Generation of precision microstructures based on reconfigurable photoresponsive hydrogels for high-resolution polymer replication and microoptics [PDF]
Nature CommunicationsMicrostructured molds are essential for fabricating various components ranging from precision optics and microstructured surfaces to microfluidics. However, conventional fabrication technology such as photolithography requires expensive equipment and a ...
Pang Zhu +11 more
doaj +5 more sources
Fluidic microoptics with adjustable focusing and beam steering for single cell optogenetics. [PDF]
Opt Express, 2017 Electrically controlled micron-scale liquid lenses have been designed, fabricated and demonstrated, that provide both adjustable focusing and beam steering, with the goal of applying them to optogenetic in vivo mapping of brain activity with single cell ...
Berry S +5 more
europepmc +3 more sources
Lithography-Free Technology for the Preparation of Digital Microfluidic (DMF) Lab-Chips with Droplet Actuation by Optoelectrowetting (OEW) [PDF]
International Journal of Analytical Chemistry, 2022 Electrically conducting liquid droplets can be activated and moved by electrowetting-on-dielectric (EWOD) and optoelectrowetting (OEW). An important application is droplet manipulation in digital microfluidics (DMF, lab-on-a-chip 2.0) as a chip-sized ...
Christoph Doering +2 more
doaj +2 more sources
Doped or Quantum-Dot Layers as In Situ Etch-Stop Indicators for III/V Semiconductor Reactive Ion Etching (RIE) Using Reflectance Anisotropy Spectroscopy (RAS) [PDF]
Micromachines, 2021 Reflectance anisotropy spectroscopy (RAS), which was originally invented to monitor epitaxial growth, can—as we have previously shown—also be used to monitor the reactive ion etching of III/V semiconductor samples in situ and in real time, as long as the
Guilherme Sombrio +5 more
doaj +2 more sources
Optics Express, 2022 In this work, we propose the Fast Polarized Wave Propagation Method (FPWPM), which is an efficient method for vector wave optical simulations of microoptics.
Marco Wende +3 more
openalex +2 more sources
Light pattern generation with hybrid refractive microoptics under Gaussian beam illumination
, 2020 The generation of wide-angle diffraction patterns can be done in different ways using either thin diffractive optical elements with small features sizes or arrays of microoptics with large optical paths that are thick diffractive optical elements.
Maryam Yousefi +2 more
openalex +2 more sources
Diffractive microoptics in porous silicon oxide by grayscale lithography
Optics ExpressWe demonstrate focusing as well as imaging using diffractive microoptics, manufactured by two-photon polymerization grayscale lithography (2GL), that have been 3D printed into porous silicon oxide.
Leander Siegle +4 more
semanticscholar +4 more sources
Complex aspherical singlet and doublet microoptics by grayscale 3D printing
Optics Express, 2023 We demonstrate 3D printed aspherical singlet and doublet microoptical components by grayscale lithography and characterize and evaluate their excellent shape accuracy and optical performance.
Leander Siegle +2 more
openalex +2 more sources
Precise in situ etch depth control of multilayered III−V semiconductor samples with reflectance anisotropy spectroscopy (RAS) equipment [PDF]
Beilstein Journal of Nanotechnology, 2016 Reflectance anisotropy spectroscopy (RAS) equipment is applied to monitor dry-etch processes (here specifically reactive ion etching (RIE)) of monocrystalline multilayered III–V semiconductors in situ. The related accuracy of etch depth control is better
Ann-Kathrin Kleinschmidt +7 more
doaj +2 more sources