- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Multi-Purpose Nanovoid Array Plasmonic Sensor Produced by Direct Laser Patterning
摘要： We demonstrate a multi-purpose plasmonic sensor based on a nanovoid array fabricated via inexpensive and highly-reproducible direct femtosecond laser patterning of thin glass-supported Au films. The proposed nanovoid array exhibits near-IR surface plasmon (SP) resonances, which can be excited under normal incidence and optimised for specific applications by tailoring the array periodicity, as well as the nanovoid geometric shape. The fabricated SP sensor offers competitive sensitivity of ≈ 1600 nm/RIU at a figure of merit of 12 in bulk refractive index tests, as well as allows for identification of gases and ultra-thin analyte layers, making the sensor particularly useful for common bioassay experiments. Moreover, isolated nanovoids support strong electromagnetic field enhancement at lattice SP resonance wavelength, allowing for label-free molecular identification via surface-enhanced vibration spectroscopy.
关键词： refractive index and gas sensing,nanovoid arrays,direct femtosecond laser printing,plasmonic sensors
更新于2025-09-12 10:27:22
-
Performance characterization of continuous-wave laser-induced forward transfer of liquid bioink
摘要： Herein, we propose a continuous-wave laser-induced forward transfer (CW-LIFT) system that possesses high printing quality with a high printing success rate. CW-LIFT can automatically deposit droplets equally and uniformly as a customized pattern. In this study, we selected an 830 nm near-infrared CW laser and applied a 20× microscope objective lens to highly focus the laser beam. In addition, a 16 nm gold thin film was used as the energy-absorbing layer for CW-LIFT. We demonstrated that the CW-LIFT can print liquid bioink and deposit cells in a controlled and precise way.
关键词： bioink,continuous-wave laser-induced forward transfer,laser printing,CW-LIFT,cell deposition
更新于2025-09-11 14:15:04