Novel cold cathode materials and applications

One-dimensional (1D) ZnO nanostructures have been studied intensively and extensively over the last decade not only for their remarkable chemical and physical properties, but also for their current and future diverse technological applications. This article gives a comprehensive overview of the progress that has been made within the context of 1D ZnO nanostructures synthesized via wet chemical methods. We will cover the synthetic methodologies and corresponding growth mechanisms, different structures, doping and alloying, positioncontrolled growth on substrates, and finally, their functional properties as catalysts, hydrophobic surfaces, sensors, and in nanoelectronic, optical, optoelectronic, and energy harvesting devices.

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“…Field emission finds applications in photoelectric panel display, X-ray sources, and microwave devices [332].…”

Section: Field Emission Propertiesmentioning

confidence: 99%

One-dimensional ZnO nanostructures: Solution growth and functional properties

2011

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“…Traditionally, field emission is generated from micro-structured tips used as the cathodes for electron extraction. Field emission devices have found applications in field emission displays, vacuum microelectronics, satellite subsystems, mass spectrometers, and even electrodynamic space tethers [246,247]. As early as 1995, interference lithography was used to manufacture high density micro-field emitter arrays with submicron emitter spacing to improve field emission display performance and reduce manufacturing costs [156,248].…”

Section: Field Emission Devicesmentioning

confidence: 99%

Multi-Beam Interference Advances and Applications: Nano-Electronics, Photonic Crystals, Metamaterials, Subwavelength Structures, Optical Trapping, and Biomedical Structures

Burrow

Gaylord

2011

Micromachines

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Abstract:Research in recent years has greatly advanced the understanding and capabilities of multi-beam interference (MBI). With this technology it is now possible to generate a wide range of one-, two-, and three-dimensional periodic optical-intensity distributions at the micro-and nano-scale over a large length/area/volume. These patterns may be used directly or recorded in photo-sensitive materials using multi-beam interference lithography (MBIL) to accomplish subwavelength patterning. Advances in MBI and MBIL and a very wide range of applications areas including nano-electronics, photonic crystals, metamaterials, subwavelength structures, optical trapping, and biomedical structures are reviewed and put into a unified perspective.

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“…For practical field emission devices, the cathode materials are required to have low operating voltage, high emission current and density, uniformity, stability and long working life. Many kinds of nanostructured materials have been studied and potentially used as the electron emitters such as metal micro-tips, metal oxides, carbides and carbon nanostructures [4][5][6][7][8][9][10]. Among carbon nanostructures, carbon nanotubes (CNTs) possess stable chemical characteristic, excellent electrical and thermal conductivity, mechanical property and high aspect ratio, and therefore CNT-based emitters exhibit unique field emission performance.…”

Section: Introductionmentioning

confidence: 99%