Background: The use of disease-specific scales would be more valuable for the evaluation of the effects of lymphedema. To manage accordingly, and maintain the optimum quality of life of lymphedema patient, a validated outcome measure is helpful.Objective: To investigate the reliability and validity of Bangla Version of Lymphedema Life Impact Scale Version 2 (B-LLIS V2).Materials and Methods: A structured process that included translation, verification, compromise assessment, reverse translation, feedback, and final correction. B-LLIS V2 reliability and validity were conducted on 52 lymphedema patients. The reliability was evaluated by performing internal consistency and test–retest analyses. Its validity was assessed by comparing the B-LLIS V2 with other scales implying Pearson’s correlation.Results: Internal consistency with Cronbach’s alpha was 0.92 for total score and 0.79, 0.82, 0.80 and 0.78 for physical, psychosocial, functional, and infection respectively. The calculated overall tool score in Intra-class correlation co-efficient (ICC) for test-retest reliability was 0.94 and among subscales, the scores were 0.92, 0.95, 0.91 and 0.93 for physical, Psychosocial, functional, and infection respectively, which signified substantial reliability. The overall values of Pearson’s correlation coefficient for the construct validity were 0.91, 0.78 and 0.86 against reference standard Bengali SF-36 Health Survey, Bangla version of the Boston Carpal Tunnel Questionnaire and Bangla Start Back Screening Tool, and they all were statistically significant.Conclusions: B-LLIS V2 is a valid and reliable tool for the assessment of impairment due to lymphedema. KYAMC Journal Vol. 13, No. 04, January 2023: 198-203

Polar dielectrics are key materials of interest for infrared (IR) nanophotonic applications due to their ability to host phonon‐polaritons (PhPs) that allow for low‐loss, subdiffractional control of light. The properties of phonon‐polaritons are limited by the characteristics of optical phonons, which are nominally fixed for most “bulk” materials. Superlattices composed of alternating atomically‐thin materials offer control over crystal anisotropy through changes in composition, optical phonon confinement, and the emergence of new modes. In particular, the modified optical phonons in superlattices offer the potential for so‐called crystalline hybrids whose IR properties cannot be described as a simple mixture of the bulk constituents. To date, however, studies have primarily focused on identifying the presence of new or modified optical phonon modes rather than assessing their impact on the IR response. This study focuses on assessing the impact of confined optical phonon modes on the hybrid IR dielectric function in superlattices of GaSb and AlSb. Using a combination of first principles theory, Raman, FTIR, and spectroscopic ellipsometry, the hybrid dielectric function is found to track with the confinement of optical phonons, leading to optical phonon spectral shifts of up to 20 cm−1. These results provide an alternative pathway towards designer IR optical materials.This article is protected by copyright. All rights reserved