Filters and Topics
Search Results
AI Overview
Angle-dependent
optical effect pigments, often pearlescent, are created by coating substrate platelets (like mica) with high-refractive-index
. These pigments exhibit a "color travel" or "luster flop" (changing color based on viewing angle) through light interference, with 3-to-4 layer structures (
) enhancing this effect for applications in coatings, inks, and plastics.
Key Aspects of
Angle-Dependent Pigments:
- Mechanism: They work through optical interference. The thin, high-refractive-index layer () on a lower-index substrate (like mica) causes light to reflect at different wavelengths depending on the angle, creating pearlescent effects or color shifts.
- Structure: Common structures are platelets of mica coated with . The thickness of thelayer determines the interference color.
- Multi-layer Enhancement: Increasing the number of layers (e.g., adding ,, or) creates stronger angle-dependent color travel, particularly from 15° to 25° viewing angles.
- Rutile vs. Anatase: The rutile crystalline form of is often preferred due to its higher refractive index (), which provides superior brightness, hiding power, and a more vibrant interference effect.
- Applications: Primarily used in automotive paints, plastics, and decorative coatings for a high-value metallic or pearl appearance.
These pigments are engineered for high color saturation and brightness in applications requiring premium aesthetic finishes.
Show all
Show more
An investigation of angle-dependent optical properties ...
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
by H Du2008Cited by 37 — The results show that the angle-dependent effect and reflection rate of the pigment were improved by the increasing coated layers from three to four-layer ...Read more
Angle-Dependent Optical Effects Deriving from Submicron ...
ACS Publications
https://pubs.acs.org › doi
ACS Publications
https://pubs.acs.org › doi
by G Pfaff1999Cited by 486 — Angle-Dependent Optical Effects Deriving from Submicron Structures of Films and Pigments ... Phase-Dependent Photocatalytic Ability of TiO2: A First ...Read more
Scholarly articles for Angle dependent optical effect pigment Tio2 | |
An investigation of angle-dependent optical properties … - Du - Cited by 37 Angle-dependent light scattering in materials with … - Jonsson - Cited by 18 TiO2 pigment technology: a review - Braun - Cited by 609 | |
Angle dependent optical effect pigment Tio2
China AAB Industry Technology Group
https://www.aabindustrygroup.com › angle-dependent-o...
China AAB Industry Technology Group
https://www.aabindustrygroup.com › angle-dependent-o...
It is also suitable for wood lacquers to enhance UV protection. This product is a comparable alternative to other micro titanium dioxide pigments such as RM200, ...
Polymers, Light and the Science of TiO - Ti-Pure
tipure.com
https://www.tipure.com › files › tipure › legacy
tipure.com
https://www.tipure.com › files › tipure › legacy
PDF
by T Dioxide — Unlike colored pigments that provide opacity by absorbing visible light, titanium dioxide and other white pigments provide opacity by scattering light. This ...Read more
Non-iridescent yet angle-dependent structural colors ... - PMC
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC12397728
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC12397728
by XS Yu2025Cited by 3 — Among optically variable color, the color dependent on the viewing angle has become an important means of anti-counterfeiting [4] for banknotes, confidential ...Read more
Wet-Chemical Processing and Angle-Dependent Optical ...
Scientific.net
https://www.scientific.net › MSF.663-665.1053
Scientific.net
https://www.scientific.net › MSF.663-665.1053
by HY Du2011Cited by 1 — Abstract: The four-layer structure angle-dependent pigments with compositions of Mica/TiO2 /Al2O3/Fe2O3, Mica/TiO2/Al2O3/Cr2O3 and Mica/TiO2/Al2O3/Co2O3 ...Read more
Manufacture of TiO2/mica pearl pigment and its angle- ...
ResearchGate
https://www.researchgate.net › ... › Pigmentation
ResearchGate
https://www.researchgate.net › ... › Pigmentation
Angle-dependent pearlescent pigment was produced by the way of liquid phase deposition, SEM, XRD, UV-Vis spectrophotometer were adopted to analysis the ...
Optical Coatings for Special Effect Pigments
The Society of Vacuum Coaters
https://www.svc.org › directory › resource_library
The Society of Vacuum Coaters
https://www.svc.org › directory › resource_library
PDF
TiO2-mica pigments are used in all color formulations of conventional pigments where brilliance and luster are re- quired in addition to color, i.e. in plastics ...Read more
7 pages
Uniform deposition of ultra-thin TiO2 film on mica substrate ...
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
by M Liu2023Cited by 6 — In substrate-based pearlescent pigments, the lustrous and angle-dependent optical effects are enhanced because of the big difference in refractive index ...Read more
an analysis of model core -- shell pigments vs. optimized ...
TAPPI.org
https://imisrise.tappi.org › download
TAPPI.org
https://imisrise.tappi.org › download
PDF
Opacification by titanium dioxide is due primarily to scattering of visible light. It is well documented that the efficiency of TiO2 for light scattering is ...Read more