The Effect of Combining Femtosecond Laser and Electron Irradiation on Silica Glass.

This study investigates the structural and optical responses of silica glass to femtosecond (fs) laser irradiation followed by high-energy electron (2.5 MeV, 4.9 GGy) irradiation.

The variation in axial length in office hours causes a diopter change in the intraocular lens power calculation.

Purpose: To investigate whether diurnal changes in biometric parameters at different times of the day are visible and to analyze whether the variations could have clinical significance in the process of intraocular lens (IOL) power calculation.

Methods: Phakic eyes measured by IOLMaster 700 above the age of 16 were included, with the exclusion of previous surgery. Measurements were taken between 7:00 and 15:00 and data were treated in hourly groups within this range.

Precision of Cup Positioning Using a Novel Computed Tomography Based Navigation System in Total Hip Arthroplasty.

: Navigation systems are designed to enhance surgical precision, improving patient outcomes and reducing the risk of implant misplacement. In this study, we have evaluated a novel orthopedic surgical platform that utilizes CT imaging with AI-based algorithms to automate several critical aspects of total hip arthroplasty. It contains three modules-preoperative planning, navigation during surgery, and follow-up analysis.

Nano-FTIR spectroscopy reveals SiO densification within fs-laser induced nanogratings.

This study explores the structural transformations induced by femtosecond (fs) laser inscriptions in glass, with a focus on type II modifications (so-called nanogratings), crucial for advanced optical and photonic technologies. Our novel approach employs scattering-type scanning near-field optical microscopy (s-SNOM) and synchrotron radiation nanoscale Fourier-transform infrared spectroscopy (nano-FTIR) to directly assess the nanoscale structural changes in the laser tracks, potentially offering a comprehensive understanding of the underlying densification mechanisms. The results reveal the first direct nanoscale evidence of densification driven by HP-HT within fs-laser inscribed tracks, characterized by a significant shift of the main infrared (IR) vibrational structural band of silica glass.