This may be viewed as an evolutionary process of aggregation of simple building blocks into more complex building blocks. In recent discussions with B. Curtis Eaves, he has suggested the term sublimation to describe what happens to the components which comprise the aggregate. I suspect there may be a more formal statement of this principle of aggregation in the emerging theory of Complexity. Fo...

MARSBOX is a recently developed microphysical model for Martian ice clouds based on the state-ofthe-art model for terrestrial Polar Stratospheric Clouds PSCbox [2, 3]. Two types of particles are considered: dust particles and dust coated with ice (ice particles), with, for both, a size-resolved distribution discretized in geometrically increasing size bins. We here run the model with 30 bins. T...

Recent research efforts in growth of 3C-SiC are reviewed. Sublimation growth is addressed with an emphasis on the enhanced understanding of polytype stability in relation to growth conditions, such as supersaturation and Si/C ratio. It is shown that at low temperature/supersaturation spiral 6H-SiC growth is favored, which prepares the surface for 3C-SiC nucleation. Provided the supersaturation ...

Bismuth thin films deposited onto glass substrates by thermal sublimation are polycrystalline with short mean free paths, multiple grain orientations, and disappointingly small magnetoresistance when compared to single crystals. Direct deposition onto thin gold buffer layers followed by a post-deposition anneal leads to significantly improved properties, namely, large grains oriented in the tri...

A n a c c o u n t is g iven of e x p e r i m e n t s on t h e r a t e of s u b l i m a t i o n of ice in v a c u u m a n d in t he p r e sence of a sma l l a m o u n t of air. T h e r e su l t s s h o w t h a t t h e g a s k ine t i c a c c o m o d a t i o n coef f ic ien t of t h e ice b e t w e e n 4 0 a n d 6 0 ° C lies n e a r u n i t y . Also i t a p p e a r s t h a t t h e m a x i m u m s...

Ice cores through an ice sheet can be regarded as a sample of a unique natural deformation experiment lasting up to a million years. Compared to other geological materials forming the earth‘s crust, the microstructure is directly accessible over the full depth. Controlled sublimation etching of polished ice sections reveals pores, air bubbles, grain boundaries and subgrain boundaries at the sur...