Controllable surface morphology transition from inter-connected pores to flower-like structures for super-hydrophobic poly (L-lactic acid) films

2021 ◽  
Vol 412 ◽  
pp. 127032 ◽  
Author(s):  
Xin Sun ◽  
Shengdu Yang ◽  
Bai Xue ◽  
Jiali Li ◽  
Yanwen Wang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Surface Morphology ◽  
Morphology Transition

Temperature Dependent Morphology Transition of GaN Films

1999 ◽  
Vol 572 ◽  
Author(s):  
A. R. A. Zauner ◽  
F. K. De Theue ◽  
P. R. Hageman ◽  
W. J. P. Van ◽  
J. J. Schermer ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Temperature Dependence ◽  
Growth Rates ◽  
Temperature Dependent ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Morphology Transition ◽  
Temperature Range ◽  
Sapphire Substrates ◽  
Low Pressure Mocvd

ABSTRACTThe temperature dependence of the surface morphology of GaN epilayers was studied with AFM. The layers were grown by low pressure MOCVD on (0001) sapphire substrates in the temperature range of 980°C-1085°C. In this range the (0001) and {1101} faces completely determine the morphology of 1.5 μm thick Ga-faced GaN films. For specimens grown at 20 mbar and temperatures below 1035°C the {1101} faces dominate the surface, which results in matt-white layers. At higher growth temperatures the morphology is completely determined by (0001) faces, which lead to smooth and transparent samples. For growth at 50 mbar, this transition takes place between 1000°C and 1015°C. It is shown that the morphology of the films can be described using a parameter αGaN, which is proportional to the relative growth rates of the (0001) and the {1101} faces.

Thermally Reversible Surface Morphology Transition in Thin Diblock Copolymer Films

ACS Nano ◽  
2010 ◽  
Vol 4 (7) ◽  
pp. 3653-3660 ◽  
Author(s):  
Xiaohua Zhang ◽  
Kevin G. Yager ◽  
Nathaniel J. Fredin ◽  
Hyun Wook Ro ◽  
Ronald L. Jones ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Diblock Copolymer ◽  
Morphology Transition ◽  
Copolymer Films

Manipulating poly(lactic acid) surface morphology by solvent-induced crystallization

2012 ◽  
Vol 261 ◽  
pp. 528-535 ◽  
Author(s):  
Jian Gao ◽  
Lingyan Duan ◽  
Guanghui Yang ◽  
Qin Zhang ◽  
Mingbo Yang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Surface Morphology ◽  
Poly Lactic Acid ◽  
Induced Crystallization

Surface Morphology Variations of Porous Nano-Calcium Phosphate/Poly(L-Lactic Acid) Composites in PBS

2006 ◽  
pp. 569-572
Author(s):  
Yan Bo Gao ◽  
Wen Jian Weng ◽  
Xu Liang Deng ◽  
Kui Cheng ◽  
Xing Gang Liu ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Calcium Phosphate ◽  
Surface Morphology

Surface Morphology Variations of Porous Nano-Calcium Phosphate/Poly(L-Lactic Acid) Composites in PBS

2006 ◽  
Vol 309-311 ◽  
pp. 569-572 ◽  
Author(s):  
Yan Bo Gao ◽  
Wen Jian Weng ◽  
Xu Liang Deng ◽  
Kui Cheng ◽  
Xing Gang Liu ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Calcium Phosphate ◽  
Surface Morphology

An Established Epithelial Cell Line (NPC/HK1) from a Nasopharyngeal Carcinoma - II. A Sem Study

1982 ◽  
Vol 40 ◽  
pp. 224-225
Author(s):  
Li C.L. ◽  
Chew E.C. ◽  
Huang D.P. ◽  
Ho H.C. ◽  
Mak L.S. ◽  
...  
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Epithelial Cell ◽  
Surface Morphology ◽  
Cell Line ◽  
Epithelial Cell Line ◽  
Present Communication ◽  
Cells In Culture ◽  
Sem Study ◽  
Well Differentiated

An epithelial cell line, NPC/HK1, has recently been successfully established from a nasopharyngeal carcinoma of the moderately to well differentiated squamous type. The present communication reports on the surface morphology of the NPC/HK1 cells in culture.

Demonstration of Retinal Glycogen with Silver Methenamine

1971 ◽  
Vol 29 ◽  
pp. 564-565
Author(s):  
A. W. Sedar ◽  
G. H. Bresnick
Keyword(s):  
Lactic Acid ◽  
Chromic Acid ◽  
Periodic Acid ◽  
Müller Cell ◽  
External Limiting Membrane ◽  
Electron Microscope Level ◽  
Reactive Process ◽  
Inner Limiting Membrane ◽  
Muller Cell ◽  
And Migration

After experimetnal damage to the retina with a variety of procedures Müller cell hypertrophy and migration occurs. According to Kuwabara and others the reactive process in these injuries is evidenced by a marked increase in amount of glycogen in the Müller cells. These cells were considered originally supporting elements with fiber processes extending throughout the retina from inner limiting membrane to external limiting membrane, but are known now to have high lactic acid dehydrogenase activity and the ability to synthesize glycogen. Since the periodic acid-chromic acid-silver methenamine technique was shown to demonstrate glycogen at the electron microscope level, it was selected to react with glycogen in the fine processes of the Müller cell that ramify among the neural elements in various layers of the retina and demarcate these cells cytologically. The Rhesus monkey was chosen as an example of a well vascularized retina and the rabbit as an example of a avascular retina to explore the possibilities of the technique.

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