IKZ Summer School: 'Towards Understanding Crystal Growth on an Atomic Scale', 12.-14.10.2016

Leibniz-Institut für Kristallzüchtung, Berlin, Deutschland

Mittwoch, 12. Oktober - Freitag, 15. Oktober 2016

Gastdozent: Elias Vlieg, Radboud University, IMM, Nijmegen, Niederlande

Die Summer School ist eine Weiterbildungsveranstaltung für die Mitarbeiter des Leibniz-Institutes für Kristallzüchtung. Jedoch sind interessierte Studenten und Wissenschaftlern, vor allem des Wissenschafts-Campus' Berlin-Adlershof, willkommen. Für Rückfragen oder Interesse an der Summer School, senden Sie bitte eine Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!.

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Inhalt der Summer School

The growth of crystals, whether this is a large and highly-perfect silicon boule or powder-like material of an active pharmaceutical ingredient, always takes place at the interface with its growth medium and (nearly) always atom by atom (or molecule by molecule). A complete understanding of crystal growth, and a subsequent control of the crystal properties, therefore requires an atomic-scale knowledge of the processes and structure at the interface. This series of lectures describes attempts to understand several topics from this atomic-scale perspective.
The faceted nature of a crystal (like quartz) makes anyone curious about the origin of this shape and understanding and predicting the morphology (habit) of a crystal is, therefore, a very classic subject. Both old and new models for this will be discussed.
At the growth interface, both the crystal and the growth medium will typically have a structure that is different from the bulk. Assessing such interfaces, in particular when growing from a solution or melt, is quite difficult, but a combination of techniques like Atomic Force Microscopy, computer simulations, and X-ray diffraction, has yielded significant insights. A number of examples will be discussed, including the ordering of Ga at the GaN-Ga interface at high pressure and temperature as observed using high-energy X-rays from synchrotron radiation sources.
In many applications, one aims to grow highly perfect crystals. In the case of protein crystals, the perfection is needed to achieve a high resolution of the protein structure. Growth without convection has several advantages in this context and a number of routes to achieve convection-free growth will be discussed. The resulting slow growth leads to better crystals and to a reduced uptake of impurities. This thus also yields lessons for the growth of other types of crystals.
Nature is homochiral; for example, nearly all natural amino acids are left-handed. This not only raises the fundamental question of why nature made this particular choice but also has practical consequences for pharmaceutical ingredients because the left-handed version can have very different effects than the right-handed one. Crystallization is one route to obtain chirally pure material. In the last decade, a number of new and surprising routes have been found. In Viedma ripening, for example, grinding a slurry of left- and right-handed crystals lead to a complete conversion of all the solid material to single chirality. This process involves interesting growth routes in which growth appears to take place by the incorporation of small clusters

Anmeldung Summer School

  • Die Summer School ist eine Weiterbildungsveranstaltung für die Mitarbeiter des Leibniz-Institutes für Kristallzüchtung. Jedoch sind interessierte Studenten und Wissenschaftlern, vor allem des Wissenschafts-Campus' Berlin-Adlershof, willkommen. Bitte melden Sie sich per Email Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein! an. Bitte beachten Sie, dass die Anzahl der Teilnehmer für die Summer School auf max. 20 Teilnehmer beschränkt ist.
  • Die Teilnahme an der Summer School ist kostenlos. Kosten für Anreise, Unterkunft und Verpflegung der Teilnehmer wird nicht vom IKZ übernommen und ist von den Teilnehmern selbst zu tragen.

Zeitplan

    • Mittwoch, 12.10.2016,     10:00 - 12:00 Uhr: Morphology Prediction 
    • Mittwoch, 12.10.2016,     14:00 - 16:00 Uhr: Role of Surface and Interface Structure during Crystal Growth
    • Donnerstag, 13.10.2016, 10:00 - 12:00 Uhr: Growing Better Protein Crystals without Convection
    • Freitag, 14.10.2016,        10:00 - 12:00 Uhr: Crystallisation Routes to Single Chirality

CV Gastdozent Elias Vlieg

Elias Vlieg is a professor of Solid State Chemistry at the Institute for Molecules and Materials (IMM) at Radboud University, Nijmegen, The Netherlands.  The research theme of his group is the fundamental understanding of crystal growth, for which a wide range of experimental, computational and theoretical methods are applied to a wide range of crystals. His current interests include chiral separation, additives, nucleation, polymorphism, self-assembly and the atomic-scale structure of solid-liquid interfaces. As head of the Applied Materials Science group, he is further involved in the practical applications of III-V semiconductors for thin film solar cells, including a role as CEO of a small spin-off company.

Elias Vlieg_Summer School

Kontakt

Prof. Matthias Bickermann

Leibniz-Institut für Kristallzüchtung (IKZ)
Max-Born-Str. 2, 12489 Berlin, Germany
Telefon +49-30-6392-3047
Fax +49-30-6392-3003
Email: Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!

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