectric materials . Thus, a nanocomposite of carbon black or graphene particles can be used as a coating for a LiNbO 3 crystals pyroelectric layer, which greatly increases solar radiation absorption [88a]. Table shows a comparison of the discussed pyroelectric materials.…”

Section: Representative Energy‐harvesting Applicationsmentioning

confidence: 99%

Recent Progress on Piezoelectric, Pyroelectric, and Magnetoelectric Polymer‐Based Energy‐Harvesting Devices

et al. 2019

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Energy harvesting from the environment based on electroactive polymers has been increasing in recent years. Ferroelectric polymers are used as mechanical‐to‐electrical energy transducers in a wide range of applications, scavenging the surrounding energy to power low‐power devices. These energy‐harvesting systems operate by taking advantage of the piezoelectric, pyroelectric, and magnetoelectric properties of the polymers, harvesting wasted environmental energy and converting it mainly into electrical energy. There have been developed different nano‐ and micro‐scale power harvesters with an increasing interest for powering mobile electronics and low‐power devices, including applications in remote access areas. Novel electronic devices are developed based on low‐power solutions, and therefore, polymer‐based materials represent a suitable solution to power these devices. Among the different polymers, the most widely used in the device application is the poly(vinylidene fluoride) (PVDF) family, due to its higher output performance.

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“…At the circuit level, there are many promising low power techniques, such as power gating [Arora et al 2014], dynamic voltage and frequency scaling , and near-and subthreshold computing [Pinckney et al 2016;Li et al 2015]. At the device level, efforts have been spent on reducing leakage power consumption of transistors [Bardine et al 2014], and a great amount of power-harvesting devices are being designed and implemented to avoid the cost and scalability challenge of battery replacement in such large numbers [Klinefelter et al 2015;Battista et al 2014;Fadhil et al 2014]. Further efficiency can be achieved by using a storageless and converterless energy harvesting technique, where the harvested energy is directly supplied to the target IoT device [Lee and , and combining multiple harvesting sources to provide a more stable power supply [Heidari et al 2015;Ding et al 2016].…”

Section: Problem Description 5 (Energy Efficiency) Given An Iot Systmentioning

confidence: 99%

Fundamental Challenges Toward Making the IoT a Reachable Reality

Xue

Nazarian

et al. 2017

ACM Trans. Des. Autom. Electron. Syst.

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Constantly advancing integration capability is paving the way for the construction of the extremely large scale continuum of the Internet where entities or things from vastly varied domains are uniquely addressable and interacting seamlessly to form a giant networked system of systems known as the Internet-of-Things (IoT). In contrast to this visionary networked system paradigm, prior research efforts on the IoT are still very fragmented and confined to disjoint explorations of different applications, architecture, security, services, protocol, and economical domains, thus preventing design exploration and optimization from a unified and global perspective. In this context, this survey article first proposes a mathematical modeling framework that is rich in expressivity to capture IoT characteristics from a global perspective. It also sets forward a set of fundamental challenges in sensing, decentralized computation, robustness, energy efficiency, and hardware security based on the proposed modeling framework. Possible solutions are discussed to shed light on future development of the IoT system paradigm. . 2017. Fundamental challenges toward making IoT a reachable reality: A model-centric investigation.

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Graphene and carbon black nano-composite polymer absorbers for a pyro-electric solar energy harvesting device based on LiNbO3 crystals

Cited by 46 publications

References 35 publications

Self-activating liquid crystal devices for smart laser protection

Self-activating liquid crystal devices for smart laser protection

Recent Progress on Piezoelectric, Pyroelectric, and Magnetoelectric Polymer‐Based Energy‐Harvesting Devices

Fundamental Challenges Toward Making the IoT a Reachable Reality

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