Induction heating ferromagnetic particles embedded PDMS mold for microstructure embossing

Mold cleaning with polydimethylsiloxane (PDMS) for nanoimprint lithography

We present a simple and effective mold cleaning method for nanoimprint lithography. Polydimethylsiloxane (PDMS) prepolymer is spin-coated onto a contaminated imprint mold, thermally cured in ambient environment, and then peeled off afterwards. Contaminants of 100s m to sub-50 nm sizes are effectively cleaned within one cycle. During the cleaning process, a very thin PDMS film (1~2 nm) is unifo...

Numerical study of induction heating by micro / nano magnetic particles in hyperthermia

Hyperthermia is one of the first applications of nanotechnology in medicine by using micro/nano magnetic particles that act based on the heat of ferric oxide nanoparticles or quantum dots in an external alternating magnetic field. In this study, a two-dimensional model of body and tumor tissues embedded is considered. Initially, the temperature distribution is obtained with respect to tumor pro...

Development of Ti-Coated Ferromagnetic Needle, Adaptable for Ablation Cancer Therapy by High-Frequency Induction Heating

To develop a novel ablation therapy for human solid cancer, the heating properties of a ferromagnetic carbon steel rod and a prototype Ti-coated needle using this carbon steel rod, were investigated in several high-frequency outputs at 300 kHz. In the former, the heating property was drastically different among the three inclination angles (θ = 0°, 45° and 90°) relative to the magnetic flux dir...

Phase-field model of multiferroic composites: Domain structures of ferroelectric particles embedded in a ferromagnetic matrix

The ferroelectric domain structures in 1-3 type bulk magnetoelectric composites were studied using the phase-field method. The ferroelectric polarization distributions in triangle, square, circle, and other polygonsshaped rods embedded in a ferromagnetic matrix were obtained. The influences of ferroelectric particle size and symmetry and the surrounding magnetic phase medium on the stability of...

Development of a Model for Induction Heating