Oberflächenskulpturen bei höheren Pflanzen

Barthlott, Wilhelm; Schill, Rainer

doi:10.1007/978-3-642-45607-7_2

Cited by 2 publications

(2 citation statements)

References 147 publications

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“…Following dehydration, specimens were dried following the critical-point method using CO 2 as the intermediate medium. Specimens were mounted directly with a suspension of colloidal silver in acetone or on cover-slips using Schminke resin as a glue (Barthlott & Schill, 1981). Tissues were coated with gold or gold/palladium mixture using a Polaron Coater E 5000 or E 5100.…”

Section: Materials and M E T H O D Smentioning

confidence: 99%

The Ultrastructure of the Heart-Body and Extravasal Tissue in the Polychaete Annelids Neoamphitrite Figulus and Arenicola Marina

Braunbeck

Dales

1985

J. Mar. Biol. Ass.

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The heart-body in Neoamphitrite figulus (Dalyell) forms a mass of tissue within the supra-oesophageal vessel almost occluding the lumen. The tissue forms a much-infolded cylinder enclosed by a basal lamina consisting of a fibrous reticulum through which the assembled haemoglobin molecules are discharged into the plasma (Dales & Pell, 1970). A function of both the heart-body and the extravasal (‘chloragogen’) tissue in polychaetes without a heart-body was established by biochemical analysis (Kennedy & Dales, 1958; Dales, 1963, 1965) to be the synthesis of plasma haemoglobin (erythrocruorin) or chlorocruorin. This was confirmed by electron microscopy (TEM) by Breton-Gorius (1963) in Arenicola, Potswald (1969) in Spirorbis, Dales & Pell (1970) in Neoamphitrite, Lattice, Myxicola, Megalomma and Sabella, and by Friedmann & Weiss (1980) in Amphitrite. It would appear that the same tissues also sequester phagocytosed materials (Braunbeck & Dales, 1984). Re-examination of this tissue by trans-mission electron microscopy (TEM) has extended our knowledge of the ultra-structure. Here we discuss these results in relation to the function of these tissues in the production of the respiratory pigments found in the plasma. Some heart-bodies of Terebella lapidaria L., Lattice conchilega (Pallas) and Cirriformia tentaculata (Montagu) have also been examined by TEM for comparison with that of Neoamphitrite figulus.

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Section: Materials and M E T H O D Smentioning

confidence: 99%

The Ultrastructure of the Heart-Body and Extravasal Tissue in the Polychaete Annelids Neoamphitrite Figulus and Arenicola Marina

Braunbeck

Dales

1985

J. Mar. Biol. Ass.

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“…The number of folds within a line of 20 mm varies from 2 to 35. [11] Figure 1 shows a typical example of cuticular folds of a petal (flower leaf) of Daisies (Bellis perennis). In Daisies petals the cuticular folds have an average height of 360 nm with standard deviation (s) of 40, width of 410 nm (s ¼ 70) and a distance of 530 nm (s ¼ 150).…”

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Fabrication of Artificial Petal Sculptures by Replication of Sub‐micron Surface Wrinkles

Schweikart

Zimin

Handge

et al. 2010

Macro Chemistry & Physics

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In this contribution, we discuss wrinkling as a process resulting in well‐defined periodic micron‐sized structures, as known from the interface of several plant cells. We show possible pathways to transfer this principle to artificial materials such as epoxy resins or polymers. While topographical structuring of surfaces by wrinkling is meanwhile well established for elastomers like poly (dimethyl siloxane), so far the step towards other classes of materials has not been taken. This puts several limitations to potential applications of artificial wrinkled structures, as elastomers show poor dimensional stability, low optical quality, and tend to swell in organic solvents. As well, artificial structures formed by wrinkling are not tension‐free on the microscopic level, which makes them metastable. Residual mechanical tensions can affect dimensional stability on long timescales. We introduce two processes, micro thermoforming and molding, as means to overcome these restrictions and to pattern non‐elastomeric materials by using wrinkled elastomers as templates. The two approaches allow the formation of negative and positive replicas and allow the transfer of sub‐micron features with high fidelity.magnified image

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Oberflächenskulpturen bei höheren Pflanzen

Cited by 2 publications

References 147 publications

The Ultrastructure of the Heart-Body and Extravasal Tissue in the Polychaete Annelids Neoamphitrite Figulus and Arenicola Marina

The Ultrastructure of the Heart-Body and Extravasal Tissue in the Polychaete Annelids Neoamphitrite Figulus and Arenicola Marina

Fabrication of Artificial Petal Sculptures by Replication of Sub‐micron Surface Wrinkles

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