Mixed ether bath for electrodeposition of aluminum

Anisole added to the bath mixture improves Brenner aluminum plating bath technique. Mixture has lower bath vapor-pressure and the electro-deposits obtained have greater physical strength than deposits from the Brenner bath

AA MS 09 Flynn Seal Presses Finding Aid

Description: Stephen Flynn discovered these two seal presses on Higgins Beach in Scarborough, Maine, in 1978. They were found in the remains of the Silver Sands Hotel, which had to be destroyed after damage caused by a storm. Two seal presses were from the Women\u27s Ku Klux Klan organizations of Augusta and Bath, Maine. The one from WKKK chapter of Augusta, Maine reads: “Women of the Ku Klux Klan; Capital City Klan; Klan No 11 Augusta, Maine.” In the center there is a shield with a cross and the letters W, K, K, K, at the top, bottom, and sides of the cross. The seal from WKKK chapter of Bath, Maine reads: “Women of the Ku Klux Klan; Bath Klan; Klan No 15 Bath, Maine.” There is also an image of a shield in its center (but no cross) with the letters W, K, K, and K. undated Size of Collection: 1 ft

Decoherence of a two-qubit system with a variable bath coupling operator

We examine the decoherence of an asymmetric two-qubit system that is coupled via a tunable interaction term to a common bath or two individual baths of harmonic oscillators. The dissipative dynamics are evaluated using the Bloch-Redfield formalism. It is shown that the behaviour of the decoherence effects is affected mostly by different symmetries between the qubit operator which is coupled to the environment and temperature, whereas the differences between the two bath configurations are very small. Moreover, it is elaborated that small imperfections of the qubit parameters do not lead to a drastic enhancement of the decoherence rates.Comment: 10 pages, 5 figure

Entropy of a Quantum Oscillator coupled to a Heat Bath and implications for Quantum Thermodynamics

The free energy of a quantum oscillator in an arbitrary heat bath at a temperature T is given by a "remarkable formula" which involves only a single integral. This leads to a corresponding simple result for the entropy. The low temperature limit is examined in detail and we obtain explicit results both for the case of an Ohmic heat bath and a radiation heat bath. More general heat bath models are also examined. This enables us to determine the entropy at zero temperature in order to check the third law of thermodynamics in the quantum regimeComment: International Conference on "Frontiers of Quantum and Mesoscopic Thermodynamics