POSTECH Physics department conducts diverse research on overall physics field, including condensed matter physics, plasma and particle beam physics, biophysics/complex system physics, optical physics and computational physics/particle physics. Also to improve global visibility, POSTECH physics department investigate in enhancing both individual professors’ capability and network among global research groups. Research on condensed matter physics, biophysics/complex system physics and optical physics are strongly performed to give solutions for future energy problem or biological/informational/social problems. In addition, research on computational physics and particle physics, potential growth area, are increasing rapidly. In the experimental field, research groups such as Pohang accelerator laboratory (PAL), Institute for Basic Science (IBS), Max Plank POSTECH/Korea (MPK) conducting research with high-tech equipment. The theoretical groups have collaboration work with APCTP, using common cluster system and PLS.
Condensed Matter Physics Division
Experimental Condensed Matter Physics group
Experimental groups research in several phenomena of condensed matter physics as electronic, magnetic, structural or dynamic properties through experiments with various techniques. They use technology such as superconductivity, cryophysics, surface physics, vacuum, radiated light with high-tech equipment on PAL, IBS and MPK. In addition, composite materials and nanomaterials fields are developed not only in individual level, but also in fusion research for the future energy research.
Theoretical CMP groups study all phenomena such as electronic, magnetic, structural, and dynamic occurring on various structures; surfaces, interfaces and super lattices, of metal, semiconductor, magnetic substances, or superconductor. They try to understand properties of matters by considering both real and theoretic system and to provide theoretic proofs in the co-work with experimental groups. Especially, computational simulation with common cluster system and PLS is active in those groups.
Biophysics/complex system physics groups seek for the basic understanding of various phenomena - collective dynamics, patterns, chaos, phase transition and etc - which is formulated by interactions in complex systems, especially bio-system. Biophysics/complex system physics uses various physical tools including statistical dynamics, non-linear dynamics and condensed matter theory.
Plasma and Particle Beam Physics groups study dynamics and properties under the electromagnetic field of charged particles. The research focuses on both experimental and theoretical investigation of basic properties of charged particle system as well as applications to various fields. In the plasma physics, the topics include laser-produced plasma, linear Z-pinch plasma dynamics, magneto-hydrodynamics, low temperature plasma physics, and nuclear fusion plasma heating technology. The latter topic also includes research and development of the tokamak device and its technology transfer to the industry. This activity is particularly important for Korea Superconducting Tokamak Advanced Research (KSTAR) which is under construction in Daedeok, Korea.
Research topics in Particle Beam Physics include the design of various accelerators, the improvement of accelerator performances by investigating various nonlinear properties of the beam, and the development of advanced diagnostic devices and computer control systems. These activities are closely related to the 2.5-GeV electron linac and the synchrotron radiation source named Pohang Light Source in the Pohang Accelerator Laboratory. The research area includes relativistic beam such as the design of a high power microwave (HPM) source, electrogun, medical cyclotron as well as theoretical and numerical study of wake-field acceleration. The design study of a HPM source aims at designing a relativitic backward-wave oscillator (RBWO) for military purpose. With a collaboration with Korea Cancer Center Hospital (KCCH) in Seoul, construction of a cyclotron has been going on which is to be used for positron emission tomography (PET) diagnostics.
In the Optics group, both basic and applied optics are dealed. On the fundamental side, our interest lies in the quantum optical phenomena that cannot be explained by the classical theory of light. The entangled photon pairs, generated in some nonlinear optical processes like parametric down-conversion, exhibit very peculiar nonlocal correlation effects. The entanglement also plays very important roles in quantum teleportation, quantum cryptography, and quantum computation. On the application side, we develop phase-shifting electronic speckle pattern interferometer to measure the deformation and vibration of objects with nanometer scale precision. We also apply the phase-shifting method to 3-dimensional shape measurement.
Computational Physics and Particle Physics Division
Computing physics group simulate physics theories using computers and also develop programs and hardware for physics simulation. In group of theoretical particle physics, they research on properties of neutrino and superstring theory.