Large-Area Domain Alignment in Block Copolymer Thin Films Using Electric Fields

1998 ◽  
Vol 31 (13) ◽  
pp. 4399-4401 ◽  
Author(s):  
P. Mansky ◽  
J. DeRouchey ◽  
T. P. Russell ◽  
J. Mays ◽  
M. Pitsikalis ◽  
...  
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Electric Fields ◽  
Large Area ◽  
Domain Alignment

Large Scale Domain Alignment of a Block Copolymer from Solution Using Electric Fields

2002 ◽  
Vol 35 (4) ◽  
pp. 1319-1325 ◽  
Author(s):  
Alexander Böker ◽  
Armin Knoll ◽  
Hubert Elbs ◽  
Volker Abetz ◽  
Axel H. E. Müller ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Electric Fields ◽  
Large Scale ◽  
Domain Alignment

“Square” hysteresis loops in phase-switching Nb-doped lead zirconate stannate titanate thin films

1995 ◽  
Vol 10 (11) ◽  
pp. 2764-2769 ◽  
Author(s):  
C.J. Gaskey ◽  
K.R. Udayakumar ◽  
H.D. Chen ◽  
I.E. Cross
Keyword(s):  
Thin Films ◽  
Electric Fields ◽  
Sol Gel ◽  
Hysteresis Loops ◽  
Lead Zirconate ◽  
Slight Variation ◽  
Multichip Modules ◽  
Large Area ◽  
Capacitance Density ◽  
Phase Switching

Niobium-doped lead zirconate stannate titanate thin films have been prepared by a modified sol-gel spin on technique, utilizing the hydrolysis-resistant precursor lead acetylacetonate. Films of compositions in the antiferroelectric tetragonal and antiferroelectric orthorhombic phases were prepared and phase-switched with the application of appropriate electric fields. A distinctly “square” hysteresis response was observed in a low titanium, low tin, orthorhombic composition, with a maximum polarization, Pmax, of 40 μC/cm2 and switching field values of Ef = 175 kV/cm and Ea = 75 kV/cm, while varying degrees of squareness, along with lower polarizations and switching fields, were observed in the higher tin, tetragonal compositions. Electric field-induced strains of up to 0.33% have been measured in the orthorhombic composition, with tunable electromechanical coefficients. Film properties showed only slight variation with electrode size over a range of diameters from 0.8 mm to 6.35 mm; large area electrodes are vital for practical actuator and sensor devices. With a capacitance density of 30–35 μF/cm2, films of the orthorhombic composition are promising as power plane decoupling capacitors in multichip modules.

Large Area Orientation of Block Copolymer Microdomains in Thin Films via Directional Crystallization of a Solvent

2001 ◽  
Vol 34 (8) ◽  
pp. 2602-2606 ◽  
Author(s):  
Cheolmin Park ◽  
Claudio De Rosa ◽  
Edwin L. Thomas
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Directional Crystallization ◽  
Large Area

Electric field directed self-assembly of block copolymers for rapid formation of large-area complex nanopatterns

2017 ◽  
Vol 2 (5) ◽  
pp. 560-566 ◽  
Author(s):  
Hyun Uk Jeon ◽  
Hyeong Min Jin ◽  
Ju Young Kim ◽  
Seung Keun Cha ◽  
Jeong Ho Mun ◽  
...  
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Electric Field ◽  
Self Assembly ◽  
Large Area ◽  
Rapid Formation

We investigate the unusually rapid directed self-assembly of block copolymer (BCP) thin films by imposing an in-plane electric field.

