Flexible electronic-paper active-matrix displays

A 100-um-thick 320 x 240-pixel active-matrix display integrated into a functional-device prototype is presented. The active matrix is composed of alternating layers of organic materials and gold. A six-mask photolithographic process is used. An electrophoretic electronic imaging film is laminated on top of the active matrix. The display is bendable to a radius of 7.5 mm for more than 30,000 repetitions

Flexible electronic-paper active-matrix displays

A QVGA active-matrix backplane was produced on a 25-um thin plastic substrate. A four-mask photolithographic process was used. The insulator layer and the semiconductor layer were organic material processed from solution. This backplane was a combination of the electrophoretic display effects supplied by SiPix and E-Ink Corp., resulting in electronic-paper displays with a thickness of 150 and 100 um, respectively; this is the world's thinnest active-matrix display ever made

An 8b organic microprocessor on plastic foil

We introduce a microprocessor made by organic thin-film transistors processed directly onto flexible plastic foil. This is a direct realization of a microprocessor by thin-film technology, i.e., without transfer, on plastic. It paves the way to equip mundane supports and objects with low-cost computing power. We also demonstrate the correct execution of a digital signal-processing task, namely increasing the accuracy of a repetitive digital input by time-averaging. © 2011 IEEE

29 Si-Nuclear magnetic resonance on the etching products of silicon in potassium hydroxide solutions

We present results of 29Si-nuclear magnetic resonance experiments on a large number of KOH solutions in which silicon has been dissolved. The goal of the experiments is to clarify the chemical composition of concentrated alkaline solutions after etching of silicon. It is confirmed that the initial etching product of wet-chemical etching of silicon in KOH is a silicate monomer. Increasing the silicon content of the solution gives rise to silicate polymerization products. The often reported aging of etching solutions is due to silica in the etchan

A 13.56 MHz RFID system based on organic transponers

RFID tags based on organic transistors are described, discussing in detail the IC blocks used to build the logic and the radio. Tags energized and read out at 13.56 MHz, de facto standard frequency for item-level identification, have been tested and enabled for the first time multiple-object identification, using different 6-bit codes. A complete 64-bit transponder, the most complex organic RFID tag reported to date, operates at 125 kHz and employs 1938 transistor

Ground-state wave function of Plutonium in PuSb as determined via X-ray magnetic circular dichroism

Measurements of x-ray magnetic circular dichroism (XMCD) and x-ray absorption near-edge structure (XANES) spectroscopy at the Pu M4,5 edges of the ferromagnet PuSb are reported. Using bulk magnetization measurements and a sum rule analysis of the XMCD spectra, we determine the individual orbital [μL = 2.8(1)μB/Pu] and spin moments [μS = −2.0(1)μB/Pu] of the Pu 5f electrons. Atomic multiplet calculations of the XMCD and XANES spectra reproduce well the experimental data and are consistent with the experimental value of the spin moment. These measurements of Lz and Sz are in excellent agreement with the values that have been extracted from neutron magnetic form factor measurements, and confirm the local character of the 5f electrons in PuSb. Finally, we demonstrate that a split M5 as well as a narrow M4 XMCD signal may serve as a signature of 5f electron localization in actinide compounds.JRC.E.6-Actinide researc

A rollable, organic electrophoretic QVGA display with field-shielded pixel architecture

A 100-um thin QVGA display was made by combining a 25-um thin organic transistor active-matrix backplane with an electrophoretic display film. High contrast and low crosstalk was achieved by the addition of a field shield to the backplane. The display can be bent repeatedly to a radius of 2 mm without any performance loss. Extended mechanical tests at a radius of curvature of 7.5 mm show that the display can be rolled at least 30,000 times without noticeable degradation