Polymer tapered pillar grown directly from an SMF core enables high efficiency optical coupling with a silicon photonics chip.

Silicon photonics technology has attracted considerable attention because of the growing need for high-bit-rate optical interconnections. The low coupling efficiency resulting from the difference in spot size between silicon photonic chips and single-mode fibers remains a challenging issue. This study demonstrated a new, to the best of our knowledge, fabrication method for a tapered-pillar coupling device using a UV-curable resin on a single-mode optical fiber (SMF) facet.

Polymer spot size converter on silicon photonics chip for enabling high coupling to single-mode fiber.

Silicon photonics (SiPh) technology has gained considerable attention as a result of the growing demand for high-bit-rate optical interconnections. Low coupling efficiencies, resulting from the difference in spot size between silicon photonic chips and single-mode fibers (SMFs), remains a challenging issue. To solve this problem, we fabricated a novel, to the best of our knowledge, polymer spot size expander (SSE) device on the end face of a silicon chip.

National database study on the use of long-acting antipsychotic injections and hospital readmission proportions in patients with schizophrenia in Japan.

Aim: It is important to investigate the current prescription status and clinical outcomes of patients with schizophrenia receiving long-acting antipsychotic injections. We aimed to determine the prescription proportion of long-acting antipsychotic injections and hospital readmission proportions of patients with schizophrenia in Japan.

Methods: An open dataset was created using data from the National Database of Health Insurance Claims and Specific Health Checkups of Japan.

Early bone formation around calcium-ion-implanted titanium inserted into rat tibia.

Rat tibia tissue into which calcium ion (Ca2+)-implanted titanium was surgically placed was histologically analyzed to investigate the performance of the Ca(2+)-implanted titanium as a biomaterial. Calcium ions were implanted into only one side of titanium plates at 10(17) ions/cm2 and the Ca(2+)-treated titanium was surgically implanted into rat tibia for 2, 8, and 18 days. Tetracycline and calcein were used as hard-tissue labels.