The chemisorption of N-methyl-aza-2,2,4-trimethylsilacyclopentane from either the solution or the vapor phase produces monolayer films on silicon (oxide) substrates. The formation of a covalent siloxane linkage to the surface by this adsorbate is accompanied by ring opening, which produces no byproduct. The resulting secondary amine reacts with maleic anhydride to produce a carboxylic acid-terminated surface, accompanied by the formation of a stable amide bond. These reactions and their products were characterized by a combination of optical ellipsometry, contact-angle goniometry, and X-ray photoelectron spectroscopy.

The roll-off angle of hexadecane droplets was measured on a family of nearly ideal surfaces having similar structures but different interfacial free energies. The variation in interfacial energy was reflected in the contact angles of hexadecane, which provide a measure of the work of adhesion. The hysteresis in the contact angle on these surfaces was low and approximately constant, thereby approximately removing it as a variable and allowing for an assessment of any dependence of the roll-off angle on work of adhesion directly. The results revealed no such dependence, consistent with the descriptions of early researchers in this area.

The facile self‐assembly of monolayers films derived from N‐(2‐aminoethyl)‐2, 2, 4‐trimethyl‐1‐aza‐2‐silacyclopentane on silicon/silicon dioxide substrates from the solution phase is reported. This adsorbate reacts with silanols at the surface to produce a covalent siloxane linkage to the substrate via ring‐opening and produces no byproduct(s). The resulting diamine surface reacts with maleic anhydride or succinic anhydride to produce the corresponding carboxylic‐acid terminated surfaces. The kinetics of these reactions and their products were characterized by contact‐angle goniometry, optical ellipsometry, and X‐ray photoelectron spectroscopy.

This paper deals with S-matrix, born first approximation, amplitude, and differential cross-section (DCS), using Volkov function and Taylor series expansion in laser field, scattering. Equation (30) copes-with DCS and Equation (36) deals with S-matrix, with different parameters, moreover, both equations contain real and imaginary parts. The DCS increases with increasing angle and polarizabilities, constant with dipole distance for both emission and absorption of single-photon. The DCS for both emission and absorption is responded to low incidence energy (30 eV -60 eV) and photon energy (15 eV) while at high energy only emission and absorption are responded for DCS. The DCS between absorption and emission of a photon with angle variation, dipole distance, and atomic polarizabilities was found 1.098 a.u. 2 and at high incidence, energies were found 0.1 a.u. 2 .