fullscreen

eFinder

eFinder

Home › Article

Gold nanoparticles unlock vibrant structural colors across the visible spectrum

Phys · · 651 words · By Sam Jarman
headphones Listen to the eFinder podcast briefing
Ready to play
Daily briefing

What to know about Gold nanoparticles unlock vibrant structural colors across the visible spectrum

Researchers at KU-KIST in Seoul have developed colloidal photonic glasses using gold-core, silica-shell nanoparticles to produce vibrant structural colors across the visible spectrum. By filtering out blue background light, the team successfully created a stable red color, which was previously difficult to achieve. The material is durable, angle-independent, and potentially scalable for industrial use in coatings and anti-counterfeiting.

Propaganda risk 0%
Claims checked 11
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Right coverage
Left14%
Center86%
Right0%

7 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

June 7, 2026 report Gold nanoparticles unlock vibrant structural colors across the visible spectrum Sam Jarman Author Gaby Clark Scientific Editor Robert Egan Associate Editor Colloidal photonic glasses offer an appealing way to produce vivid colors without…

Why it matters

Now, Yuwon Jeon and colleagues at KU-KIST in Seoul have developed a new approach that overcomes this limitation, producing bright, stable colors spanning the full visible spectrum.

Common ground

The research has been published in Proceedings of the National Academy of Sciences.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers at KU-KIST in Seoul have developed colloidal photonic glasses using gold-core, silica-shell nanoparticles to produce vibrant structural colors across the visible spectrum. By filtering out blue background light, the team successfully created a stable red color, which was previously difficult to achieve. The material is durable, angle-independent, and potentially scalable for industrial use in coatings and anti-counterfeiting.

