We developed a flexible printed circuit (FPC) RF interface InP-based high-bandwidth coherent driver modulator (CDM) for 128-Gbaud class operations. To increase the bandwidth of CDM, an FPC was introduced to CDM package, which significantly improved roll-off frequency by about 40 GHz compared with conventional package surface-mount-type interface. The has 3-dB 75 and above 110 GHz. These are bes...

Aluminum alloys containing Sc are promising materials for high-temperature structural applications due to the high strengthening effect of the Al3Sc (L12 structure) precipitates [1]. Further improvements in strength and nanostructural stability of Al-Sc based alloys are achieved by adding alloying elements, such as Mg, as solid-solution strengtheners. It is important to understand the effects o...

Molecular dynamics simulations are used to examine the effect of interfacial species mixing on the thermal conductivity of Stillinger-Weber Si /Si0.7Ge0.3 and Si/Ge superlattices at a temperature of 500 K. The thermal conductivity of Si /Si0.7Ge0.3 superlattices is predicted to not depend on the interfacial species mixing and to increase with increasing period length. This period length depende...

Molecular Dynamics (MD) is employed to investigate nonthermal melting triggered by coherent phonon excitation in bismuth telluride, which has Peierls distortion in the lattice structure. Results showed that the structural distortion caused by coherent phonons appears as early as 80 fs, while it takes several picoseconds for the whole phononexcited area to evolve into a liquid state. It was also...

It has been demonstrated that C54 TiSi2 phase formation can be significantly enhanced by multi-thermal-shock (MTS) method. In this work, the enhancement mechanism of C54 phase formation and the interfacial reactions between TiSi2 and Si were investigated. The results indicate that the semi-coherent interface between TiSi2 C49 phase and Si substrate may be responsible for the rough surface of th...