A5004401932- Metamaterials and Metasurfaces Applications
- Orbital Angular Momentum in Optics
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Advanced Fluorescence Microscopy Techniques
- Polydiacetylene-based materials and applications
- Luminescence and Fluorescent Materials
- Photoacoustic and Ultrasonic Imaging
- Mechanical and Optical Resonators
- Advanced Fiber Laser Technologies
- Photochromic and Fluorescence Chemistry
- Neural Networks and Reservoir Computing
- Optical Polarization and Ellipsometry
University of California, Berkeley
2021-2023
Superlenses made of plasmonic materials and metamaterials can image features at the subdiffraction scale. However, intrinsic losses impose a serious restriction on imaging resolution, problem that has hindered widespread applications superlenses. Optical waves complex frequency exhibit temporally attenuating behavior have been proposed to offset in superlenses through introduction virtual gain, but experimental realization lacking because difficulty measurements with temporal decay. In this...
Abstract The dynamics of photons in fluorescent molecules plays a key role fluorescence imaging, optical sensing, organic photovoltaics, and displays. Photobleaching is an irreversible photodegradation process fluorophores, representing fundamental limitation relevant applications. Chemical reagents are used to suppress the photobleaching rate but with exceptionally high specificity for each type fluorophore. Here, using hyperbolic materials (OHMs), platform achieve unprecedented fluorophore...
Resolution capability of the linear structured illumination microscopy (SIM) plays a key role in its applications physics, medicine, biology, and life science. Many advanced methodologies have been developed to extend resolution by using subdiffraction-limited optical excitation patterns. However, obtaining SIM images with beyond 40 nm at visible frequency remains as an insurmountable obstacle due intrinsic limitation spatial bandwidth involved materials complexity system. Here, low-loss...
Metamaterial-assisted illumination nanoscopy (MAIN) has been proven to be a promising approach for super-resolution microscopy with up 7-fold improvement in imaging resolution. Further resolution enhancement is possible principle, however, not yet demonstrated due the lack of high-quality ultrathin layered hyperbolic metamaterials (HMMs) used MAIN. Here, we fabricate low-loss composite HMM consisting bilayers Al-doped Ag and MgO nominal thickness 2.5 nm, then use it demonstrate an...
Plasmonic lithography breaks the diffraction limit by utilizing otherwise lost evanescent fields produced light sources with wavelengths close to or within visible spectrum. With lower cost of high-power femtosecond laser systems, plasmonic opens a new approach towards next generation semiconductor manufacturing. In past years, we have demonstrated different types lithography, ranging from Superlens, Flying lens, Hyperlens, and successfully achieved 22nm half-pitch resolution. made...
Organic Hyperbolic Materials In article number 2102230, Yeon Ui Lee, Zhaowei Liu, and co-workers develop a structured illumination microscopy technique by using low loss natural organic hyperbolic material (OHM). This OHM can support record high spatial-frequency with an effective refractive index larger than 50 at visible frequencies. OHMs based speckle demonstrates imaging resolution 30 nm scales enhanced fluorophore photostability, biocompatibility, easy to use, cost.
Superlenses made of plasmonic materials and metamaterials have been exploited to image features sub-diffractional scale. However, their intrinsic losses impose a serious restriction on the imaging resolution, which is long-standing problem that has hindered wide-spread applications superlenses. Optical waves complex frequency exhibiting temporally attenuating behavior proposed offset in superlenses via virtual gain, but experimental realization missing due challenge involved preparing...
The two-dimensional designer metasurfaces have been established as a new class of versatile and powerful optical solution for controlling the classical light in various degrees freedom such phase, amplitudes, polarization angular momentum. Expanding control capability metasurface from to quantum state single photons is an emerging direction that can lead regime light-matter interaction applications technology. In this talk, we will present our proposal experimental demonstration manipulating...