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Home Physical Review Letters

New Framework Unifies Space and Time in Quantum Systems

Their findings have been published in Physical Review Letters on December 5, 2025.

New Framework Unifies Space and Time in Quantum Systems

Abstract The theory of quantum states over time extends the density operator formalism into the temporal domain, providing a unified treatment of timelike and spacelike separated systems in quantum theory. Although recent results have chara... Read More

Dec 30, 2025 By JooHyeon Heo Research
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The Role of Motility in Bacterial Partitioning and Active Matter Dynamics in Aqueous Two-Phase Systems

The findings of this research have been published in the online version of Physical Review Letters on September 16, 2025.

The Role of Motility in Bacterial Partitioning and Active Matter Dynamics in Aqueous Two-Phase Systems

Abstract We study the partitioning of motile bacteria in an aqueous two-phase mixture of dextran (DEX) and polyethylene glycol (PEG), which can phase separate into DEX-rich and PEG-rich phases. While nonmotile bacteria partition exclusively... Read More

Oct 24, 2025 By JooHyeon Heo Research
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Tunneling Magnetoresistance in Altermagnetic RuO2-Based Magnetic Tunnel Junctions

The findings were published in Physical Review Letters on June 20, 2025.

Tunneling Magnetoresistance in Altermagnetic RuO2-Based Magnetic Tunnel Junctions

Abstract Altermagnets exhibit characteristics akin to antiferromagnets, with spin-split anisotropic bands in momentum space. RuO2 has been considered as a prototype altermagnet; however, recent reports have questioned altermagnetic ground s... Read More

Jul 17, 2025 By JooHyeon Heo Research
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Initial Solvent-Driven Nonequilibrium Effect on Structure, Properties, and Dynamics of Polymer Nanocomposites

Their findings have been published in Physical Review Letters on October 17, 2019.

Initial Solvent-Driven Nonequilibrium Effect on Structure, Properties, and Dynamics of Polymer Nanocomposites

The combination of nanoparticles and polymers within a material, allows the development of composite materials with desired properties. Plastics, made from polymers, are generally lightweight, yet tend to be brittle and easy to break. This... Read More

Nov 18, 2019 By JooHyeon Heo Research
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Investigation on the Chemical Reactivity of Graphene Bubbles

The work by Distinguished Professor Rodney S. Ruoff has been published in Physical Review Letters.

New study predicts, measures, and controls the temperature of large graphene bubbles with a single laser beam.

Investigation on the Chemical Reactivity of Graphene Bubbles

A recent study, affiliated with UNIST has measured and controlled the temperature of individual graphene bubbles with a single laser beam for the first time. This study has been led by Distinguished Professor Rodney S. Ruoff (School of Natu... Read More

May 14, 2018 By JooHyeon Heo Research
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Scientists Move Step Closer to Solving Fusion Plasma Dilemma

Prof. Hyeon K. Park's team solves the key challenges of fusion plasma.

Experimental result provides new paradigm for the interpretation of ELM-crash suppression.

Scientists Move Step Closer to Solving Fusion Plasma Dilemma

A team of researchers, affiliated with UNIST claims to have made yet another step towards finding a solution to one of the critical but unsolved fusion plasma physics problems, which is to mitigate or suppress the potentially harmful plasma... Read More

Sep 10, 2016 By JooHyeon Heo Research
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A Step Toward Quantum State Selection of Non-polar Molecules

Paving the way for selecting a specific state of nonpolar molecules.

Lee Yeong Kim of Physics (right) and Prof. Bum Suk Zhao of Chemistry/Physics (left) are posing for a portrait.

A recent study, affiliated with UNIST has reported a novel approach to get one step closer to separation of non-polar molecules in different rotational quantum states. This study has been conducted by a UNIST student, Lee Yeong Kim (Departm... Read More

Dec 08, 2015 By JooHyeon Heo Research
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