A monolayer of 2-amino-4,6-di(dodecylamino)-1,3,5triazine 1 transferred from barbituric acid solution onto a mica plate is observed by atomic force microscopy (AFM) to show regularly arrayed terminal methyl groups of 1 as a result of hydrogen-bond networking.We have recently reported multisite molecular recognition between multicomponent monolayers on water and flavin adenine dinucleotide (FAD) in water. 1 This result opened the possibility to control the alignment of component amphiphiles within a monolayer.2 We extended this concept one step further in the present study and examined extended hydrogen-bond network formation between a monolayer of 2-amino-4,6-di(dodecylamino)-l,3,5-triazine 17 and aqueous barbituric acid.

The behavior of self-excited chatter after an excitation is studied by introducing the new idea of a multiple regenerative effect. This considers not only the effect of one turn before, but that of two or more turns before. The analysis explains well some characteristics of the chatter, such as the finite amplitude after the onset, and the generation of chatter marks. Increase of the stability at low cutting speeds is also discussed in terms of a resistive force due to the relative motion between work and tool.

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