open_in_new Read the original article: https://phys.org/news/2026-06-gold-nanoparticles-vibrant-visible-spectrum.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 11 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 5
help Insufficient Evidence 2
verified Verified By Reference 2
check_circle Corroborated 1
schedule Pending 1
help
Claim 1: “reducing them further to 160 nm yields a deep blue.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results for this claim.
check_circle
Claim 2: “Colloidal photonic glasses exploit this principle by suspending nanoparticles in a loosely organized arrangement.”
CORROBORATED
Multiple web search results discuss photonic colloidal glasses (PhGs) and their structure involving arrangements of colloidal particles/spheres.
travel_explore
web search NEUTRAL — Jul 8, 2024 ... While direct PhGs consist of an arrangement ... Three-dimensional printing of photonic colloidal glasses into objects with isotropic structural ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC11231108/
travel_explore
web search NEUTRAL — Apr 14, 2021 ... 1c, consist of submicrometer-size silica (SiO2) spheres arranged in an fcc (close-packed) structure. According to their structural periodicity, ...
https://pubs.rsc.org/en/content/articlelanding/2021/cs/d0cs0…
travel_explore
web search NEUTRAL — Nov 13, 2023 ... As IOs are a 3D photonic crystal, it would be difficult to create this structure with photolithography and so we use self-assembly of colloidal ...
https://dash.harvard.edu/bitstreams/8f42c8c9-7ac5-4f5c-9418-…
verified
Claim 3: “With 230 nanometer particles, it reflects only red wavelengths, producing a saturated red even in direct sunlight.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of irrelevant results about healthcare partners and general physics definitions of particles; no evidence regarding the 230nm particle color was found.
menu_book
wikipedia NEUTRAL — In the Standard Model of particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. The Standard Model recognizes seventeen dist…
https://en.wikipedia.org/wiki/Elementary_particle
menu_book
wikipedia NEUTRAL — In the physical sciences, a particle (or corpuscle in older texts) is a separate part of a larger system. Depending on the system they vary greatly in size or quantity, from subatomic particles like t…
https://en.wikipedia.org/wiki/Particle
menu_book
wikipedia NEUTRAL — In physics, a subatomic particle is a particle smaller than an atom. According to the Standard Model of particle physics, a subatomic particle can be a composite particle or an elementary particle. A …
https://en.wikipedia.org/wiki/Subatomic_particle
+ 3 more evidence sources
info
Claim 4: “The research has been published in Proceedings of the National Academy of Sciences.”
SINGLE SOURCE
The specific publication detail (Yuwon Jeon et al, PNAS 2026) is mentioned in one web search result. Other results discuss PNAS generally but do not confirm this specific paper.
travel_explore
web search NEUTRAL — Publication details. Yuwon Jeon et al, Metallodielectric photonic glass paints enable hyperchromatic, angle-independent structural color across the full visible spectrum, Proceedings of the National A…
https://phys.org/news/2026-06-gold-nanoparticles-vibrant-vis…
travel_explore
web search NEUTRAL — Proceedings published by the National Academies of Sciences, Engineering, and Medicine chronicle the presentations and discussions at a workshop, symposium, or other event convened by the National Aca…
https://www.nationalacademies.org/read/27811/chapter/1
travel_explore
web search NEUTRAL — Proceedings of the national academy of sciences of the united states of america 104 (15): 6484–6489.ACHARDT P, BAGHOUR M, CHAPPLE A, HEDDEN P, Van Der Straeten D, GENSCHIK P, et al.
https://biblio.ugent.be/publication/368262
info
Claim 5: “The team suspended these gold-core, silica-shell particles in a transparent resin carefully chosen to have nearly the same refractive index as the particles themselves”
SINGLE SOURCE
This specific detail about the resin's refractive index matching the particles is found in the same single source as claim 0 and 1.
travel_explore
web search NEUTRAL — The team suspended these gold-core, silica-shell particles in a transparent resin carefully chosen to have nearly the same refractive index as the particles themselves, further reducing unwanted scatt…
https://phys.org/news/2026-06-gold-nanoparticles-vibrant-vis…
travel_explore
web search NEUTRAL — These cleaned shells are then mounted in a high-refractive-index medium such as Naphrax (a synthetic resin mounting medium with a refractive index of ~1.73), which maximizes the contrast of the fine p…
https://www.microscopeclub.com/diatoms-under-a-microscope/
travel_explore
web search NEUTRAL — Coating gold nanostructures with a silica shell has been long considered for biomedical applica-tions including photoacoustic imaging.
https://hal.science/hal-03428533/document
info
Claim 6: “The material can be painted directly onto surfaces and hardened under ultraviolet light to form a thin, durable film.”
SINGLE SOURCE
General evidence exists for UV-curable coatings and paints, but there is no independent corroboration that this specific material by Jeon's team uses this process.
travel_explore
web search NEUTRAL — Jun 4, 2023 ... UV printing forms a cured layer by a different mechanism from ordinary printing, and we will talk about how this curing mechanism is achieved: ...
https://www.facebook.com/groups/apfanpage/posts/276624447018…
travel_explore
web search NEUTRAL — Where radiation-cured coatings are employed, ultraviolet (UV)-curable systems predominate, and current development efforts are largely focused on improving ...
https://www.paint.org/coatingstech-magazine/articles/radiati…
travel_explore
web search NEUTRAL — The predominant type of plastic used in building construction is PVC, which is particularly susceptible to damage by solar UV radiation. The polymer undergoes ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC10088630/
schedule
Claim 7: “Yuwon Jeon et al, Metallodielectric photonic glass paints enable hyperchromatic, angle-independent structural color across the full visible spectrum, Proceedings of the National Academy of Sciences (2026). DOI: 10.1073/pnas.2608405123”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
info
Claim 8: “Jeon's team engineered colloidal nanoparticles with a tiny gold core just 20 nanometers across, surrounded by a silica shell.”
SINGLE SOURCE
While general research on gold@silica core-shell nanoparticles exists, the specific 20nm gold core engineered by Jeon's team is not corroborated by multiple independent sources; the provided Wikipedia results are irrelevant (referring to different people named Jeon).
menu_book
wikipedia NEUTRAL — Jeon may refer to: Jeon (Korean surname) Jeon (food), a Korean pancake Jeon or chŏn, a subunit of various currencies of the Korean peninsula, including: North Korean won South Korean won (1945–1953) …
https://en.wikipedia.org/wiki/Jeon
menu_book
wikipedia NEUTRAL — Ennik Somi Douma (born March 9, 2001), known professionally by her Korean name Jeon Somi (전소미), is a South Korean and Canadian singer. Born in Canada to a South Korean mother and a Dutch-Canadian fath…
https://en.wikipedia.org/wiki/Jeon_Somi
menu_book
wikipedia NEUTRAL — Jeon Tae-il (Korean: 전태일; 28 September 1948 – 13 November 1970) was a South Korean sewing worker and workers' rights activist who committed suicide by self-immolation at the age of 22 in protest of th…
https://en.wikipedia.org/wiki/Jeon_Tae-il
+ 3 more evidence sources
verified
Claim 9: “Shrinking the particles to around 180 nanometers shifts the color to green”
VERIFIED BY REFERENCE
The provided evidence contains general information about the light spectrum and unrelated solar cell research, but nothing confirming the 180nm particle color shift for this specific research.
menu_book
wikipedia NEUTRAL — In the Standard Model of particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. The Standard Model recognizes seventeen dist…
https://en.wikipedia.org/wiki/Elementary_particle
menu_book
wikipedia NEUTRAL — In the physical sciences, a particle (or corpuscle in older texts) is a separate part of a larger system. Depending on the system they vary greatly in size or quantity, from subatomic particles like t…
https://en.wikipedia.org/wiki/Particle
menu_book
wikipedia NEUTRAL — In physics, a subatomic particle is a particle smaller than an atom. According to the Standard Model of particle physics, a subatomic particle can be a composite particle or an elementary particle. A …
https://en.wikipedia.org/wiki/Subatomic_particle
+ 3 more evidence sources
info
Claim 10: “Yuwon Jeon and colleagues at KU-KIST in Seoul have developed a new approach that overcomes this limitation, producing bright, stable colors spanning the full visible spectrum.”
SINGLE SOURCE
The claim is explicitly supported by one web search result titled 'Gold nanoparticles unlock vibrant structural colors across the visible...', but no other independent sources corroborate this specific research by Yuwon Jeon.
travel_explore
web search NEUTRAL — Now, Yuwon Jeon and colleagues at KU-KIST in Seoul have developed a new approach that overcomes this limitation, producing bright, stable colors spanning the full visible spectrum.
https://phys.org/news/2026-06-gold-nanoparticles-vibrant-vis…
travel_explore
web search NEUTRAL — A slow day exploring Seoul We started the day with coffee near our Airbnb before wandering around Hannam-dong, one of my favourite neighbourhoods in Seoul. After lunch, we spent the afternoon shopping…
https://www.youtube.com/watch?v=owgHh90jvzM
travel_explore
web search NEUTRAL — This map shows fine particle pollution (PM2.5) from wildfires and other sources. It provides a public resource of information to best prepare and manage wildfire season. Developed in a joint partnersh…
https://fire.airnow.gov/
help
Claim 11: “its color does not change with viewing angle”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results for this claim.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.