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Electron Emission Regimes of Planar Nano Vacuum Emitters

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Towards high brightness electron beams from multifilamentary Nb3Sn wire photocathode

Christoph Peter Hauri, Fernando Ardana Lamas

In order to find electron sources of low emittance and high quantum efficiency, single tip cathodes with a microstructured surface are investigated. Emission currents up to 310 A were obtained, by combining a 2 ns, 50 kV accelerating voltage pulse with a 2 ...

American Physical Society2013

Nanosized Optoelectronic Devices Based on Photoactivated Proteins

Giovanni De Micheli, Sandro Carrara, Danilo Demarchi, Gianluca Piccinini

Molecular nanoelectronics is attracting much attention, because of the possibility to add functionalities to silicon-based electronics by means of intrinsically nanoscale biological or organic materials. The contact point between active molecules and elect ...

Amer Chemical Soc2012

Measurement of nanograin orientations: Application to Cu interconnects

Cyril Cayron

Nowadays the orientation maps of polycrystalline material are necessary for a better understanding of, for example, the formation of voids in the interconnects of modern electronic devices. As new generation of devices has dramatically reduced in size, new ...

2011

New Insight on Bio-sensing by Nano-fabricated Memristors

Giovanni De Micheli, Sandro Carrara, Davide Sacchetto, Yusuf Leblebici

We report here on a new insight for bio-sensing based on the memristive effect of functionalized Schottky-barrier memristive silicon nanowire in dry environment. The device concept is discussed. Electrical measurements confirm the bio-detection by the narr ...

2011

Scanning Tunneling Luminescence of Pentacene Nanocrystals

Alexander Kabakchiev

Organic semiconductors are promising materials for future electronic and electroluminescence applications. A detailed understanding of organic layers and nano-sized crystals down to single molecules can address fundamental questions of contacting organic s ...

EPFL2010

The current-voltage characteristics of the Ni/InAlN/GaN Schottky diodes were measured at various temperatures in the range of 300-700 K. The experimental data were analyzed considering different current-transport mechanisms. From the analysis it follows th ...

2010

Electrically tunable molecules are highly attractive for the construction of molecular devices, such as switches, transistors, or machines. Here, we present a novel nanomechanical element triggered by an electrical bias as external stimulus. We demonstrate ...

2010

The down-scaling of conventional MOSFETs has led to an impending power crisis, in which static power consumption is becoming too high. In order to improve the energy-efficiency of electronic circuits, small swing switches are interesting candidates to repl ...

EPFL2010

Plasmon enhanced luminescence from fullerene molecules excited by local electron tunneling

Frédéric Rossel

This thesis reports on the optical properties of fullerene molecules forming nanoscale crystals grown on ultrathin NaCl films on Au(111) investigated by Scanning Tunneling Microscope (STM)-induced light emission spectroscopy. In this regard, an existing op ...

EPFL2009

Characterization of electron bunches from field emitter array cathodes for use in next-generation X-Ray free electron lasers

PSI is interested in developing an X-FEL as a companion radiation source to the existing Swiss Light Source. In order to achieve radiation wavelengths as low as 1 Å, the X-FEL requires excellent electron beam quality and high beam energy. The energy requir ...

EPFL2007