scholarly journals Probing Two-Dimensional vs Three-Dimensional Molecular Aggregation in Metal-Free Tetraphenylporphyrin Thin Films by Optical Anisotropy

2014 ◽  
Vol 118 (29) ◽  
pp. 15649-15655 ◽  
Author(s):  
G. Bussetti ◽  
M. Campione ◽  
L. Ferraro ◽  
L. Raimondo ◽  
B. Bonanni ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Anisotropy ◽  
Three Dimensional ◽  
Molecular Aggregation ◽  
Two Dimensional ◽  
Metal Free

scholarly journals Nanometer-Thick [(FPEA)2PbX4; X=I, Br] 2D Halide Perovskite Based Thin Films for Pollutant Detection and Nonconventional Photocatalytic Degradation

2021 ◽  
Author(s):  
Arindam Mondal ◽  
Akash Lata ◽  
Aarya Prabhakaran ◽  
Satyajit Gupta
Keyword(s):  
Thin Films ◽  
Photocatalytic Degradation ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Reduced Dimensionality ◽  
P Application ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Pollutant Detection

Application of three-dimensional (3D)-halide perovskites (HaP) in photocatalysis encourages the new exercise with two-dimensional (2D) HaP based thin-films for photocatalytic degradation of dye. The reduced dimensionality to 2D-HaPs, with a...

Microstructure Evolution of Epitaxial (Ba, Sr) TiO3/ (001) HgO Thin Films

1994 ◽  
Vol 361 ◽  
Author(s):  
V.A. Alyoshin ◽  
E.V. Sviridov ◽  
V.I.M. Hukhortov ◽  
I.H. Zakharchenko ◽  
V.P. Dudkevich
Keyword(s):  
Thin Films ◽  
Cross Section ◽  
Microstructure Evolution ◽  
Three Dimensional ◽  
Gas Pressure ◽  
Smooth Surfaces ◽  
Two Dimensional ◽  
Surface Versus ◽  
Deposition Conditions

ABSTRACTSurface and cross-section relief evolution of ferroelectric epitaxial (Ba,Sr)TiO3 films rf-sputtered on (001) HgO crystal cle-avage surface versus the oxygen worKing gas pressure P and subst-rate temperature T were studied. Specific features of both three-dimensional and two-dimensional epitaxy mechanisms corresponding to various deposition conditions were revealed. Difference between low and high P-T-value 3D epitaxy was established. The deposition of films with mirror-smooth surfaces and perfect interfaces is shown to be possible.

scholarly journals Tip-Based Nanomachining on Thin Films: A Mini Review

2021 ◽  
Author(s):  
Shunyu Chang ◽  
Yanquan Geng ◽  
Yongda Yan
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Data Storage ◽  
Three Dimensional ◽  
Maintenance Cost ◽  
Two Dimensional ◽  
Force Microscopy ◽  
Atomic Force ◽  
Current State ◽  
Two Dimensional Materials

AbstractAs one of the most widely used nanofabrication methods, the atomic force microscopy (AFM) tip-based nanomachining technique offers important advantages, including nanoscale manipulation accuracy, low maintenance cost, and flexible experimental operation. This technique has been applied to one-, two-, and even three-dimensional nanomachining patterns on thin films made of polymers, metals, and two-dimensional materials. These structures are widely used in the fields of nanooptics, nanoelectronics, data storage, super lubrication, and so forth. Moreover, they are believed to have a wide application in other fields, and their possible industrialization may be realized in the future. In this work, the current state of the research into the use of the AFM tip-based nanomachining method in thin-film machining is presented. First, the state of the structures machined on thin films is reviewed according to the type of thin-film materials (i.e., polymers, metals, and two-dimensional materials). Second, the related applications of tip-based nanomachining to film machining are presented. Finally, the current situation of this area and its potential development direction are discussed. This review is expected to enrich the understanding of the research status of the use of the tip-based nanomachining method in thin-film machining and ultimately broaden its application.

Chemistry-mediated two-dimensional to three-dimensional transition of In thin films

2004 ◽  
Vol 84 (26) ◽  
pp. 5401-5403 ◽  
Author(s):  
H. L. Wei ◽  
Hanchen Huang ◽  
C. H. Woo ◽  
X. X. Zhang ◽  
L. G. Zhou
Keyword(s):  
Thin Films ◽  
Three Dimensional ◽  
Two Dimensional

Two-dimensional versus three-dimensional post-deposition grain growth in epitaxial oxide thin films

2007 ◽  
Vol 515 (18) ◽  
pp. 7080-7085 ◽  
Author(s):  
R. Bachelet ◽  
A. Boulle ◽  
B. Soulestin ◽  
F. Rossignol ◽  
R. Guinebretière ◽  
...  
Keyword(s):  
Thin Films ◽  
Grain Growth ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Oxide Thin Films ◽  
Epitaxial Oxide ◽  
Post Deposition

The Morphological Stability of Strained Epitaxial Layers

1996 ◽  
Vol 440 ◽  
Author(s):  
B. W. Wessels
Keyword(s):  
Thin Films ◽  
Critical Thickness ◽  
Strain Relaxation ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Nucleation Theory ◽  
Classical Nucleation Theory ◽  
Epitaxial Layers ◽  
Two Dimensional ◽  
Morphological Stability

AbstractThe morphological stability of strained-layer thin films is analyzed using classical nucleation theory. For the case where strain relaxation occurs by formation of coherent islands, the model predicts that the critical thickness for transition from two-dimensional (2D) to three dimensional (3D) growth depends inversely on the square of the misfit. The predicted dependence of critical thickness on misfit is in agreement with recent experimental studies on the heteropitaxy of III-V compounds.

