Linear and nonlinear optical properties of transfer ribonucleic acid (tRNA) thin solid films

Marjan Ghasemi, Hayoung Jeong, Donggyu Kim, Byungjoo Kim, Joon Ik Jang, Kyunghwan Oh

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We successfully obtained transfer ribonucleic acid (tRNA) thin solid films (TSFs) using an aqueous solution precursor in an optimized deposition process. By varying the concentration of RNA and deposition process parameters, uniform solid layers of solid RNA with a thickness of 30 to 46 nm were fabricated consistently. Linear absorptions of RNA TSFs on quartz substrates were experimentally investigated in a wide spectral range covering UV-VIS-NIR to find high transparency for λ > 350 nm. We analyzed the linear refractive indices, n(λ) of tRNA TSFs on silicon substrates by using an ellipsometer in the 400 to 900 nm spectral range to find a linear correlation with the tRNA concentration in the aqueous solution. The thermo-optic coefficient (dn/dT) of the films was also measured to be in a range −4.21 × 10−4 to −5.81 × 10−4 °C−1 at 40 to 90 °C. We furthermore characterized nonlinear refractive index and nonlinear absorption of tRNA TSFs on quartz using a Z-scan method with a femtosecond laser at λ = 795 nm, which showed high potential as an efficient nonlinear optical material in the IR spectral range.

Original languageEnglish
Pages (from-to)8661-8667
Number of pages7
JournalRSC Advances
Issue number14
Publication statusPublished - 2022 Mar 18

Bibliographical note

Funding Information:
We warmly thank Professor Jae Hoon Kim, Dr Bjorn Paulsan, Dr Yongjae Cho, and professor Seong Il Im for helping us with this work. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2019R1A2C2011293).

Publisher Copyright:
© The Royal Society of Chemistry

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


Dive into the research topics of 'Linear and nonlinear optical properties of transfer ribonucleic acid (tRNA) thin solid films'. Together they form a unique fingerprint.

Cite this