Earth Long-Wave Infrared Emission, New Ways to Harvest Energy

2015 ◽  
pp. 1-25
Author(s):  
Luciano Mescia ◽  
Pietro Bia ◽  
Onofrio Losito
Keyword(s):  
Low Cost ◽  
Dielectric Substrate ◽  
Infrared Emission ◽  
Long Wave ◽  
Challenges And Opportunities ◽  
Future Challenges ◽  
Recent Developments ◽  
Potential Applications ◽  
Long Wave Infrared ◽  
Thz Antennas

This chapter summarizes the physical properties of THz antennas, provides a summary of some of the most important recent developments in the field of energy harvesting of Earth long-wave infrared radiation, discusses the potential applications and identifies the future challenges and opportunities. In particular, a THz antenna is designed in order to transform the thermal energy, provided by the Sun and re-emitted from the Earth, in electricity. The proposed antenna is a square spiral of gold printed on a low cost dielectric substrate. Simulations have been conducted in order to investigate the behavior of the antenna illuminated by a circularly polarized plane wave with an amplitude chosen according to the Stefan-Boltzmann radiation law. Moreover, these THz antennas could be coupled with other components to obtain direct rectification of T radiation. As a consequence, these structures further optimized could be a promising alternative to the conventional photovoltaic solar cells.

Earth Long-Wave Infrared Emission, New Ways to Harvest Energy

2017 ◽  
pp. 1875-1899
Author(s):  
Luciano Mescia ◽  
Pietro Bia ◽  
Onofrio Losito
Keyword(s):  
Low Cost ◽  
Dielectric Substrate ◽  
Infrared Emission ◽  
Long Wave ◽  
Challenges And Opportunities ◽  
Future Challenges ◽  
Recent Developments ◽  
Potential Applications ◽  
Long Wave Infrared ◽  
Thz Antennas

This chapter summarizes the physical properties of THz antennas, provides a summary of some of the most important recent developments in the field of energy harvesting of Earth long-wave infrared radiation, discusses the potential applications and identifies the future challenges and opportunities. In particular, a THz antenna is designed in order to transform the thermal energy, provided by the Sun and re-emitted from the Earth, in electricity. The proposed antenna is a square spiral of gold printed on a low cost dielectric substrate. Simulations have been conducted in order to investigate the behavior of the antenna illuminated by a circularly polarized plane wave with an amplitude chosen according to the Stefan-Boltzmann radiation law. Moreover, these THz antennas could be coupled with other components to obtain direct rectification of T radiation. As a consequence, these structures further optimized could be a promising alternative to the conventional photovoltaic solar cells.

Overview of Approaches and Future Challenges for Development of Music Recommendation Socio-Technical Systems

2016 ◽  
pp. 121-145
Author(s):  
Sergej Lugovic
Keyword(s):  
Information Seeking ◽  
Hybrid Approach ◽  
Information Behavior ◽  
Music Recommendation ◽  
Knowledge Based ◽  
Challenges And Opportunities ◽  
Future Challenges ◽  
Recent Developments ◽  
Cognitive Information ◽  
Music Information

This paper analyses the position of music recommendations in the wider context of music information behavior research and proposes five music information behavior dimensions: socio-cognitive information experience, information seeking, information retrieval, recommendations, and content consumption and analysis. It examines different approaches in the development of music recommendation systems (RS) which are applicable to all types of web information resources. These approaches are classified as content-based, collaborative, demographic, knowledge-based, meta-data-based, emotion-based and context-based, while the hybrid approach to RS development combines two or more approaches into one. Also, recent developments in the domain of music recommendations are discussed in detail. Finally, challenges and opportunities for collaboration between the scientific and the commercial communities on the development of new RS models are being explored.

scholarly journals Visible to long-wave infrared chip-scale spectrometers based on photodetectors with tailored responsivities and multispectral filters

Nanophotonics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 3197-3208 ◽  
Author(s):  
Jasper J. Cadusch ◽  
Jiajun Meng ◽  
Benjamin J. Craig ◽  
Vivek Raj Shrestha ◽  
Kenneth B. Crozier
Keyword(s):  
Consumer Electronics ◽  
Wearable Electronics ◽  
Ir Detector ◽  
Detector Arrays ◽  
Long Wave ◽  
Low Weight ◽  
Recent Developments ◽  
Infrared Spectral ◽  
Small Device ◽  
Long Wave Infrared

