Feedback-free single-beam pattern formation by nanosecond pulses in dye-doped liquid crystals

2006 ◽  
Author(s):  
Nick N. Lepeshkin ◽  
Svetlana G. Lukishova ◽  
Robert W. Boyd ◽  
Kenneth L. Marshall
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation ◽  
Beam Pattern ◽  
Single Beam ◽  
Nanosecond Pulses

Pattern formation and pattern selection in the Landau–Ginzburg model of critical phenomena

1990 ◽  
Vol 68 (9) ◽  
pp. 760-767 ◽  
Author(s):  
J. A. Tuszynski ◽  
M. Otwinowski
Keyword(s):  
Liquid Crystals ◽  
Partial Differential Equations ◽  
Pattern Formation ◽  
Critical Phenomena ◽  
Nonlinear Partial Differential Equations ◽  
Point Of View ◽  
Pattern Selection ◽  
Control Parameters ◽  
The Family ◽  
Kinetics Of

In this paper we investigate the family of nonlinear partial differential equations used to describe the kinetics of critical phenomena within the Landau–Ginzburg model. An analysis of the recently obtained symmetry-reduction results for a number of such equations is provided from the point of view of pattern formation at criticality. Various possibilities occur depending on the choice of control parameters. An illustration is provided using several physical examples such as metamagnets and liquid crystals.

Reconfigurable Large‐Scale Pattern Formation Driven by Topological Defect Separation in Liquid Crystals

2020 ◽  
Vol 7 (13) ◽  
pp. 2000139
Author(s):  
Satoshi Aya ◽  
Peter Salamon ◽  
Nandor Eber ◽  
Agnes Buka ◽  
Fumito Araoka
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation ◽  
Large Scale ◽  
Topological Defect

Pattern Formation in Liquid Crystals

1993 ◽  
pp. 157-205 ◽  
Author(s):  
Hiroshi ORIHARA ◽  
Tomoyuki NAGAYA ◽  
Yoshihiro ISHIBASHI
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation

UNDULATION PATTERNS IN PATTERN FORMATION OF CHOLESTERIC LIQUID CRYSTALS AS WAVELENGTH-CHANGING INSTABILITIES

2004 ◽  
Vol 413 (1) ◽  
pp. 489-497
Author(s):  
Tae-Young Yoon ◽  
Cherlhyun Jeong ◽  
Sung-Jin Kim ◽  
Chang-Jae Yu ◽  
Sin-Doo Lee
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation ◽  
Cholesteric Liquid Crystals

Beam pattern formation and on‐/off‐axis pressure in the near field through elastic structures

2000 ◽  
Vol 108 (5) ◽  
pp. 2637-2637
Author(s):  
Fernando García‐Osuna ◽  
Elmer L. Hixson ◽  
Augusto L. Podio
Keyword(s):  
Pattern Formation ◽  
Near Field ◽  
Beam Pattern ◽  
Elastic Structures

Pattern Formation during Mesophase Growth in Liquid Crystals

1988 ◽  
Vol 7 (1) ◽  
pp. 43-47 ◽  
Author(s):  
S Arora ◽  
A Buka ◽  
P Palffy-Muhoray ◽  
Z Racz ◽  
R Vora
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation

Multiple modes of laser-induced pattern formation in nanoscopic Co films

2006 ◽  
Vol 960 ◽  
Author(s):  
Christopher Favazza ◽  
Justin Trice ◽  
Radhakrishna Sureshkumar ◽  
Ramki Kalyanaraman
Keyword(s):  
Pattern Formation ◽  
Laser Intensity ◽  
Effective Means ◽  
Cost Effective ◽  
Range Order ◽  
Laser Interference ◽  
Pulse Laser Irradiation ◽  
Single Beam ◽  
Beam Laser ◽  
Selection Of

ABSTRACTDewetting instabilities in nanoscopic Co films, induced by uniform multiple ns pulse laser irradiation, leads to a system of nanoparticles with robust spatial order. On the other hand, irradiation by non-uniform laser intensity, such as with a two beam laser interference pattern generates a quasi two-dimensional pattern of nanoparticles possessing long range order (LRO) and short range order (SRO). Here we discuss the various instabilities that are responsible for the production of these dissimilar patterns and length scales on the basis of their time scales. For the case of single beam irradiation, the film progresses in a manner that can be attributed to classical spinodal dewetting. Pattern formation from interference irradiation is the result of time scale-based selection of competing processes, which can be chosen by controlling the film thickness. This approach promises a simple and cost-effective means to self-assemble various nanostructures.

Sign in / Sign up

Export Citation Format

Share Document