scholarly journals Nonlinear Susceptabilities of Conjugated Organic Systems: Fused-ring Oligomers

1991 ◽  
Vol 44 (3) ◽  
pp. 299
Author(s):  
GRJ Williams
Keyword(s):  
Finite Field ◽  
Optoelectronic Devices ◽  
Polymeric Materials ◽  
Current Investigation ◽  
Flexible Chain ◽  
Organic Systems ◽  
Electro Optic ◽  
Fused Ring ◽  
Ladder Polymers ◽  
Rigid Rod

The finite-field modified neglect of diatomic overlap (MNDO) molecular orbital technique has been used to calculate the second hyperpolarisability (the molel:ular counterpart to the macroscopic nonlinear susceptability tensor X3) for selected fused-ring oligomers. The fusedring segments are the active electro-optic units in ladder polymers and rigid-rod/flexible-chain copolymers that are under current investigation as polymeric materials with applications in ultrafast optoelectronic devices.

Spectroscopic and morphological studies of highly conducting ion-implanted rigid-rod and ladder polymers

1992 ◽  
Vol 25 (21) ◽  
pp. 5828-5835 ◽  
Author(s):  
John A. Osaheni ◽  
Samson A. Jenekhe ◽  
Andrew Burns ◽  
Gang Du ◽  
Jinsoo Joo ◽  
...  
Keyword(s):  
Morphological Studies ◽  
Ladder Polymers ◽  
Rigid Rod ◽  
Ion Implanted

scholarly journals Sandwich-structure transferable free-form OLEDs for wearable and disposable skin wound photomedicine

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Yongmin Jeon ◽  
Hye-Ryung Choi ◽  
Jeong Hyun Kwon ◽  
Seungyeop Choi ◽  
Kyung Mi Nam ◽  
...  
Keyword(s):  
Sandwich Structure ◽  
High Efficiency ◽  
Optoelectronic Devices ◽  
Polymeric Materials ◽  
Skin Wound ◽  
Equivalent Model ◽  
Free Form ◽  
Skin Area ◽  
Operating Life ◽  
Efficiency Performance

AbstractFree-form optoelectronic devices can provide hyper-connectivity over space and time. However, most conformable optoelectronic devices can only be fabricated on flat polymeric materials using low-temperature processes, limiting their application and forms. This paper presents free-form optoelectronic devices that are not dependent on the shape or material. For medical applications, the transferable OLED (10 μm) is formed in a sandwich structure with an ultra-thin transferable barrier (4.8 μm). The results showed that the fabricated sandwich-structure transferable OLED (STOLED) exhibit the same high-efficiency performance on cylindrical-shaped materials and on materials such as textile and paper. Because the neutral axis is freely adjustable using the sandwich structure, the textile-based OLED achieved both folding reliability and washing reliability, as well as a long operating life (>150 h). When keratinocytes were irradiated with red STOLED light, cell proliferation and cell migration increased by 26 and 32%, respectively. In the skin equivalent model, the epidermis thickness was increased by 39%; additionally, in organ culture, not only was the skin area increased by 14%, but also, re-epithelialization was highly induced. Based on the results, the STOLED is expected to be applicable in various wearable and disposable photomedical devices.

Characterization of Polyquinoline Blends Using Small Angle Scattering

1989 ◽  
Vol 171 ◽  
Author(s):  
Wen-Li Wu ◽  
John K. Stille ◽  
Joseph W. Tsang ◽  
Alex J. Parker
Keyword(s):  
Small Angle ◽  
Quantitative Information ◽  
Flexible Chain ◽  
X Ray ◽  
Molecular Dispersion ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Rigid Rod ◽  
Scattering Contribution

ABSTRACTTo determine the compatibility between the rigid rod and the flexible chain polyquinolines, both small angle x-ray and neutron scattering measurements were conducted on blends containing deuterated flexible chains. The scattering intensities from both x-ray and neutron were reduced to their absolute scales in order to remove the scattering contribution from microvoids which tended to overshadow the signal of molecular origin. Quantitative information regarding the molecular dispersion in a 50/50 rigid rod and flexible chain blend was obtained. The result indicated that this material was partially segregated but not to the point of single component phases.

An all-optical protocol to determine the molecular origin of radiation damage/enhancement in electro-optic polymeric materials

2012 ◽  
Author(s):  
Javier Pérez-Moreno ◽  
Stijn Van Cleuvenbergen ◽  
Maarten Vanbel ◽  
Koen Clays ◽  
Edward W. Taylor
Keyword(s):  
Radiation Damage ◽  
Polymeric Materials ◽  
Electro Optic ◽  
All Optical ◽  
Molecular Origin

Electro-optic properties of GaInAsSb/GaAs quantum well for high-speed integrated optoelectronic devices

2013 ◽  
Vol 102 (1) ◽  
pp. 013120 ◽  
Author(s):  
Jiri Thoma ◽  
Baolai Liang ◽  
Charles Reyner ◽  
Tomasz Ochalski ◽  
David Williams ◽  
...  
Keyword(s):  
Quantum Well ◽  
High Speed ◽  
Optoelectronic Devices ◽  
Electro Optic

Use of polymeric materials for external electro-optic probing

1992 ◽  
Vol 16 (1-4) ◽  
pp. 325-332 ◽  
Author(s):  
F. Taenzler ◽  
E. Kubalek
Keyword(s):  
Polymeric Materials ◽  
Electro Optic

Active Photonic Crystal Devices in Self-Assembled Electro-Optic Polymeric Materials

2004 ◽  
Vol 817 ◽  
Author(s):  
J. Li ◽  
P. J. Neyman ◽  
M. Vercellino ◽  
J. R. Heflin ◽  
R. Duncan ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Polymeric Materials ◽  
Optical Characterization ◽  
Photonic Devices ◽  
Self Assembled Monolayers ◽  
Electro Optic ◽  
Assembled Monolayers ◽  
Novel Approaches ◽  
Self Assembled

AbstractPhotonic crystals (PC) offer novel approaches for integrated photonics by allowing the manipulation of light based on the photonic bandgap effect rather than internal-reflection mechanisms employed in traditional devices. Electro-optic polymers represent interesting possibilities for the development of devices leveraging control over the phase of a confined propagating wave. We here report on the development of such active photonic crystal technology in ionically self-assembled monolayers. The simulation of active photonic devices such as Mach-Zehnder interferometers and wavelength multiplexers is first presented. We then report on the synthesis and optical characterization of electro-optic films grown through the ISAM technique. We conclude by presenting the preliminary development of a nanofabrication platform that would enable the realization of active photonic devices in such materials.

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