A self-aligning latch-up mechanism in out of plane silicon microelectrode array for neural prosthesis

Pt/Co multilayers displaying perpendicular (out-of-plane) magnetic anisotropy and 100% perpendicular remanent magnetization are strong candidates as magnetic media for the next generation of magneto-optic recording devices. The magnetic coercivity, Hc, and uniaxial anisotropy energy, Ku, are two important materials parameters, among others, in the quest to achieving higher recording densities with acceptable signal to noise ratios (SNR). The relationship between Ku and Hc in these films is not a simple one since features such as grain boundaries, for example, can have a strong influence on Hc but affect Ku only in a secondary manner. In this regard grain boundary separation provides a way to minimize the grain-to-grain magnetic coupling which is known to result in larger coercivities and improved SNR as has been discussed extensively in the literature for conventional longitudinal recording media.We present here results from the deposition of two Pt/Co/Tb multilayers (A and B) which show significant differences in their coercive fields.

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Out-of-plane behavior of honeycombs under dynamic combined compressive and shear loading

DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading ◽

10.1051/dymat/2009059 ◽

2009 ◽

Cited By ~ 1

Author(s):

B. Hou ◽

A. Ono ◽

S. Abdennadher ◽

Y. L. Li ◽

S. Pattofatto ◽

...

Keyword(s):

Shear Loading ◽

Out Of Plane

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Piezo-Driven Vibrating Insertion Device for Microelectrode Array

IEEJ Transactions on Electronics Information and Systems ◽

10.1541/ieejeiss.129.25 ◽

2009 ◽

Vol 129 (1) ◽

pp. 25-31

Author(s):

Takahiro Noda ◽

Ryohei Kanzaki ◽

Hirokazu Takahashi

Keyword(s):

Microelectrode Array ◽

Insertion Device

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The Fabrication and Optical Characteristics of Out-of-plane Asymmetric Double Bar Metamaterial

IEEJ Transactions on Sensors and Micromachines ◽

10.1541/ieejsmas.137.363 ◽

2017 ◽

Vol 137 (11) ◽

pp. 363-370

Author(s):

Ai Okubo ◽

Yoshiaki Kanamori ◽

Kazuhiro Hane

Keyword(s):

Optical Characteristics ◽

Out Of Plane

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Anisotropy of Nanoindentation – a tool for the determination of nanocrystal orientation ?

MRS Proceedings ◽

10.1557/proc-779-w5.14 ◽

2003 ◽

Vol 779 ◽

Author(s):

David Christopher ◽

Steven Kenny ◽

Roger Smith ◽

Asta Richter ◽

Bodo Wolf ◽

...

Keyword(s):

Crystal Surface ◽

Scanning Force Microscopy ◽

Depth Range ◽

Dislocation Loops ◽

Force Microscopy ◽

Pile Up ◽

Out Of Plane ◽

Scanning Force ◽

Dynamics Simulations

AbstractThe pile up patterns arising in nanoindentation are shown to be indicative of the sample crystal symmetry. To explain and interpret these patterns, complementary molecular dynamics simulations and experiments have been performed to determine the atomistic mechanisms of the nanoindentation process in single crystal Fe{110}. The simulations show that dislocation loops start from the tip and end on the crystal surface propagating outwards along the four in-plane <111> directions. These loops carry material away from the indenter and form bumps on the surface along these directions separated from the piled-up material around the indenter hole. Atoms also move in the two out-of-plane <111> directions causing propagation of subsurface defects and pile-up around the hole. This finding is confirmed by scanning force microscopy mapping of the imprint, the piling-up pattern proving a suitable indicator of the surface crystallography. Experimental force-depth curves over the depth range of a few nanometers do not appear smooth and show distinct pop-ins. On the sub-nanometer scale these pop-ins are also visible in the simulation curves and occur as a result of the initiation of the dislocation loops from the tip.

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Single Cell Based Microelectrode Array Biosensors

MRS Proceedings ◽

10.1557/proc-773-n11.6 ◽

2003 ◽

Vol 773 ◽

Author(s):

Mo Yang ◽

Shalini Prasad ◽

Xuan Zhang ◽

Mihrimah Ozkan ◽

Cengiz S. Ozkan

Keyword(s):

Electrical Activity ◽

Single Cell ◽

Cellular Response ◽

Microelectrode Array ◽

Fast Fourier Transformation ◽

Chemical Agent ◽

Extracellular Potential ◽

Membrane Excitability ◽

Specific Chemical ◽

Chemical Agents

AbstractExtracellular potential is an important parameter which indicates the electrical activity of live cells. Membrane excitability in osteoblasts plays a key role in modulating the electrical activity in the presence of chemical agents. The complexity of cell signal makes interpretation of the cellular response to a chemical agent very difficult. By analyzing shifts in the signal power spectrum, it is possible to determine a frequency spectrum also known as Signature Pattern Vectors (SPV) specific to a chemical. It is also essential to characterize single cell sensitivity and response time for specific chemical agents for developing detect-to-warn biosensors. We used a 4x4 multiple Pt microelectrode array to spatially position single osteoblast cells, by using a gradient AC field. Fast Fourier Transformation (FFT) and Wavelet Transformation (WT) analyses were used to extract information pertaining to the frequency of firing from the extracellular potential.

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