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December 2017
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  1. CFN Colloquium

    4 pm, Bldg. 735, 2nd Floor Seminar Room

    Hosted by: 'Alexei Tkachenko'

    Development of nanostructured materials has introduced revolutionary approaches for materials processing and electronic structure engineering. These materials can offer the advantages of crystalline inorganic solids combined with inexpensive solution-based device fabrication. I will discuss emerging advances in the surface chemistry of semiconducting nanostructures that are poised to enable advances in additive manufacturing of semiconducting and multifunctional materials. Specifically, I will discuss inorganic linkers that permit electronic coupling between the nanocrystals and new semiconducting "solders" that enable solution processing of high-quality inorganic semiconductors. I will also introduce a general chemical approach for photoresist-free, direct optical lithography of functional inorganic nanomaterials (DOLFIN). Examples of patterned materials include metals, semiconductors, oxides, and magnetic and rare earth compositions. No organic impurities are present in the patterned layers, which helps achieve good electronic and optical properties. The conductivity, carrier mobility, dielectric, and luminescence properties of optically patterned layers are on par with the properties of state-of-the-art solution-processed materials. The ability to directly pattern all-inorganic layers using a light exposure dose comparable to that of organic photoresists opens up a host of new opportunities for thin-film device manufacturing.

  2. CFNS Seminar

    4 pm, Small Seminar Room, Bldg. 510

    Hosted by: 'Nils Feege'

    The physics importance of diffraction and the importance of forward detectors for diffraction. We can look forward to studying gluons and the strong interaction using diffraction in eA collisions at an EIC. Understanding this physics will be challenging, however, and will hinge on the quality of our forward detector / interaction region design —- how well we look forward AT eRHIC (or JLEIC). After reviewing briefly the physics motivation, I will discuss the experimental challenges involved at eRHIC (and ATLAS ultraperipheral) and will outline the improved eA simulation effort underway to allow us to exploit this physics.

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