The 34,35 Al ␤ decays have been studied at the CERN online mass separator ISOLDE by ␤-␥, ␤-␥-␥, and ␤-n-␥ measurements in order to corroborate the low-level description of 34 Si and to obtain the first information on the level structure of the Nϭ21 isotope 35 Si. Earlier observed ␥ lines in 34 Al decay were confirmed and new ␥ transitions following both ␤ decay and ␤-delayed neutron emission have been established. The first level scheme of 35 Si includes three excited states at 910, 974, and 2168 keV. Indication is found for J ϭ(3/2) Ϫ and (3/2) ϩ for the first two excited states, respectively. Beta-decay half-life of T 1/2 ϭ38.6(4) ms and ␤-delayed neutron branching value P n ϭ41(13)% were measured unambiguously. The significance of the single-particle energy determination at Nϭ21, Zϭ14 for assessing the effective interaction in sd-f p shellmodel calculations is discussed and illustrated by predictions for different neutron-rich isotopes.

Intruder features in the island of inversion : The 33Mg case. Physical Review C, 64(5), Article 054313.

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We describe a fully programmable Electrostatic Tactile (ET) feedback system that delivers a range of tactile textures to a mobile display. The ET system is a robust, thin, and optically transparent structure that can be overlaid unobtrusively on top of a display screen. The system exploits the phenomenon of electrovibration to create a controllable frictional force between a user's fingertip and the surface. The system enables the realization of localized tactile information delivered to the user's skin directly, without moving parts. A tactile image is formed in accordance with the visual information displayed (virtual textures, tactile silhouettes, etc.). The magnitude and pattern of the frictional force on the display can be programmed to correspond to the images shown on the display and actual coordinates of the touch interaction in real time. This has been achieved using a variety of different materials, including those that are compatible with flexible devices.

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