Patchy proteins form a perfect lens

  title={Patchy proteins form a perfect lens},
  author={Tobias Madl},
Most lenses are imperfect: They fail to focus all rays to the same convergence point. In 1854, James Clerk Maxwell proposed a solution for this optical aberration (1). He argued that if the refractive index would decrease parabolically from the center of a spherical lens to its edge, rays would follow curved paths and focus each point on the spherical surface to the opposite point on the same surface. The eyes of fishes and decapod squid are such parabolic lenses, but it has remained unclear… CONTINUE READING