Atomic force microscopy studies on surface morphologies of CdHg(SCN)4 crystals grown in solutions containing excessive amount of Cd(II) cations

2003 ◽  
Vol 38 (2) ◽  
pp. 143-149 ◽  
Author(s):  
X. N. Jiang ◽  
D. Xu ◽  
D. L. Sun ◽  
D. R. Yuan ◽  
Q. Y. Zhang
2021 ◽  
Vol 18 (4) ◽  
pp. 21-28
Author(s):  
Simona Maria Ţîrcă ◽  
Ion Ţîrcă ◽  
Marius Sorin Ciontea ◽  
Florin Dumitru Mihălţan

Abstract Atopic dermatitis (AD)-the commonest inflammatory skin disease affects up to 25% of children and 2% to 5% of adults. Methods of the diagnostic provide expanded recommendations founded on available evidence. Morphological evaluation remains a principal feature of clinical investigation and the main criteria of diagnosis. Methods. We collected normal and affected skin from a 6-month child patient who was diagnosed through dermatologic examination. Clinical characteristics and the diagnosis of atopic dermatitis were in accordance with Hanifin and Rajka criteria. Morphology and structural integrity were investigated by Atomic Force Microscopy. Results. Optical and topography images indicate that in the case of AD skin lesions the cuticle structure was severely damaged and distorted with the flattening and grading of the plates, which have an irregular appearance. From the surface morphologies of the samples, we demonstrate that the shape of the corneocytes, with granular and elongated appearance, specific to normal skin is transformed by AD into broken and collapsed plates with discontinuous appearance. Conclusions. In the initial diagnosis of AD changes of the skin properties can be an indicator. Hanifin and Rajka criteria together with Atomic Force Microscopy can be a useful and necessary technique diagnosing cases of atopic dermatitis.


1994 ◽  
Vol 33 (Part 1, No. 7A) ◽  
pp. 4075-4079 ◽  
Author(s):  
Young Soo Yoon ◽  
Young-Ku Yoon ◽  
Jeong Yong Lee ◽  
Sang Seop Yom

2005 ◽  
Vol 277 (1-4) ◽  
pp. 555-559 ◽  
Author(s):  
Y.L. Geng ◽  
D. Xu ◽  
Y.L. Wang ◽  
W. Du ◽  
H.Y. Liu ◽  
...  

2000 ◽  
Vol 72 (3) ◽  
pp. 433-433
Author(s):  
GILBERTO WEISSMÜLLER ◽  
JOSÉ GARCIA-ABREU ◽  
PAULO MASCARELLO BISCH ◽  
VIVALDO MOURA NETO ◽  
LENY A. CAVALCANTE

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Caixia Ma ◽  
Zongyi Qin ◽  
Ding Pan

AbstractThe as-formed structure of gel-spun polyacrylonitrile (PAN) fiber from the solvent mixture system has been probed exploiting AFM techniques developed in the membrane industry. The surface structure of PAN membranes, prepared by phase transition under different casting conditions, was investigated by tapping mode atomic force microscopy. The results obtained show that the size and the density of these aggregates are dependent on the casting solution, namely on the type and concentration of the non-solvent. In the present work, tapping mode atomic force microscopy is used to comply with the main objective of differentiating surface morphologies of membranes.


Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 520
Author(s):  
Rui Huang ◽  
Tian Lan ◽  
Chong Li ◽  
Jing Li ◽  
Zhiyong Wang

The thermally activated blistering and exfoliation of GaAs wafers and SiO2/Si3N4/GaAs wafers after H+ and He+ implantation is systematically investigated. Surface morphologies and microscopic defects are detected and analyzed by various measurements, such as optical microscopy (OM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). Blistering and exfoliation are obtained on the surfaces of the GaAs and SiO2/Si3N4/GaAs wafers by either the exclusive implantation of 5 × 1016 He+/cm2 alone or by co-implantation of 0.5 × 1016 He+/cm2 and 4 × 1016 H+/cm2. Our experimental results show that the blistering and exfoliation of the SiO2/Si3N4/GaAs layer occurred when the concentration of He+ was relatively low, where fewer dislocations and nanocavities were created near the interface between the Si3N4 and GaAs layers.


RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16455-16466
Author(s):  
Sana Rahim ◽  
Adnan Murad Bhayo ◽  
Ghayas Uddin Siddiqui ◽  
Aneela Maalik ◽  
Najma Memon ◽  
...  

In this study, the surface morphologies of poly(2-vinyl pyridine-block-methyl methacrylate), P(2VP-MMA), copolymer films were analyzed by atomic force microscopy.


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