Fast Dynamic Control of Stacked Low Inertia Converters

2018 ◽  
Author(s):  
Liran Zheng ◽  
Rajendra Prasad Kandula ◽  
Karthik Kandasamy ◽  
Deepak Divan
Keyword(s):  
Dynamic Control ◽  
Fast Dynamic

scholarly journals Neural control of tuneable skin iridescence in squid

2012 ◽  
Vol 279 (1745) ◽  
pp. 4243-4252 ◽  
Author(s):  
T. J. Wardill ◽  
P. T. Gonzalez-Bellido ◽  
R. J. Crook ◽  
R. T. Hanlon
Keyword(s):  
Neural Control ◽  
Incident Light ◽  
Dynamic Control ◽  
Activation Mechanism ◽  
Structural Coloration ◽  
Nanoscale Structures ◽  
Reflected Light ◽  
Skin Coloration ◽  
Reflectance Change ◽  
Fast Dynamic

Fast dynamic control of skin coloration is rare in the animal kingdom, whether it be pigmentary or structural. Iridescent structural coloration results when nanoscale structures disrupt incident light and selectively reflect specific colours. Unlike animals with fixed iridescent coloration (e.g. butterflies), squid iridophores (i.e. aggregations of iridescent cells in the skin) produce dynamically tuneable structural coloration , as exogenous application of acetylcholine (ACh) changes the colour and brightness output. Previous efforts to stimulate iridophores neurally or to identify the source of endogenous ACh were unsuccessful, leaving researchers to question the activation mechanism. We developed a novel neurophysiological preparation in the squid Doryteuthis pealeii and demonstrated that electrical stimulation of neurons in the skin shifts the spectral peak of the reflected light to shorter wavelengths (greater than 145 nm) and increases the peak reflectance (greater than 245%) of innervated iridophores. We show ACh is released within the iridophore layer and that extensive nerve branching is seen within the iridophore. The dynamic colour shift is significantly faster (17 s) than the peak reflectance increase (32 s), revealing two distinct mechanisms. Responses from a structurally altered preparation indicate that the reflectin protein condensation mechanism explains peak reflectance change, while an undiscovered mechanism causes the fast colour shift.

Generation of a coherent light beam with precise and fast dynamic control of the state and degree of polarization

2017 ◽  
Vol 42 (15) ◽  
pp. 2898 ◽  
Author(s):  
Noé Ortega-Quijano ◽  
Julien Fade ◽  
François Parnet ◽  
Mehdi Alouini
Keyword(s):  
Light Beam ◽  
Dynamic Control ◽  
The State ◽  
Degree Of Polarization ◽  
Coherent Light ◽  
Fast Dynamic ◽  
Coherent Light Beam

A Transformer-Less Unified Power Quality Conditioner with Fast Dynamic Control

2018 ◽  
Vol 33 (5) ◽  
pp. 3926-3937 ◽  
Author(s):  
Victor Sui-Pung Cheung ◽  
Ryan Shun-Cheung Yeung ◽  
Henry Shu-Hung Chung ◽  
Alan Wai-Lun Lo ◽  
Weimin Wu
Keyword(s):  
Power Quality ◽  
Dynamic Control ◽  
Unified Power Quality Conditioner ◽  
Power Quality Conditioner ◽  
Fast Dynamic

Ultra-fast dynamic control of the Q factor in a photonic crystal nanocavity

2008 ◽  
Author(s):  
Yoshinori Tanaka ◽  
Jeremy Upham ◽  
Takushi Nagashima ◽  
Tomoaki Sugiya ◽  
Takashi Asano ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Dynamic Control ◽  
Q Factor ◽  
Fast Dynamic
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