Large area nanolithographic templates by selective etching of chemically stained block copolymer thin films

2004 ◽  
Vol 14 (18) ◽  
pp. 2729 ◽  
Author(s):  
Roberto Olayo-Valles ◽  
M. S. Lund ◽  
C. Leighton ◽  
Marc A. Hillmyer
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Selective Etching ◽  
Large Area

Control of Orientational Order in Block Copolymer Thin Films by Electric Fields: A Combinatorial Approach

2008 ◽  
Vol 41 (15) ◽  
pp. 5515-5518 ◽  
Author(s):  
Violetta Olszowka ◽  
Volker Kuntermann ◽  
Alexander Böker
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Electric Fields ◽  
Orientational Order ◽  
Combinatorial Approach

An Unconventional Method for Production of Nanostructured Carbon Layers from Block Copolymer Thin Films Under Electric Fields

2017 ◽  
Vol 9 (9) ◽  
pp. 1583-1588
Author(s):  
Seokwon Joo ◽  
Jeong Yong Park ◽  
Bomyung Kim ◽  
Chang-Soo Lee ◽  
Joonwon Bae
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Electric Fields ◽  
Nanostructured Carbon ◽  
Unconventional Method

scholarly journals Large-Area Nanosquare Arrays from Shear-Aligned Block Copolymer Thin Films

Nano Letters ◽  
2014 ◽  
Vol 14 (10) ◽  
pp. 5698-5705 ◽  
Author(s):  
So Youn Kim ◽  
Adam Nunns ◽  
Jessica Gwyther ◽  
Raleigh L. Davis ◽  
Ian Manners ◽  
...  
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Large Area

scholarly journals Synthesis of N-CNT/TiO2 composites thin films: surface analysis and optoelectronic properties

2020 ◽  
Vol 183 ◽  
pp. 05002 ◽  
Author(s):  
Hamza Belkhanchi ◽  
Younes Ziat ◽  
Maryama Hammi ◽  
Charaf Laghlimi ◽  
Abdelaziz Moutcine ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Analysis ◽  
Sol Gel ◽  
Careful Analysis ◽  
Optoelectronic Properties ◽  
Spectroscopic Techniques ◽  
Large Area ◽  
Visible Absorption ◽  
Temperature Solution ◽  
Good Agreement

In this study, we have investigated the surface analysis and optoelectronic properties on the synthesis of N-CNT/TiO2 composites thin films, using sol gel method for a dye synthetized solar cell (DSSC) which is found to be simple and economical route. The titanium dioxide based solar cells are an exciting photovoltaic candidate; they are promising for the realization of large area devices. That can be synthetized by room temperature solution processing, with high photoactive performance. In the present work, we stated comparable efficiencies by directing our investigation on obtaining Sol Gel thin films based on N-CNT/TiO2, by dispersing nitrogen (N) doped carbon nanotubes (N-CNTs) powders in titanium tetraisopropoxyde (TTIP). The samples were assessed in terms of optical properties, using UV—visible absorption spectroscopic techniques. After careful analysis of the results, we have concluded that the mentioned route is good and more efficient in terms of optoelectronic properties. The gap of “the neat” 0.00w% N-CNT/TiO2 is of 3eV, which is in a good agreement with similar gap of semiconductors. The incorporated “w%NCNTs” led to diminishing the Eg with increasing N-CNTs amount. These consequences are very encouraging for optoelectronic field.

scholarly journals Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inti Zumeta-Dubé ◽  
José Manuel García Rangel ◽  
Jorge Roque ◽  
Issis Claudette Romero-Ibarra ◽  
Mario Fidel García Sánchez
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Morphological Characteristics ◽  
Ultrasonic Spray Pyrolysis ◽  
Cost Effective ◽  
Growth Direction ◽  
Large Area ◽  
Smart Windows ◽  
Ultrasonic Spray

AbstractThe strong facet-dependent performance of glass-supported CeO2 thin films in different applications (catalysis, smart windows, etc.) has been the target of diverse fundamental and technological approaches. However, the design of accurate, cost-effective and scalable methods with the potential for large-area coverage that produce highly textured glass-supported CeO2 thin films remains a technological challenge. In the present work, it is demonstrated that under proper tuning conditions, the ultrasonic spray pyrolysis technique enables one to obtain glass-supported polycrystalline CeO2 films with noticeable texture along both the (100) and (111) directions, as well as with randomly oriented crystallites (no texture). The influence of flow rates, solution molarity, and substrate temperature on the texture and morphological characteristics, as well as optical absorption and Raman response of the deposited films, is evaluated. The obtained results are discussed on the basis of the combined dependence of the CeO2-exposed surfaces on the thermodynamic stability of the corresponding facets and the reaction kinetics, which modulate the crystallite growth direction.

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