Portrait of Abraham Sutro, senior rabbi of Muenster Portraits Men

Digital Image

Guttmann family portrait Portraits Couples

Abraham Guttmann and Feige Taube Guttmann nee Berlowitz with their children Noah, Helmut (Koffel), Sally (Steven), Heinz and Dorothea (Dola) and an unidentified young man

Passport portrait of Ruth Augusta Beatrice Goldschmidt Portraits Children

Born 1923?

Portrait of Ruth Augusta Beatrice Goldschmidt Portraits Women

Born 1923?

Studio portrait of Paula Goldschmidt née Harmelin; Leipzig Portraits Women

Born 1880?

Studio portrait of Paula Goldschmidt née Harmelin Portraits Women

Born 1880?

Studio portrait of Dorothea (Dola) Guttmann Portraits Women

Handwritten dedication on verso: To my very dear aunt and uncle, with love Dola Oct. '45

Oriented Nanocrystal Arrays of Selectable Polymorphs by Chemical Sculpture

Growing crystals with selected structure and preferred orientations oil seed substrates is crucial for a wide variety of applications. Although epitaxial or textured film growth of a polymorph whose structure resembles the seed crystal structure is well-known, growing oriented nanocrystal arrays or more than one polymorph, selectable one at a time, from the same seed has not been realized. Here, we demonstrate for the first time the exclusive growth of oriented nanocrystal arrays of two titania polymorphs from a titanate crystal by chemically activating respective polymorph-mimicking crystallographic facets in the seed. The oriented titania nanocrystal arrays exhibit significantly higher photocatalytic activity than randomly oriented polymorphs. Our approach of chemically sculpting oriented nanocrystal polymorph arrays could be adapted to other materials systems to obtain novel properties.

Portrait of Gertrud (Trude) Guttmann Portraits Children

Born September 8, 1905, worked in a Jewish orphanage in Berlin and was deported to Auschwitz May 17, 1943, where she died.

Portrait of Gertrud (Trude) Guttmann (on right) with unidentified woman Portraits Groups Women

Born September 8, 1905, worked in a Jewish orphanage in Berlin and was deported to Auschwitz May 17, 1943, where she died.

Studio portrait of the wood merchant Hermann Judey Portraits Men

Riga 1878? – New York 1959

Studio portrait of the wood merchant Hermann Judey with his stepson Paul Portraits Family

Paul was the son from a previous marriage of Hermann's first wife Olga Judey nee Fischmann