This is our latest selection of worldwide publications and patents in english on Optics, between many scientific online journals, classified and focused on optics, diffraction, optical resolution, polarisation, laser, Kapitsa–Dirac, optical instrument and photon.
Monolithically Integrated GaAs Nanoislands on CMOS-Compatible Si Nanotips Using GS-MBE
Published on 2025-07-12 by Adriana Rodrigues, Anagha Kamath, Hannah-Sophie Illner, Navid Kafi, Oliver Skibitzki, Martin Schmidbauer, Fariba Hatami @MDPI
Abstract: The monolithic integration of III-V semiconductors with silicon (Si) is a critical step toward advancing optoelectronic and photonic devices. In this work, we present GaAs nanoheteroepitaxy (NHE) on Si nanotips using gas-source molecular beam epitaxy (GS-MBE). We discuss the selective growth of fully relaxed GaAs nanoislands on complementary metal oxide semiconductor (CMOS)-compatible Si(001) nanotip wafers. Nanotip wafers were fabricated using a state-of-the-art 0.13 μm SiGe Bipolar [...]
Our summary: Monolithic integration of GaAs nanoislands on Si nanotips using GS-MBE enables advancement of optoelectronic devices. Selective growth of fully relaxed GaAs islands on CMOS-compatible Si(001) nanotip wafers. Investigation focuses on growth conditions influence on morphology, crystalline structure, and defect formation.
GaAs, Nanoislands, GS-MBE, CMOS-compatible
Publication
Hybrid silicon quantum dot lasers (hsqdl) with reduced thermal resistance
Patent published on the 2025-07-03 in WO under Ref WO2025144532 by INTEL CORP [US] (Huang Duanni [us], Su Guan-lin [us], Mehta Karan [us], Yerkes Shane [us], Dehghannasiri Razi [us], Dobek Stanley [us], Cramer Marcus [us], Frish Harel [us], Rong Haisheng [us])
Abstract: Hybrid silicon quantum dot laser (HSQDL) structure including an optical waveguide of a first width, a mesa of a second width and a current channel of a third width that is smaller than the second width. In some examples, the third width is only slightly larger than the first width to narrowly confine electrical current directly over the optical waveguide while the third width is significantly larger than the first width to efficiently transport heat away from the optical gain medium. While the c[...]
Our summary: Hybrid silicon quantum dot lasers with reduced thermal resistance have a structure that includes an optical waveguide, mesa, and current channel of varying widths to confine electrical current and efficiently transport heat away from the optical gain medium. Implant processes may be used to increase electrical resistivity in certain regions.
quantum dot lasers, silicon, reduced thermal resistance, optical waveguide
Patent
Carbonaceous material with controlled true density, negative electrode for power storage device, and power storage device
Patent published on the 2025-07-03 in WO under Ref WO2025142598 by KURARAY CO LTD [JP] (Nishimura Naohiro [jp], Hattori Yusaku [jp])
Abstract: The present invention pertains to a carbonaceous material in which: the half-width value of a peak near 1360 cm-1 of a Raman spectrum observed by laser Raman spectroscopy is 200-280 cm-1; the true density obtained by a helium method is 1.30-1.95 g/cc; and the nitrogen element content determined by elemental analysis is 0.5-4.6 mass%.[...]
Our summary: Carbonaceous material with controlled true density, negative electrode for power storage device, and power storage device. The present invention pertains to a carbonaceous material in which: the half-width value of a peak near 1360 cm-1 of a Raman spectrum observed by laser Raman spectroscopy is 200-280 cm-1; the true density obtained by a helium method is 1.30-1.95 g/cc; and the nitrogen element content determined by elemental analysis is 0.5-4.6 mass%.
carbonaceous material, true density, negative electrode, power storage device
Patent
Molybdenum-containing carbonaceous material, negative electrode for power storage device, and power storage device
Patent published on the 2025-07-03 in WO under Ref WO2025142600 by KURARAY CO LTD [JP] (Nishimura Naohiro [jp], Hattori Yusaku [jp])
Abstract: The present invention relates to a carbonaceous material for which the value of the half-value width of the peak in the vicinity of 1360 cm-1 in the Raman spectrum observed by laser Raman spectroscopy is 200-280 cm-1, and for which the molybdenum element content as determined by ICP emission spectroscopy is 0.5-7.5 mass%.[...]
