Journal: Advanced optical materials

Article Title: Plasmonic dielectric antennas for hybrid optical nanotweezing and optothermoelectric manipulation of single nanosized extracellular vesicles

doi: 10.1002/adom.202302603

Figure Lengend Snippet: (a) is the schematic illustration of the HAT system being able to trap, transport, and dynamically manipulate a single EV. (b) is the simulated in-plane electric field enhancement at the middle of the silicon disk, where the polarization is oriented along the x direction. (c) is the simulated out-of-plane field enhancement crossing the very center of the disk. Light is propagating along the opposite-z direction. (d) and (e) numerically calculated optical trapping potential given the electric field distributed at (b) and (c) under 7.2 mW/μm 2 laser illumination, respectively. The particle is assumed to be a 50 nm diameter EV (n=1.4). The illumination wavelength is 973 nm in (b) to (e), which is the same as what we used in the experiments.

Article Snippet: The anapole nanoantennas were excited by a 973 nm wavelength diode laser (Thorlabs CLD1015).

Techniques:

Journal: Advanced optical materials

Article Title: Plasmonic dielectric antennas for hybrid optical nanotweezing and optothermoelectric manipulation of single nanosized extracellular vesicles

doi: 10.1002/adom.202302603

Figure Lengend Snippet: (a) is the SEM image of the fabricated anapole nanoantenna with ~30 nm tip-to-tip distance of the DNH slot. (b) depicts the simulated scattering cross section (orange dashed line) normalized to its maximum value and simulated field enhancement (red curve) monitored from the very center of the DNH slot. The blue curve represents the measured scattering cross-section (normalized to its maximum value) from a homemade dark field setup (shown in Fig. S7 ). The simulation result matches well with the experimental measurements. The grey dashed line marks 973 nm trapping laser wavelength. (c) is the sequence of frames showing the diffusing, trapping, and releasing of a single EV suspended in DI water on the anapole nanoantenna. The blue dotted circle depicts the periphery of the silicon disk under the microscope, and the bright spot pointed by the white arrow is the fluorescence-labelled EV. The laser was focused onto the anapole nanoantenna for the first three frames through a water-immersed 60× objective lens with N.A.=1.2. (d) shows the scatter plot of the trapped EV positions under various laser intensities. As expected, higher laser power confines the trapped EV within a smaller area.

Article Snippet: The anapole nanoantennas were excited by a 973 nm wavelength diode laser (Thorlabs CLD1015).

Techniques: Sequencing, Microscopy, Fluorescence

Journal: Optics Express

Article Title: Quantum random number generation based on phase reconstruction

doi: 10.1364/oe.515390

Figure Lengend Snippet: Fig. 6. Experimental setup of the phase-reconstruction QRNG. A stable continuous wave is emitted by a laser driven by a temperature controller (TC), divided into two paths by a BS and a delay line, and input into an optical hybrid (OH) to generate four orthogonal states. These states are then detected by two BHDs and signal acquisition and 10-bit quantization is performed using an oscilloscope (OSC).

Article Snippet: And the laser diode is driven by a compact laser diode controller (Thorlabs CLD1015) to stabilize its power and wavelength in real time.

Techniques: