Izbrane teme sodobne fizike in matematike
Samourejanje molekul je obetavna strategija za izdelavo nanoelektronskih elementov, nanosenzorjev in drugih naprav. V članku so predstavljene osnove samourejanja molekul na površinah v ultravisokem vakuumu. Pri procesu samourejanja pri sobni temperaturi so molekule gibljive, zato mora biti adsorbcijska energija molekul večja od njihove kinetične energije, da je adbsorpcija mogoča. Pri samourejanju pa igrajo pomembno vlogo še medmolekularne inte-rakcije ter interakcije molekul s substratom. Najpogostejše tehnike za karakterizacijo samourejenih plasti so vrstična tunelska mikroskopija, mikroskopija na atomsko silo in fotoelektronska spektroskopija rentgenskih žarkov.
Molecular self assembly offers a promising way of making nanoelectronic components, nanosensors and other devices. In the process of self assebly at room temperature, the molecules are too mobile, therefore the adsorption energy has to be grater than their kinetic energy, so that adsorption is even possible. Self assembly is governed not only by the interaction of molecules with the substrate but also by intermolecular interactions that can be substrate mediated. The most common techniques for the characterization of self assembled layers are scanning tunneling microscopy, atomic force microscopy and X-ray photoelectron spectroscopy.