Electrohydrodynamics of Thin Flowing Films

2005 ◽  
Vol 128 (2) ◽  
pp. 276-283 ◽  
Author(s):  
Evan M. Griffing ◽  
S. George Bankoff ◽  
Michael J. Miksis ◽  
Robert A. Schluter
Keyword(s):  
Thin Films ◽  
Electric Fields ◽  
Vertical Plate ◽  
Three Dimensional ◽  
Threshold Pressure ◽  
Two Dimensional ◽  
Stability Threshold ◽  
Electrode Potentials ◽  
Pressure Profiles ◽  
The Stability

Thin films of oil flowing down a nearly-vertical plate were subjected to a strong normal electrostatic field. Steady-state height profiles were measured by fluorescence imaging. For electrode potentials less than that required to produce an instability, the two-dimensional response of the interface was <1%. Calculations of the fluid height coupled with the electric field solution were identical to uncoupled calculations for electric fields below the stability threshold. Pressure profiles under the film and three-dimensional effects are also discussed.

Surface and Interface Microstructure of Epitaxial Ferroelectric (Ba, Sr)Tio3 Thin Films

1995 ◽  
Vol 388 ◽  
Author(s):  
V. A. Alyoshin ◽  
E. V. Sviridov ◽  
Vi. M. Mukhortov ◽  
I. N. Zakharchenko ◽  
V. P. Dudkevich
Keyword(s):  
Thin Films ◽  
Substrate Temperature ◽  
Cross Section ◽  
Three Dimensional ◽  
Gas Pressure ◽  
Smooth Surfaces ◽  
Interface Microstructure ◽  
Two Dimensional ◽  
Surface And Interface ◽  
Deposition Conditions

AbstractSurface and cross-section relief evolution of ferroelectric epitaxial (Ba,Sr)Ti03 films rf-sputtered on (001) MgO crystal cleavage surfaces versus the oxygen worKing gas pressure P and substrate temperature T were studied. Specific features of both three-dimensional and two-dimensional epitaxy mechanisms corresponding to various deposition conditions were revealed. Difference between low and high P-T-value 3D epitaxy was established. the deposition of films with mirror-smooth surfaces and perfect interfaces is shown to be possible.

scholarly journals Синтез тонких пленок ниобия на кремнии и исследование их сверхпроводящих свойств в области размерного кроссовера

2021 ◽  
Vol 91 (2) ◽  
pp. 275
Author(s):  
И.В. Янилкин ◽  
А.И. Гумаров ◽  
А.М. Рогов ◽  
Р.В. Юсупов ◽  
Л.Р. Тагиров
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Electrical Resistance ◽  
Three Dimensional ◽  
Specific Effect ◽  
Two Dimensional ◽  
Superconducting Transition ◽  
Conduction Electrons ◽  
The Magnetic Field ◽  
Coherence Lengths

Niobium films of 4–100 nm thickness were synthesized on a silicon substrate under ultrahigh vacuum conditions. Measurements of electrical resistance showed a high temperature of the superconducting transition Tc, in the range of 4.7–9.1 K, and extremely small transition widths ΔTc in the range of 260–11 mK. The dependences of Tc and ΔTc on the magnetic field were studied, and superconducting coherence lengths and mean free paths of the conduction electrons were determined for different thicknesses of the synthesized films. A specific effect of the magnetic field on ΔTc was found, which reveals a transition from three-dimensional to two-dimensional superconductivity at thicknesses below 10 nm. The dependences of Tc and ΔTc on the films thickness and the magnitude of the magnetic field are discussed in the framework of existing concepts of superconductivity in thin films of superconducting metals.

Amplified spontaneous emission in thin films of quasi-2D BA3MA3Pb5Br16 lead halide perovskites

Nanoscale ◽  
2021 ◽  
Author(s):  
Maria Luisa De Giorgi ◽  
A. Creti ◽  
Maria-Grazia La-Placa ◽  
Pablo P. Boix ◽  
Henk J. Bolink ◽  
...  
Keyword(s):  
Thin Films ◽  
Spontaneous Emission ◽  
Three Dimensional ◽  
Amplified Spontaneous Emission ◽  
Two Dimensional ◽  
New Class ◽  
Improved Stability ◽  
Halide Perovskites ◽  
Lead Halide

Quasi-2D (two-dimensional) hybrid perovskites are emerging as a new class of materials with high photoluminescence yield and improved stability compared to their three-dimensional (3D) counterparts. Nevertheless, despite their outstanding emission...

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