The One-Dimensional Band Structure of (Tetrazaporphyrinato)iron(II)

1987 ◽  
Vol 91 (7) ◽  
pp. 717-724 ◽  
Author(s):  
Michael C. Böhm ◽  
Rafael Ramírez ◽  
Andrzej M. Olés
Keyword(s):  
Band Structure ◽  
One Dimensional ◽  
The One

Electronic Structure of One-Dimensional Biradical Molecular Chain

2014 ◽  
Vol 1605 ◽  
Author(s):  
H. Koike ◽  
K. Ogawa ◽  
T. Kubo ◽  
K. Uchida ◽  
M. Chikamatsu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Photoelectron Spectroscopy ◽  
Organic Molecules ◽  
Molecular Chain ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Deposition Method ◽  
One Dimensional ◽  
The One

ABSTRACTWe investigated electronic structure of one-dimensional biradical molecular chain which is constructed by exploiting the covalency between organic molecules of a diphenyl derivative of s-indacenodiphenalene (Ph2-IDPL). To control the crystallinity, we used gas deposition method. Ultraviolet photoelectron spectroscopy (UPS) revealed developed band structure with wide dispersion of the one-dimensional biradical molecular chain.

Uniaxial Stress-Effect on the One-Dimensional Band Structure of [Pt (en)2][Pt (en)2Cl2](ClO4)4(en=ethylenediamine)

1987 ◽  
Vol 56 (3) ◽  
pp. 1197-1202 ◽  
Author(s):  
Masatoshi Tanaka ◽  
Wakahiko Kaneko ◽  
Susumu Kurita ◽  
Akio Yamada ◽  
Hirohito Fukutani
Keyword(s):  
Band Structure ◽  
Uniaxial Stress ◽  
Stress Effect ◽  
One Dimensional ◽  
The One

scholarly journals Investigating Optical Properties of One-Dimensional Photonic Crystals Containing Semiconductor Quantum Wells

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Mahshid Mokhtarnejad ◽  
Morteza Asgari ◽  
Arash Sabatyan
Keyword(s):  
Band Structure ◽  
Quantum Wells ◽  
Pump Pulse ◽  
Probe Pulse ◽  
Stark Effect ◽  
Optical Switch ◽  
Incident Angle ◽  
One Dimensional ◽  
Maximum Reflectivity ◽  
The One

This study examined MQWs made of InGaAs/GaAs, InAlAs/InP, and InGaAs/InP in terms of their band structure and reflectivity. We also demonstrated that the reflectivity of MQWs under normal incident was at maximum, while both using a strong pump and changing incident angle reduced it. Reflectivity of the structure for a weak probe pulse depends on polarization, intensity of the pump pulse, and delay between the probe pulse and the pump pulse. So this system can be used as an ultrafast all-optical switch which is inspected by the transfer matrix method. After studying the band structure of the one-dimensional photonic crystal, the optical stark effect (OSE) was considered on it. Due to the OSE on virtual exciton levels, the switching time can be in the order of picoseconds. Moreover, it is demonstrated that, by introducing errors in width of barrier and well as well as by inserting defect, the reflectivity is reduced. Thus, by employing the mechanism of stark effect MQWs band-gaps can be easily controlled which is useful in designing MWQ based optical switches and filters. By comparing the results, we observe that the reflectivity of MWQ containing 200 periods of InAlAs/InP quantum wells shows the maximum reflectivity of 96%.

Energy Band Structure for Metallic Polyacetylene

1992 ◽  
Vol 247 ◽  
Author(s):  
Chizuko Tanaka ◽  
Jiro Tanaka
Keyword(s):  
Electrical Properties ◽  
Band Structure ◽  
Ab Initio ◽  
Energy Band ◽  
Energy Band Structure ◽  
Molecular Structures ◽  
Model Compounds ◽  
Band Calculation ◽  
One Dimensional ◽  
The One

ABSTRACTThe optimized molecular structures of doped polyacetylene model compounds are studied by the ab initio SCF MO method. The calculated structures are assigned to polaron, charged soliton and poison unit. The one dimensional energy band structures of the charged soliton-antisoliton and the polson-antipolson lattices are investigated. The latter one gives a quasi-metallic energy band. The results of the energy band calculation are consistent with the electrical properties and ultraviolet photoemission spectra of the doped polyacetylene.

Acoustic band gap measurements in waveguides with periodic resonant structures

2005 ◽  
Vol 220 (9-10) ◽  
Author(s):  
John Ash ◽  
William M. Robertson
Keyword(s):  
Band Structure ◽  
Band Gap ◽  
Phase Information ◽  
One Dimensional ◽  
Resonant Structures ◽  
Amplitude Data ◽  
The One ◽  
Acoustic Dispersion ◽  
Gap Effects ◽  
Good Agreement

AbstractExperimental measurements, using an impulse response technique, are reported on a one-dimensional acoustic band gap system composed of a waveguide with a series of regularly spaced resonant structures. The amplitude data of the experimental results demonstrate the frequency and extent of the forbidden transmission bands and the phase information is analysed to determine the acoustic dispersion — the band structure — in the one-dimensional array. The results exhibit generally good agreement with previous theoretical analysis both in terms of the location of the forbidden transmission frequencies and in the form of the band structure. This simple system is a good candidate for the exploration of a number of postulated acoustic band gap effects.

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