Search results for anti counterfeiting technology

Nanomaterials May 2, 2024

Study unveils 3D printing PQD-polymer architectures at room temperature

A technology enabling the fabrication of intricate three-dimensional (3D) quantum dot (QD)-based structures at room temperature has been developed.

Optics & Photonics Mar 19, 2024

Combating counterfeiting: Advanced hologram protection invented

Counterfeiting of various documents, banknotes, or tickets is a common problem that can be encountered in everyday life, even when shopping. Recognizing the scale and seriousness of the problem, researchers at Kaunas University ...

Analytical Chemistry Mar 12, 2024

Tailoring raloxifene into single-component molecular crystals for multilevel stimuli-responsive phosphorescence

Smart materials that can rapidly respond to external stimuli possess immense potential for applications in anti-counterfeiting and encryption, data storage, sensors, bioimaging, and so on. However, most stimulus-responsive ...

Analytical Chemistry Feb 13, 2024

Color-changing materials could safeguard nuclear material, other valuable substances

Every over-the-counter medication bottle sports a protective seal, usually a plastic wrap or foam layer, or both. These seals offer signs of tampering attempts. In a parallel concern, the International Atomic Energy Agency ...

Optics & Photonics Feb 6, 2024

Multi-dimensional multiplexing optical secret-sharing framework with cascaded liquid crystal holograms

Information security has become particularly crucial under the background of the big data era. Optical secret-sharing schemes encrypt information and physically divide it into different shares. Information can only be decrypted ...

Nanophysics Jan 30, 2024

Researchers showcase new breakthroughs for unlocking the potential of plasmonics

Plasmonics are special optical phenomena that are understood as interactions between light and matter and possess diverse shapes, material compositions, and symmetry-related behavior. The design of such plasmonic structures ...

Nanophysics Nov 30, 2023

Creating 3D-printed materials that shrink more precisely

From houses to hearing aids, three-dimensional (3D) printing is revolutionizing how we create complex structures at scale. Zooming down to the micro and nano levels, a process known as two-photon polymerization lithography ...

Biochemistry Nov 28, 2023

Pressure-cooking birch leaves to produce raw material for organic semiconductors

Today, petrochemical compounds and rare metals such as platinum and iridium are used to produce semiconductors for optoelectronics, such as organic LEDs for super-thin TV and mobile phone screens. Physicists at UmeƄ University ...

Optics & Photonics Nov 2, 2023

Random wrinkles for opto-physical unclonable functions

The convergence of digital technology and the internet has led to the emergence of complex digital networks utilizing ubiquitous electronic devices such as mobile phones and smart home appliances. As a result, we can access ...

Nanophysics Oct 11, 2023

Micro/nanoscale 4D printing revolution: Manufacturing high-resolution transformable 3D structures

Have you ever imaged high-resolution 3D structures at the micro/nanoscale that react dynamically to their surroundings? The 4D printing technology is changing the game by using smart materials that exhibit remarkable shape ...

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