scholarly journals Variation of Surface Nanostructures on (100) PbS Single Crystals during Argon Plasma Treatment

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 111
Author(s):  
Sergey P. Zimin ◽  
Nikolai N. Kolesnikov ◽  
Ildar I. Amirov ◽  
Viktor V. Naumov ◽  
Egor S. Gorlachev ◽  
...  

The nanostructuring of the (100) PbS single crystal surface was studied under varying argon plasma treatment conditions. The initial PbS single crystals were grown by high-pressure vertical zone melting, cut into wafer samples, and polished. Subsequently, the PbS single crystals were treated with inductively coupled argon plasma under varying treatment parameters such as ion energy and sputtering time. Plasma treatment with ions at a minimum energy of 25 eV resulted in the formation of nanotips with heights of 30–50 nm. When the ion energy was increased to 75–200 eV, two types of structures formed on the surface: high submicron cones and arrays of nanostructures with various shapes. In particular, the 120 s plasma treatment formed specific cruciform nanostructures with lateral orthogonal elements oriented in four <100> directions. In contrast, plasma treatment with an ion energy of 75 eV for 180 s led to the formation of submicron quasi-spherical lead structures with diameters of 250–600 nm. The nanostructuring mechanisms included a surface micromasking mechanism with lead formation and the vapor–liquid–solid mechanism, with liquid lead droplets acting as self-forming micromasks and growth catalysts depending on the plasma treatment conditions (sputtering time and rate).

2019 ◽  
Vol 18 (03n04) ◽  
pp. 1940064
Author(s):  
S. P. Zimin ◽  
L. A. Mazaletskiy ◽  
I. I. Amirov ◽  
E. S. Gorlachev ◽  
V. F. Gremenok ◽  
...  

We report on surface nanostructuring of Cu(In,Ga)Se2 (CIGS) films using inductively coupled argon plasma treatment with the ion energy of 25–30[Formula: see text]eV within 30–120[Formula: see text]s. The films were fabricated on glass substrates using the selenization method and had a polycrystalline structure. We demonstrate that the plasma treatment results in the formation of tip-shaped nanostructure arrays with the geometrical parameters controlled by the treatment duration. The features of the surface nanostructuring using low energy ions are discussed.


2016 ◽  
Vol 17 (3) ◽  
pp. 336-341 ◽  
Author(s):  
D.M. Zayachuk ◽  
A. Csik ◽  
V.E. Slynko

We have investigated morphology of the lateral surfaces of PbTe crystal samples grown from melt by the Bridgman method sputtered by Ar+ plasma with ion energy of 50 – 550 eV for 5 - 50 minutes under Secondary Neutral Mass Spectrometry (SNMS) conditions. The sputtered PbTe crystal surface was found to be simultaneously both the source of sputtered material and the efficient substrate for re-deposition of the sputtered material during the depth profiling. During sputtering PbTe crystal surface is forming the dimple relief. To be re-deposited the sputtered Pb and Te form arrays of the microscopic surface structures in the shapes of hillocks, pyramids, cones and others on the PbTe crystal sputtered surface. Correlation between the density of re-deposited microscopic surface structures, their shape, and average size, on the one hand, and the energy and duration of sputtering, on the other, is revealed.


2010 ◽  
Vol 24 (15n16) ◽  
pp. 2682-2687 ◽  
Author(s):  
JONG-HYOUNG KIM ◽  
NORITSUGU UMEHARA ◽  
HIROYUKI KOUSAKA ◽  
MAMORU SHIMADA ◽  
MITSURU HASEGAWA

This paper has reported the effect of oxygen and argon plasma treatments of CIIR rubber using Attenuated Total Reflectance (ATR) and surface energy measurements. Plasma treatment led to changes in the surface energy from 31 to 45.7 mN/m. Plasma treatment conditions influenced both the changes in surface energy and stability, and they also became more difficult to obtain good contact angle measurements. However, plasma treatments made the interfacial properties to be stabilized. ATR measurements revealed that changes in surface energy with treatment time are due mostly to increased oxygen functionality.


2019 ◽  
Vol 139 (7) ◽  
pp. 217-218
Author(s):  
Michitaka Yamamoto ◽  
Takashi Matsumae ◽  
Yuichi Kurashima ◽  
Hideki Takagi ◽  
Tadatomo Suga ◽  
...  

2002 ◽  
Vol 202 (3-4) ◽  
pp. 183-198 ◽  
Author(s):  
C.C Surdu-Bob ◽  
J.L Sullivan ◽  
S.O Saied ◽  
R Layberry ◽  
M Aflori

2021 ◽  
pp. 095400832098729
Author(s):  
K Sudheendra ◽  
Jennifer Vinodhini ◽  
M Govindaraju ◽  
Shantanu Bhowmik

The study involves the processing of a novel poly [1, 4-phenylene-cis-benzobisoxazole] (PBO) fibre reinforced high-temperature thermoplastic composite with polyaryletherketone (PAEK) as the matrix. The PBO fibre and the PAEK film surface was modified using the method of argon and nitrogen plasma treatment. The investigation primarily focuses on evaluating the tensile properties of the fabricated laminates and correlating it with the effect of plasma treatment, surface characteristics, and its fracture surface. A 5% decrease in tensile strength was observed post argon plasma treatment while a 27% increase in strength was observed post nitrogen plasma treatment. The morphology of the failure surface was investigated by scanning electron microscopy and an interfacial failure was observed. Furthermore, the effect of plasma on the wettability of PBO fibres and PAEK film surface was confirmed by the Dynamic Contact Angle analysis and sessile drop method respectively. FTIR spectral analysis was done to investigate the effect of plasma treatment on the chemical structure on the surface. The results of the wettability study showed that the argon plasma treatment of the fibre surface increased its hydrophobicity while nitrogen plasma treatment resulted in the reduction of contact angle.


Pramana ◽  
2013 ◽  
Vol 80 (1) ◽  
pp. 133-141 ◽  
Author(s):  
N L Singh ◽  
S M Pelagade ◽  
R S Rane ◽  
S Mukherjee ◽  
U P Deshpande ◽  
...  

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