Factors Affecting Oxidation Stability of a Deuterated Ester

Thermally Driven Elastic Micromachines

“…As one of the simplest models exhibiting broken time-reversal symmetry, Najafi and Golestanian proposed a three-sphere swimmer [3,4], in which three in-line spheres are linked by two arms of varying length. Recently, Pande et al and the present authors independently proposed a generalized three-sphere microswimmer in which the spheres are connected by two elastic springs [5,6].…”

“…In the previous three-sphere microswimmer models, either the arm lengths or the natural lengths of the springs were assumed to undergo prescribed cyclic motions [3][4][5][6]. Such active motions can lead to net locomotion if the swimming strokes are nonreciprocal.…”

“…In this letter, by using an elastic three-sphere micromachine [5,6], we suggest a new mechanism for locomotion that is purely induced by thermal fluctuations. To highlight this effect, we do not consider any prescribed motion of the natural lengths [6].…”

“…As schematically shown in Fig. 1, we consider a threesphere micromachine and take into account the elasticity in the internal spring motions [5,6]. This model consists of three hard spheres of radius a connected by two harmonic springs A and B with spring constants K A and K B , respectively.…”

Electronic Detection of Synthetic Lubricant Oxidative Breakdown

“…Several sensors were calibrated in 1982 and checked again in 1983 after having been used in studies of oxidation stability (6). Although the changes in the constants were sometimes quite large, the response curves did not change greatly, as shown in Fig.…”