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NIST Researchers Introduce Breakthrough Formula for Particle Number Concentration Understanding the number of particles in a sample is a fundamental task across multiple scientific fields — from nanotechnology to food science. Scientists use a measure called Particle Number Concentration (PNC) to determine how many particles exist in a given volume, much like counting marbles in a jar. Recently, researchers at the National Institute of Standards and Technology (NIST) have developed a novel formula that calculates particle concentrations with unprecedented accuracy. Their work, published in Analytical Chemistry , could significantly improve precision in drug delivery, nanoplastic assessment and monitoring food additives. Related reading on Nanotechnology advancements: AI systems for real-time flood detection . What is Particle Number Concentration (PNC)? Defining PNC Particle Number Concentration indicates the total count of particles within a specific volume of gas or liquid,...

Quantum Breakthrough: Scientists Create Device to Measure Ampere, Volt and Ohm in One System Introduction Scientists have unveiled a revolutionary quantum-based device capable of accurately recording all three fundamental electrical units: the ampere (current), the volt (potential) and the ohm (resistance). Unit now, no instrument could perform these three precise measurements within a single system. This innovation marks a historic milestone in metrology, opening new possibilities for precision engineering and minimizing human error in electrical measurements. How the Device Works Bringing Two Quantum Systems Together Jason Underwood and his team at the National Institute of Standards and Technology (NIST) in Maryland demonstrated the feasibility of this device by combining two critical quantum systems inside one cryostat : The Quantum Anomalous Hall Resistor (QAHR) The Programmable Josephson Voltage Standard (PJVS) The cryostat plays a vital role by maintaining ultra-low temper...