Sobre Nós

A Quantum Design está ativa na América Latina desde 1998. Em 2010, o escritório latino-americano foi aberto no Brasil para atender às necessidades da grande e crescente base de pesquisa usando equipamentos da Quantum Design.

O escritório está completamente operacional, onde novos recursos estão sendo adicionados para facilitar as atividades para pesquisadores.

Estamos felizes em representar uma excelente linha de outras empresas de instrumentação científica para atender a América Latina.

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• Researchers develop new measurement method in molecular electronics In molecular electronics, single molecules are stretched between two electrodes to form an electrically conducting element in which molecular conductivity is then measured. Although the underlying method for this phenomenon, scanning tunneling microscopy, was awarded the Nobel Prize more than thirty years ago, a major limitation remains: To access molecular conductivity, the molecules to be measured had to be permanently attached to the inorganic gold electrodes, usually via sulfur bridges. Leia mais (Inglês)
• Periodic Nanoarray of Graphene pn-Junctions on Silicon Carbide Obtained by Hydrogen Intercalation Graphene pn-junctions offer a rich portfolio of intriguing physical phenomena. They stand as the potential building blocks for a broad spectrum of future technologies, ranging from electronic lenses analogous to metamaterials in optics, to high-performance photodetectors important for a variety of optoelectronic applications. The production of graphene pn-junctions and their precise structuring at the nanoscale remains to be a challenge. In this work, a scalable method for fabricating periodic nanoarrays of graphene pn-junctions on a technologically viable semiconducting SiC substrate is introduced. Via H-intercalation, 1D confined armchair graphene nanoribbons are transformed into a single 2D graphene sheet rolling over 6H-SiC mesa structures. Due to the different surface terminations of the basal and vicinal SiC planes constituting the mesa structures, different types of charge carriers are locally induced into the graphene layer. Using angle-resolved photoelectron spectroscopy, the electronic band structure of the two graphene regions are selectively measured, finding two symmetrically doped phases with p-type being located on the basal planes and n-type on the facets. The results demonstrate that through a careful structuring of the substrate, combined with H-intercalation, integrated networks of graphene pn-junctions could be engineered at the nanoscale, paving the way for the realization of novel optoelectronic device concepts. Leia mais (Inglês)
• Assessing the impact of loss mechanisms in solar cell candidate antimony sulfide selenide As climate change continues to present itself as the most pressing threat facing our planet, researchers push to find efficient and clean alternatives to fossil fuels. Foremost among this research is harnessing free energy from the sun. Doing this efficiently requires advanced knowledge of the qualities of materials used in the construction of solar cells. Leia mais (Inglês)

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