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Nanotechnology Spotlight

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Showing Spotlights 9 - 16 of 140 in category Electronics, NEMS (newest first):

 

Stretchable energy storage and conversion

flexible_electronicsStretchable energy storage and conversion devices are key components for the fabrication of complete and independent stretchable systems. A recent review summarizes the recent progresses in the developments of stretchable power sources including supercapacitors, batteries and solar cells. It discusses representative structural and material designs to impart stretchability to the originally rigid devices and analyze advantages and drawbacks associated with the various fabrication methods. It also presents summaries of the research progresses along with future development directions.

Posted: Mar 20th, 2014

Flexible silicon-on-polymer sub-20 nm FinFETs without performance loss

FinFETsFlexible electronics is a rising field in terms of research and potential application opportunities to obtain similar characteristics than today's prevailing rigid electronics components. In new work, researchers have demonstrated the semiconductor industry's most advanced device architecture - FinFET, a new generation of device architecture which Intel has adopted in 2011 in their microprocessors; these field effect transistors offer non-planar three-dimensional topology where the channels are vertically aligned in arrays of ultra-thin silicon fins bordered by multiple gates - in a flexible platform using only industry standard processes and keeping the advantages offered by silicon.

Posted: Mar 11th, 2014

Graphene yarns facilitate energy storage textiles

graphene_yarnResearchers report the fabrication of flexible, durable, and self-assembled graphene textile electrodes for supercapacitors using a novel wet-spinning approach of ultra large graphene oxide liquid crystals followed by heat-treatment to obtain graphene fibers. The key to producing such fibers and yarns is to preserve the large sheet size even after the reduction of GO while simultaneously maintaining a high interlayer spacing in between graphene sheets. These graphene yarns could lead the way to the realization of powerful next-generation multifunctional renewable wearable energy storage systems.

Posted: Mar 7th, 2014

Conductive nanomaterials for printed electronics applications

printed_electronicsThe term printed electronics refers to the application of printing technologies for the fabrication of electronic circuits and devices, increasingly on flexible plastic or paper substrates. Traditionally, electronic devices are mainly manufactured by photolithography, vacuum deposition, and electroless plating processes. In contrast to these multistaged, expensive, and wasteful methods, inkjet printing offers a rapid and cheap way of printing electrical circuits with commodity inkjet printers and off-the-shelf materials.

Posted: Feb 27th, 2014

Flexible and semitransparent silicon electronics (w/video)

flexible_electronicsResearchers have developed a low-cost generic batch process using a state-of-the-art CMOS process to transform conventional silicon electronics into flexible and transparent electronics while retaining its high-performance, ultra-large-scale-integration density and cost. This process relies on standard and cheap silicon (100) wafer and microfabrication techniques, which allows to fabricate high performing devices. Furthermore, it allows the recyclability of the wafer to produce several substrates with devices, making it economically attractive.

Posted: Feb 11th, 2014

Modulating molecular electronics with the help of chemical tailoring

molecular_electronicsExternal stimuli, such as light, mechanical force, magnetic field, electrical field and electrochemical potential, are all driving forces that can be utilized to modulate the structure or conformation of molecules, and therefore to affect the performance of functional molecular devices. In new work, researchers take advantage of synergetic modulation by multiple external controls to explore multi-modulable molecular devices with the help of chemical tailoring, which have not been addressed so far.

Posted: Jan 8th, 2014

Bioengineers use proteins to build a tunable memristor

memristive_deviceResearchers demonstrate a strategy for the fabrication of memristive nanodevices with stable and tunable performance by assembling ferritin monolayer inside a on-wire lithography-generated 12 nm gap. This work work uses the unique high iron loading capacity of Archaeoglobus fulgidus ferritin. The iron loading in the nanocages drastically impacts the performance of the memristive devices. The higher iron loading amount contributes to better memristive performance due to higher electrochemical activity of the ferric complex core.

Posted: Dec 16th, 2013

Flexible thermoelectric generator from bulk silicon

semitransparent_siliconSilicon offers a unique combination between mechanical and electrical properties making it one of the most developed materials in semiconductor industry. However, silicon is brittle and cannot be flexed, hindering its potential for high performance electronics that is flexible, stretchable or applied to irregular shapes. Researchers have now developed a pragmatic approach to achieve high performance integrated electronic systems, including thermoelectric energy harvesters, onto flexible silicon substrates.

Posted: Dec 11th, 2013