Our summary: Molybdenum-containing carbonaceous material with specific Raman spectrum peak width and molybdenum content for negative electrode in power storage device.
molybdenum, carbonaceous material, negative electrode, power storage device
Patent
Conjugated inter-polyelectrolyte complexes with exciton transfer
Patent published on the 2025-06-26 in WO under Ref WO2025136964 by RICHARDS RACHEL [US] (Ayzner Alexander [us], Richards Rachel [us])
Abstract: Presented are conjugated polyelectrolyte complexes including an electronic energy transfer acceptor conjugated polyelectrolyte polymer and an electronic energy transfer donor conjugated polyelectrolyte copolymer. The electronic energy transfer acceptor conjugated polyelectrolyte polymer and the electronic energy transfer donor conjugated polyelectrolyte copolymer can be oppositely charged. The conjugated polyelectrolyte complexes can be applied to convert photon energy into another form of energ[...]
Our summary: Conjugated inter-polyelectrolyte complexes with exciton transfer, including an energy transfer acceptor and donor polyelectrolyte polymer, can convert photon energy into another form of energy.
polyelectrolyte, complexes, exciton transfer, energy transfer
Patent
Distributed displacement sensing phase demodulation method and apparatus, and device
Patent published on the 2025-06-12 in WO under Ref WO2025118713 by BGP INC CHINA NAT PETROLEUM CORPORATION [CN] (Li Yanpeng [cn], Zhang Shaohua [cn])
Abstract: A distributed displacement sensing phase demodulation method, comprising: determining an IQ demodulation initial phase and an IQ signal amplitude on the basis of an IQ signal (S101); performing a phase decoupling operation on the IQ demodulation initial phase, and sequentially subtracting from the IQ demodulation initial phase an initial phase of an optical fiber sensing signal sensing position, an initial phase of a laser pulse source and an accumulated phase along paths in a transmission proce[...]
Our summary: Distributed displacement sensing phase demodulation method, including determining IQ demodulation initial phase and signal amplitude, performing phase decoupling operation, unwinding processing, calculating displacement sensing data, eliminating coherent fading noise, and transposing data for final phase-demodulated displacement sensing data.
phase demodulation, displacement sensing, coherent fading, IQ demodulation
Patent
Design Guide for Hybrid-Additive Manufacturing of Inconel 718 Combining PBF-LB/M and In Situ High-Speed Milling
Published on 2025-03-10 by David Sommer, Simon Hornung, Cemal Esen, Ralf Hellmann @MDPI
Abstract: As the correlation between design rules and process limitations is of the upmost importance for the full exploitation of any manufacturing technology, we report a design guide for hybrid-additive manufacturing of Inconel 718. Basic limitations need to be evaluated for this particular hybrid approach that combines laser powder bed fusion (PBF-LB/M) and in situ high-speed milling. Fundamental geometric limitations are examined with regard to the minimum feasible wall thickness, cylinders, overhang[...]
Our summary: Design guide for hybrid-additive manufacturing of Inconel 718 combining PBF-LB/M and in situ high-speed milling, Examination of geometric limitations, Derivation of design guidelines for reliable build process
hybrid-additive manufacturing, Inconel 718, PBF-LB/M, high-speed milling
Publication
From Real Vegetation to Its Tactile Simulation
Published on 2025-03-10 by Alessandro Martinelli, Davide Fabiocchi, Francesca Picchio, Hermes Giberti, Marco Carnevale @MDPI
Abstract: The exploitation of immersive simulation platforms to improve traditional training techniques in the agricultural industry sector would enable year-round accessibility, flexibility, safety, and consistent high-quality training for agricultural operators. An innovative workflow in virtual simulations for training and educational purposes includes an immersive environment in which the operator can interact with plants through haptic interfaces, following instructions imparted by a non-playing char[...]
Our summary: Exploiting immersive simulation platforms for realistic training in agriculture through haptic interfaces and high-fidelity virtual simulations. Creating a multisensorial environment for operators to interact with plants in a realistic and immersive training environment. Finalizing a product as a realistic training platform for pruning, with potential for other operations and specializations.
immersive simulation, haptic interfaces, virtual simulations, multisensorial environment
Publication
