Major vacuum equipment manufacturer ULVAC, Inc. has developed a lure coated with a polyimide film with a thickness of several hundred nanometers. The nanotechnoloy coating ensures that the lure keeps shining regardless of the viewing angle. When exposed to the natural light, the lure gets more colorful than the existing lures as if the lure itself emits colors. The surface of the lure is colored and glossy-finished and then coated with a polyimide film with high light transmission formed by vapor deposition polymerization. The hue is determined by the effect of interference of light and adjusted based on the relation between the thickness of the polyimide film and the wavelength of light. The hue of the lure can be varied like the hologram depending on the angle from which it is seen. Further, it can be provided with a rainbow gradation by controlling the film forming conditions of the polyimide film. Better fishing results can be achieved with the use of a rainbow-colored lure and the chance of catching fish can be raised to about 2.6 and 3 times, respectively, compared to the case where a lure without a polyimide coating is used.

Faster fish growth

Scientists from the Russian Academy of Sciences have reported that young carp and sturgeon exhibited a faster rate of growth (30% and 24% respectively) when they were fed nanoparticles of iron.

Fish pond cleaner

In swimming pools and fishponds algae removal and prevention is costly. Water cleaning product from Nevada-based Altair Nanotechnologies makes a product with 40 nm particles of a lanthanum-based compound which absorbs phosphates from the water and prevents algae growth. Tests haveto confirmed that nanoparticles will not harm fish and nanoparticle-laden run-off on human health or on the environment.