We examine nickel silicide as a viable ohmic contact metallization for low-temperature, low-magnetic-field transport measurements of atomic-scale devices in silicon. In particular, we compare a nickel silicide metallization with aluminium, a common ohmic contact for silicon devices. Nickel silicide can be formed at the low temperatures (<400°C) required for maintaining atomic precision placemen...

This paper describes a new algorithm for determining all discrete contact symmetries of any differential equation whose Lie contact symmetries are known. The method is constructive and is easy to use. It is based upon the observation that the adjoint action of any contact symmetry is an automorphism of the Lie algebra of generators of Lie contact symmetries. Consequently, all contact symmetries...

A sample of 505 Internet sex offenders and 526 contact sex offenders were compared on a range of psychological measures relating to offense-supportive beliefs, empathic concern, interpersonal functioning, and emotional management. Internet offenders could be successfully discriminated from contact offenders on 7 out of 15 measures. Contact offenders were found to have significantly more victim ...

The height of the surface of a fluid in an annular tube is explored using a shooting method to solve a boundary value problem where the radii and the contact angles are given. The contact angles on the inner and outer tube surface need not be the same. These surfaces are then extended so that they are no longer graphs. The extended surfaces are shown to solve a boundary value problem over an an...

Some anthropologists have suggested prehistoric Old and New world contacts. Meggers, Evans, and Estrada are the most recent advocates, and their hypothesis of a landfall by Japanese fishermen on the coast of Ecuador seems to have been the causa belli of the attack by John Rowe on "doctrinaire diffusionism." In a response to Rowe, Jett and Carter (1966) suggest his level of absolute proof is the...

Formation of low-resistance metal contacts is the biggest challenge that masks the intrinsic exceptional electronic properties of two dimensional WSe2 devices. We present the first comparative study of the interfacial properties between monolayer/bilayer (ML/BL) WSe2 and Sc, Al, Ag, Au, Pd, and Pt contacts by using ab initio energy band calculations with inclusion of the spin-orbital coupling (...

We use a simple agency model to clarify and characterize the various avenues through which changes in the level of uncertainty impact the optimal strength of linear incentives. Instead of attempting to characterize di¤erent "types" of uncertainty, which has been the approach in the literature so far, we base our characterization on the link between uncertainty and the agent’s action choice. We ...

The overall dynamics of a multibody system is actually a multi-scale problem because it depends a great deal on the local contact properties (coefficient of restitution, friction, roughness, etc). In this paper we found that the briefly presented force-based theory of plane dynamics for a multibody system with unilateral contacts was appropriate for simulating detailed multi-contact situations ...

Direct tyre-road contact friction estimation is essential for future active safety systems. Friction estimation methods were proposed earlier for driving conditions in the presence of a slip angle or slip ratio. However, the estimation of friction from a freely rolling tyre is still an unsolved topic. This study uses three 3-axis accelerometers on the inner liner of a tyre to detect friction po...

[*] Dr. R. Vajtai, Prof. P. M. Ajayan Department of Mechanical Engineering and Materials Science Rice University, Houston, TX 77005 USA E-mail: [email protected] Dr. G. Toth, J. Mäklin, N. Halonen, J. Palosaari, J. Juuti Prof. H. Jantunen, Dr. K. Kordas Microelectronics and Materials Physics Laboratories Department of Electrical and Information Engineering University of Oulu, P.O. Box 4500...