Over the past few decades we have learned a great deal about the
behavior of such materials as liquid crystals, emulsions and colloids,
polymers, and complex molecules. These materials, called "soft matter"
("matière fragile" in French), have neither the rigid structure and
crystalline symmetry of a solid nor the uniformity and disorder of a
fluid or a gas. They have unusual and fascinating properties: some
change their viscosity at our beck and call; others form layers of
two-dimensional liquids; some are polarized, their molecules all
oriented in the same direction and turning in unison at our command;
others make up the foams, bubbles, waxes, gums, and many other items we
take for granted every day. De Gennes, one of the world's leading
experts on these strange forms of matter, here addresses topics ranging
from soft-matter physics - the formation of rubber, the nature and uses
of gum arabic, the wetting and de-wetting of surfaces, and the
mysterious properties of bubbles and foams - to the activities of
science: the role of individual or team work, the relation of discovery
to correction, and the interplay of conscience and knowledge. In the
best tradition of science writing, this book teaches us about both our
world and ourselves.