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Title: Stability enhancement of an electrically tunable colloidal photonic crystal using modified electrodes with a large electrochemical potential window

The color tuning behavior and switching stability of an electrically tunable colloidal photonic crystal system were studied with particular focus on the electrochemical aspects. Photonic color tuning of the colloidal arrays composed of monodisperse particles dispersed in water was achieved using external electric field through lattice constant manipulation. However, the number of effective color tuning cycle was limited due to generation of unwanted ions by electrolysis of the water medium during electrical switching. By introducing larger electrochemical potential window electrodes, such as conductive diamond-like carbon or boron-doped diamond, the switching stability was appreciably enhanced through reducing the number of ions generated.
Authors:
 [1] ;  [2] ; ; ; ; ; ; ; ;  [1] ; ;  [3]
  1. Samsung Advanced Institute of Technology, Yongin-Si, Gyeonggi-do (Korea, Republic of)
  2. (Korea, Republic of)
  3. Department of Chemistry, Seoul National University, Seoul (Korea, Republic of)
Publication Date:
OSTI Identifier:
22283267
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON; COLOR; CRYSTALS; DIAMONDS; ELECTRIC CONDUCTIVITY; ELECTRIC FIELDS; ELECTROCHEMISTRY; ELECTRODES; ELECTROLYSIS; LATTICE PARAMETERS; PHASE STABILITY; POTENTIALS; WATER