AbstractChip-scale microspectrometers, operational across the visible to long-wave infrared spectral region will enable many remote sensing spectroscopy applications in a variety of fields including consumer electronics, process control in manufacturing, as well as environmental and agricultural monitoring. The low weight and small device footprint of such spectrometers could allow for integration into handheld, unattended vehicles or wearable-electronics based systems. This review will focus on recent developments in nanophotonic microspectrometer designs, which fall into two design categories: (i) planar filter-arrays used in conjunction with visible or IR detector arrays and (ii) microspectrometers using filter-free detector designs with tailored responsivities, where spectral filtering and photocurrent generation occur within the same nanostructure.

scholarly journals Innovations in Poly(Vinyl Alcohol) Derived Nanomaterials

2020 ◽  
Vol 20 (3) ◽  
pp. 5-22
Author(s):  
A. Kausar
Keyword(s):  
Vinyl Alcohol ◽  
Low Cost ◽  
Metal Nanoparticle ◽  
Poly Vinyl Alcohol ◽  
Thermoplastic Polymer ◽  
Research Fields ◽  
Mechanical And Electrical Properties ◽  
Heat Stable ◽  
Challenges And Opportunities ◽  
Potential Applications

AbstractPoly(vinyl alcohol) (PVA) has been considered as an important commercial synthetic thermoplastic polymer. PVA is a low cost, reasonably processable, optically transmitting, heat stable, and mechanically robust plastic. PVA-based nanomaterials usually comprise of the nanocomposites (PVA/graphene, PVA/carbon nanotube, PVA/nanodiamond, PVA/metal nanoparticle) and nanofibers. The structural, optical, mechanical, and electrical properties of the PVA-based nanomaterials have been enhanced with nanofiller addition or nanostructuring. This review offers fundamentals and advanced aspects of poly(vinyl alcohol) and the derived nanomaterials. It highlights recent advances in PVA nanocomposites and nanofibers for potential applications. The PVA-based nanomaterials have been successfully employed in fuel cells, sensors, batteries, membranes, electronics, and drug delivery relevances. The challenges and opportunities to strengthen the research fields of PVA-based nanomaterials have also been presented.

Nanofabrication Techniques: Challenges and Future Prospects

2021 ◽  
Vol 21 (10) ◽  
pp. 4981-5013
Author(s):  
Usama Tahir ◽  
Young Bo Shim ◽  
Muhammad Ahmad Kamran ◽  
Doo-In Kim ◽  
Myung Yung Jeong
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Device Fabrication ◽  
Future Directions ◽  
3 Dimensional ◽  
Nano Fabrication ◽  
Innovative Products ◽  
Recent Developments ◽  
Potential Applications ◽  
Photonic Energy

Nanofabrication of functional micro/nano-features is becoming increasingly relevant in various electronic, photonic, energy, and biological devices globally. The development of these devices with special characteristics originates from the integration of low-cost and high-quality micro/nano-features into 3D-designs. Great progress has been achieved in recent years for the fabrication of micro/nanostructured based devices by using different imprinting techniques. The key problems are designing techniques/approaches with adequate resolution and consistency with specific materials. By considering optical device fabrication on the large-scale as a context, we discussed the considerations involved in product fabrication processes compatibility, the feature’s functionality, and capability of bottom-up and top-down processes. This review summarizes the recent developments in these areas with an emphasis on established techniques for the micro/nano-fabrication of 3-dimensional structured devices on large-scale. Moreover, numerous potential applications and innovative products based on the large-scale are also demonstrated. Finally, prospects, challenges, and future directions for device fabrication are addressed precisely.

Graphene Oxide Membrane: Recent Advancement in Waste Water Treatment and its Applications

2020 ◽  
Vol 5 (2) ◽  
pp. 111-157
Author(s):  
Nusrat Sahiba ◽  
Pankaj Teli ◽  
Prakash Prajapat ◽  
Shikha Agarwal
Keyword(s):  
Graphene Oxide ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Current Status ◽  
Future Research ◽  
Wastewater Management ◽  
Challenges And Opportunities ◽  
Future Challenges ◽  
Potential Applications ◽  
Oxide Membrane

World water resources are barely alive due to various factors such as rise in population, adverse changes in the environment and the effects of pollutants, which increase the demand for fresh-water. Numerous techniques have been developed to solve the problem of water inadequacy, but most of them are adverse with respect to the environment and economy. Graphene-oxide (GO) nanopore materials may be an effective solution for water-purification due to its properties of easy fabrication and modification. This next-generation membrane has high waterflux, selectivity, and permeability to selected molecules. In this discussion, we have covered the latest technologies and potential applications of GO for waterpurification, which shall help researchers to get quick ideas for future research to design and fabricate multi-layered GO membranes. This article gives a snapshot of current status and proposed strategies of graphene-membranes for water treatment with earlier information to wastewater management and stimulated progress in this area from 2017 to date. The future challenges and opportunities in this field have also been highlighted.

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