Abstract A perfect isotactic poly(methacrylic acid) ( it ‐PMAA) is synthesized and characterized by NMR spectroscopy. Surface pressure versus mean area per repeat unit π−A ) isotherms are recorded compared with atactic at ‐PMAA). ‐PMAA exhibits a isotherm, indicating the formation of stable Langmuir film. The isotherm has characteristic pseudo‐plateau π ≈11–14 m N −1 attributed to creation worm...

Alexander Duncan Langmuir was recruited by the late Joseph Mountin, as I (1. H. S.) was after World War II, with the challenge to explore new areas that related to public health. Mountin was a leader who gained fame by challenging the old order and anticipating future needs (1). He foresaw the need for an agency such as the Communicable Disease Center (now the Centers for Disease Control and Pr...

Although nanocrystals and nanowires have proliferated new scientific avenues in the study of their physics and chemistries, the bottom-up assembly of these small-scale building blocks remains a formidable challenge for device fabrication and processing. An attractive nanoscale assembly strategy should be cheap, fast, defect tolerant, compatible with a variety of materials, and parallel in natur...

This article presents a new formulation of the solution for fully nonlinear and unsteady planar flow of an electron beam in a diode. Using characteristic variables (i.e., variables that follow particle paths) the solution is expressed through an exact analytic, but implicit, formula for any choice of incoming velocity v(0), electric field E(0), and current J(0). For steady solutions, this appro...