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Showing Spotlights 17 - 24 of 173 in category Electronics, NEMS (newest first):


Reversibly bistable materials could revolutionize flexible electronics

flexible_electronicsRollable displays and other flexible, stretchable electronic systems are often enabled by the successful integration of nanostructured materials. Most commercially available flexible electronic circuits and devices are fabricated on flexible plastic substrates, such as polymeric amides, PEEK polymers, or transparent conductive polyester films. Although these substrates can be easily bent and rolled up, they cannot be used to fabricate rollable display-integrated gadgets that are fixed at a rigid perpendicular position on their own. To overcome this issue, researchers have now used a reversibly bistable material to demonstrate flexible electronics.

Posted: Oct 26th, 2015

A stretchable far-field communication antenna far wearable electronics

stretchable_antennaThe age of wearable electronics is upon us as witnessed by the fast growing array of smart watches, fitness bands and other advanced, next-generation health monitoring devices such as electronic stick-on tattoos. In order for these wearable sensor devices to become fully integrated into sophisticated monitoring systems, they require wireless interfaces to external communication devices such as smartphones. This requires far-field communication systems that, like the sensor systems, perform even under extreme deformations and during extended periods of normal daily activities.

Posted: Oct 9th, 2015

Suppressing flicker noise in graphene boron nitride heterostructure field-effect transistors

graphene_HFETThe noise level in devices with graphene and other two-dimensional (2D) materials has to be reduced in order to enable their practical applications. It will not be possible to build graphene-based communication systems or detectors until the noise spectral density is decreased to the level comparable with the conventional state-of-the-art transistors.Researchers have now demonstrated that the electronic noise in graphene devices can be strongly suppressed if a graphene channel is encased between two layers of hexagonal boron nitride.

Posted: Jul 27th, 2015

Towards self-powered electronic papers

nanopaperAn international research team has designed and demonstrated novel self-powered human-interactive transparent nanopaper systems, utilizing transparent nanopaper as base material. This nanopaper system is based on an electrostatic induction mechanism and a dielectric material. That makes them self-powered, i.e. able to operate without the need for external power. The basic working mechanisms of the resulting devices are electrostatic induction effects caused by the retaining charges.

Posted: Jul 13th, 2015

Nanoelectronics on textile, paper, wood and stone

flexible_electronicsResearchers have developed a simple double-transfer printing technique that allows them to integrate high performing electronic devices - featuring state-of-the-art, non-planar, sub-20nm FinFET devices - fabricated on novel flexible thin silicon sheets with several kinds of materials exhibiting complex, asymmetric surfaces including textile, paper, wood, stone, and vinyl. This process utilizes soft materials to integrate nonplanar FinFET and planar traditional MOSFET devices onto various wavy, curvilinear, irregular, or asymmetric surfaces.

Posted: Jul 9th, 2015

Flexible FeRAM fabricated with CMOS-compatible approach

flexible_electronicsResearchers have demonstrated the fabrication flexible ferroelectric random access memory (FeRAM) devices using state-of-the-art CMOS processes (sputtering, photolithography, and reactive ion etching). This bridges the existing gap between rigid inflexible semiconductor high performance, integration density, yield, and reliable electronics and highly flexible polymer/hybrid materials based relatively low performance electronics. This enables combining the best of two worlds to obtain flexible high performance electronics.

Posted: Jul 1st, 2015

Graphene electrodes revolutionize the scaling of piezoelectric NEMS resonators

NEMS_resonatorThe key challenges associated with the development of high performance MEMS and NEMS resonators for RF wireless communication and sensing applications are the isolation of energy-dissipating mechanisms and scaling of the device volume in the nanoscale size-range. Researchers show that graphene-electrode based piezoelectric NEMS resonators operate at their theoretical 'unloaded' frequency-limits, with significantly improved electromechanical performance compared to metal-electrode counterparts, despite their reduced volumes.

Posted: Jun 16th, 2015

Wearing single-walled carbon nanotube electronics on your skin

flexible_electronicsResearchers present materials and device design/fabrication strategies for an array of highly stable and uniform SWCNT-based stretchable electronic devices consisting of capacitors, charge-trap floating-gate memory units, and logic gates (inverters and NAND/NOR gates). The researchers' detailed material, electrical, and mechanical characterizations and theoretical analysis in mechanics provide useful insights in the design and development of SWCNT-based wearable electronic systems.

Posted: May 13th, 2015