Variation of Surface Charge along the Surface of Wool Fibers Assessed by High-Resolution Force Spectroscopy.

In this study, we have mapped the surface charge of wool fibers using chemically specific high-resolution force spectroscopy in order to better understand the dispersion of amino acids in relation to fiber morphology. The inter-surface forces between standard atomic force microscopy (AFM) probe tips (tip radius ~ 50 nm) functionalized with COOH and NH(3) terminated alkanethiol self assembling monolayers and the wool surface were used to estimate the surface charge per unit area using linear Poisson-Boltzmann-based electrostatic double layer theory. The positional measurement of nano-scale surface charge showed a correlation between the surface charge and fiber morphology, indicated that basic amino acids are located near the scale edges.

A lesbian-feminist journey through queer nation.

This article is an auto-ethnographical review of the political experiences and literary career of one of the early lesbian feminist critics and theorists. It poses the question: what does it mean to be shaped by one theoretical and political discourse (Lesbian Feminism) and then thrust by historical change into another (Queer Theory)? With the author's life and work as a frame and exemplar, it illustrates the development of lesbian feminist thought. Ultimately, it argues that the insights and values of Lesbian Feminism should not be suppressed by those of Queer Theory, and calls upon lesbian feminists to re-insert themselves into current scholarly and theoretical debates.