Licensing opportunity
Scientists at Cambridge University have developed a new type of cheap, durable, non-toxic and environmentally safe insect repellent coating for controlling termites, cockroaches and other pests such as ants and locusts. Surfaces coated with the material trick the feet of insects into lubricating themselves, preventing the insects from climbing.
The coating has been designed by Jan-Henning Dirks, Christofer Clemente and Walter Federle at the university’s Department of Zoology.
Insects are capable of clinging to almost any natural and artificial substrate, using an emulsion with properties similar to custard or ketchup. They secrete this fluid from pads located on the bottom of their feet.
The researchers discovered that the surface coating changes the properties of this fluid. As a consequence, the adhesive secretion turns into a lubricant and the insects start slipping.
Researcher Jan-Henning Dirks said, “We first came across these surface properties quite by accident, but soon we realised that this could actually be something really useful.”
Insects were able to climb a glass rod with a non-stick coating with ease, but insects trying to reach a slice of apple at the top of a glass rod coated with the new material slipped, their feet exerting only about 40 per cent of the friction forces they showed on the non-stick coating.
The researchers believe the coating has the potential to restrict the movement of many insects, including ants, cockroaches, termites and locusts. Despite its effectiveness and durability, the new surface coating also leaves insects unharmed.
“We are very excited by the potential of this completely new approach to pest control that has arisen from a basic research project into insect adhesion,” said Gillian Davis, Technology Manager at Cambridge Enterprise, the University’s commercialisation arm.
“We have patented the technology and are now seeking a commercial partner to work with the inventors to develop the technology.
“Surfaces at risk of infestation both inside and outside the home may benefit from the insect repellent coatings. From crop protection to pest-proof ventilation pipes, furniture and wellingtons, as well as insect-repellent food containers and baby bottles, the practical applications for use are endless.”
Cambridge Enterprise Limited: www.enterprise.cam.ac.uk
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