It seems to be useful to begin this short article with the following quote: ¨ with courageous simplification, one might assert that the chemistry of the last century was largely the chemistry of covalent bonding, whereas that of the present century is more likely to be the chemistry of noncovalent binding¨. There are different terms […]
Natural non-wetting structures, particularly lotus leaves (Fig. 1a), have inspired the development of synthetic liquid-repellent surfaces. These surfaces rely on the formation of a stable air–liquid interface, but present limited repellency to oils with high contact angle hysteresis, failure under pressure and inability to self-heal. The paper by Wong et al. presents a novel approach […]
One of the multiple tasks of quantum chemistry is the rationalization of the bonding between atoms to form molecules. In this vein, two main aspects are clearly distinguished: i) the binding energy, or the energy gained by the molecule when two atoms are bonded; and ii) the bond order (how many bonds are the responsible […]
One of the things we learn first, when we get in touch with chemistry, is how important the acidity or alkalinity of a given solution is. This is also and quite often our first affair with the chemical equilibrium, because the pH is nothing more than a viewpoint of the water ionization. We were taught […]
It is well known that an accurate and energetic laser shot can melt, ionize and excite the material in which the light is focused, creating very bright plasmas after the interaction. Valuable information can be obtained from the light emitted by the plasma, such as the elemental composition of the material itself or the environment […]