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Search results for gold nanoparticles

Bio & Medicine Mar 24, 2026

A much more sensitive fentanyl detection strip, thanks to physics

Following the beginning of the COVID-19 outbreak, lateral flow assays (LFAs)—the category of test strips in which the presence or lack of a pink line indicates whether a specific molecule, like a drug or a virus, has been ...

Bio & Medicine Mar 16, 2026

Breathing in nanoparticles could enable a 10-minute pneumonia check at point of care

Diagnosing some diseases could be as easy as breathing into a tube. MIT engineers have developed a test to detect disease-related compounds in a patient's breath. The new test could provide a faster way to diagnose pneumonia ...

Bio & Medicine Feb 13, 2026

Why phage contamination is hard to kill, and how charged nanoparticles could help

Bacteriophages are viruses that can kill bacteria through highly specific interactions. While this property can be beneficial in selected applications, bacteriophages represent a serious threat to laboratories and industries ...

Optics & Photonics Jan 27, 2026

'Spectral slimming' yields ultranarrow plasmons in single metal nanoparticles

Researchers have developed a new strategy to overcome a long-standing limitation in plasmonic loss by reshaping light–matter interactions through substrate engineering.

Earth Sciences Jan 26, 2026

Scientists reveal gold precipitation mechanism at pyrite-water interface

Gold is generally associated with pyrite (iron disulfide, FeS2), and pyrite-induced gold precipitation is critical to the formation of high-grade gold deposits. However, the role of pyrite in precipitating gold from fluids ...

Nanophysics Jan 15, 2026

Charging gold nanorods with light energy

Gold nanorods are promising photocatalysts that can use light energy to drive chemical reactions—such as converting CO₂ into usable fuels or producing hydrogen from water. In this process, the nanorods act like tiny antennas ...

Polymers Jan 5, 2026

Smart polymers harden on demand with light or gentle heat activation

Chemists at Ben-Gurion University of the Negev have developed a "smart" polymer that could make industrial curing, 3D printing and repairs simpler, safer and more energy-efficient with materials whose properties may be tuned ...

Analytical Chemistry Dec 31, 2025

Sunlight-driven nanoparticles enable cleaner ammonia synthesis at room temperature

Ammonia (NH3) is a colorless chemical compound comprised of nitrogen and hydrogen that is widely used in agriculture and in industrial settings. Among other things, it is used to produce fertilizers, as well as cleaning products ...

Bio & Medicine Dec 8, 2025

Plant-virus proteins guide gold nanoparticles into eco-friendly sheets for solar tech

Using proteins from a common tobacco plant virus, McGill chemistry researchers have developed a simple, eco-friendly way to arrange gold nanoparticles into ultrathin sheets, strengthening the particles' optical properties. ...

Bio & Medicine Nov 11, 2025

Harnessing algae for a greener way to create functional gold nanoparticles

Researchers from Japan have pioneered a novel, sustainable method for synthesizing functionalized gold nanoparticles (AuNPs) using microalgae. The work is published in the journal ACS Sustainable Chemistry & Engineering.

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