These dots, each about five to six nanometres in size, show a very high conductivity when assembled in an ordered array, while maintaining their optical properties. Working with colleagues from the Zernike Institute for Advanced Materials at the Faculty of Science and Engineering, University of Groningen, Loi experimented with a method that allows the production of a metamaterial from a colloidal solution of quantum dots. ‘This is because it is difficult to create an ordered material from the dots.’ Ordered layer And when dots are combined, the assembly often loses the unique optical properties of individual dots, or, if they do maintain them, their capacity to transport charge carriers becomes very poor’, explains Loi. ‘However, a single dot does not make a device. This is a useful property for making detectors, or a switch for telecommunications. Quantum dots of PbSe (lead selenide) or PbS (lead sulphide) can convert shortwave infrared light into an electrical current. The metamaterial is described in the journal Advanced Materials, published on 29 October. Now, a team led by University of Groningen professor of Photophysics and Optoelectronics, Maria Antonietta Loi, has succeeded in making a highly conductive optoelectronic metamaterial through self-organization. During this process, the properties of the dots are often lost. However, to create functional devices, a large number of dots have to be combined into a new material. It is possible to accurately design the electronic properties of these dots just by changing their size. In addition, Wiley offers an optional Online Open service (typical cost: US $3,000), which allows the accepted article to be made freely available to the public immediately.Quantum dots are clusters of some 1,000 atoms which act as one large ‘super-atom’. Open Access Policyįor NIH-funded authors, manuscripts are deposited in PubMed to be made publicly available 12 months after publication. The author will be advised of their expected color cost contribution upon acceptance of their manuscript for publication. The extra costs associated with color figure reproduction are expected to be met in part by the author. Time from submission to first decision after peer review Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.
In its second decade as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology.
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