A research team at Northwestern University used the strong attraction between two small organic molecules to create long crystals with ideal ferroelectric properties. This material has a strong memory and is expected to become a cheap and easy-to-make computer and Application materials for mobile phone memory applications (including cloud computing). The research results were published in the latest issue of Nature.
The special varieties of conventional ferroelectric materials polymers and ceramic materials are complicated and expensive to produce. The new compounds are simple and low-cost, and can be quickly and flexibly made into light-weight and scalable new electronic materials, including computer memory, sensing devices, solar energy systems, and nanoelectronic equipment.
The characteristics of the new supramolecular crystal material do not come from the molecule itself, but from the repeated repeated alternating interaction between two small organic molecules, prompting them to self-assemble into an ordered network. At room temperature rather than the temperature lower than liquid nitrogen before, two complementary molecules attract each Other under the action of electrons, tightly forming a long crystal. This crystal is based on a complex of pyromellitic diimide and naphthalene, pyrene, and tetrathiofulvalene derivative receptors, and forms a highly ordered 3D network based on hydrogen bonding.
Samuel Stop, a professor of chemistry, materials science and engineering, said the new discovery will serve as a new guide to designing ferroelectric materials. This molecular design allows us to invent an almost infinite library of ferroelectric materials. Ferroelectric materials have spontaneous polarization, which can reverse polarity under the action of an applied electric field. These two possible directions attract researchers to develop the material into computer memory: because a specific direction can correspond to 1, The other corresponds to 0.
Sir Fraser Studart, a professor of chemistry at the Faculty of Arts and Sciences at the University ’s Weinberg School, believes that the behavior of newly created materials is complex, but the superlattice structure is very simple, which is particularly helpful to solve the problem of cloud computing is very expensive Repair costs.
Facebook, Google, web-based email, and other services all rely on volatile memory to store information in the cloud. When the power is turned off, the volatile memory will "forget" the information it holds, so the power must be kept constant. If a new type of ferroelectric material is used to develop a non-volatile memory, information can be retained even when the power is turned off. It is expected that if non-volatile memory is operated in cloud computing and electronic equipment in the United States, annual electricity costs will be saved by $ 6 billion.
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