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Optical thermometry probe via fiber containing β-NaLuF4:Yb3+/Er3+/ Tm3+
Muhammad Khuram Shahzad,Yundong Zhang,Muhammad Usman Khan,Harse Sattar,Muhammad Ikram 한국물리학회 2019 Current Applied Physics Vol.19 No.6
In this article, β-NaLuF4:Yb3+/Tm3+/Er3+ were synthesized by thermal decomposition technique. Yb3+/Tm3+/ Er3+ has been firstly manifested to fabricate the microfibers after co-doping with polymer solution. The guiding performance of a microfiber was observed under 980 nm excitation source to prove that it could be used as an active and passive waveguides. The characteristics of optical thermal sensing of Tm3+ and Er3+ ions in a single microfiber were demonstrated. The FIR method was utilized to evaluate the sensitivity of a single microfiber and maximum sensitivity of activator ions in a microfiber was achieved as 0.00124 and 0.00311 K-1 with temperature ranging from 303 to 363 K, respectively. Our results suggest that a single microfiber has good sensing stability and has potential applications in the field of thermometry.
Ergonomics Health Impact of Kids while Using Digital Devices
Omer Iqbal,Muhammad Waseem Iqbal,Muhammad Raza Naqvi,Muhammad Aqeel,Syed Khuram Shahzad 한국차세대컴퓨팅학회 2021 한국차세대컴퓨팅학회 학술대회 Vol.2021 No.11
All over the world work-related musculoskeletal disorders are starting to take hold among digital device users, especially computer users. Weakness, sleepiness, shoulder pain, back pain/solidness/pain in the neck, and cerebral pain are quite often recorded as clear indicators during or after the use of personal computers, laptops, and devices. The most painful fact is that all these delicate indicators are routinely ignored as a sign of general weakness in most cases. This research work highlights this issue under the belt of Ergonomics. How can construct personal computers, laptops, and their associated equipment to be more human-friendly so that these serious health risks can be avoided, particularly in children. The paper also highlights previous important studies conducted at elementary levels of this subject.