linkedin post 2015-06-24 04:34:18

Uncategorized
DOUBLE FACED ROMAN GOD JANUS. "The “Janus” term has been extended to describe the “dissymmetrical entities” in general, including macromolecules, supramolecular assemblies, nanoparticles, and colloidal particles. In synthesis, it requires the break of symmetry in the first place to create the “Janus” feature." Breaking symmetry to induce novel properties. https://chenggroup.uakron.edu/files/2015/05/11-yiwenli-ja202906m.pdf View in LinkedIn
Read More

linkedin post 2015-06-26 04:42:01

Uncategorized
ENDLESS COMPLEXITY. "Nature exhibits endless systems where complex patterns emerge from a-priori structureless objects. For example, leaves and flowers exhibit rippled shapes even though their “vein structure” seems perfectly symmetric. Leaves and flowers are examples of thin bodies that exhibit symmetry breaking even in the absence of external forces." https://lnkd.in/eZr_2gy View in LinkedIn
Read More

linkedin post 2015-06-24 04:25:42

Uncategorized
ASYMMETRY. "In analogy to the double-faced Roman god Janus, De Gennes formally introduced in his Nobel lecture the concept of “Janus grains” to describe grains with two distinct sides. The essential idea is that a three-dimensionally dissymmetrical distribution of certain physical/chemical features, such as size, shape, bulk composition, and surface chemistry, shall lead to the formation of specific hierarchical structures with novel properties." https://lnkd.in/e7E4Mgw View in LinkedIn
Read More

linkedin post 2015-06-25 04:56:28

Uncategorized
BIOMIMICRY OF NACRE. "Stable electronic switches have been fabricated by stacking alternative layers of barium and strontium oxides into a superlattice that breaks inversion symmetry, rather like shell nacre iridescence is caused by calcium and organic material in periodic layers." https://lnkd.in/eneJeki View in LinkedIn
Read More

linkedin post 2015-06-23 04:10:53

Uncategorized
SYMMETRY AND ENTROPY. "A breaking of symmetry involves an abrupt change in the set of micro states a system can explore. This change has unavoidable thermodynamic implications. A shrinkage of the microstates set results in an entropy decrease, which eventually needs to be compensated by heat dissipation, and hence requires work," https://lnkd.in/etyZ3Pa View in LinkedIn
Read More

linkedin post 2015-06-25 04:50:00

Uncategorized
NANOPARTICLES ASYMMETRY. "How can a beam of light tell the difference between left and right? Tiny particles have now been coupled to a glass fiber. The particles emit light into the fiber in such a way that it does not travel in both directions, as one would expect. Instead, the light can be directed either to the left or to the right. This has become possible by employing a remarkable physical effect – the spin-orbit coupling of light. This new kind of optical switch has the potential to revolutionize nanophotonics." https://lnkd.in/eFB2gxW View in LinkedIn
Read More