Refine
Year of publication
- 2019 (94) (remove)
Document Type
- Conference Proceeding (48)
- Article (23)
- Part of a Book (12)
- Book (7)
- Doctoral Thesis (1)
- Other (1)
- Periodical (1)
- Part of Periodical (1)
Institute
- Forschungszentrum Mikrotechnik (28)
- Forschungszentrum Business Informatics (17)
- Wirtschaft (13)
- Soziales & Gesundheit (12)
- Technik | Engineering & Technology (9)
- Forschungszentrum Energie (8)
- Forschungszentrum Human Centred Technologies (8)
- Department of Computer Science (Ende 2021 aufgelöst; Integration in die übergeordnete OE Technik) (6)
- Didaktik (mit 31.03.2021 aufgelöst; Integration ins TELL Center) (5)
- Department of Engineering (Ende 2021 aufgelöst; Integration in die übergeordnete OE Technik) (3)
Is part of the Bibliography
- yes (94) (remove)
Keywords
- Constrained Optimization (3)
- silicon nitride (3)
- AAL (2)
- Evolution Strategies (2)
- Reflexive Kommunikationsprozesse (2)
- Theoretical Analysis (2)
- conically constrained problem (2)
- constrained optimization (2)
- integrated photonics (2)
- repair by projection (2)
- AWG design (1)
- Ablation efficiency (1)
- Active matrix adaptation evolution strategy (1)
- Altern (1)
- Altern in häuslicher Umgebung (1)
- Arrayed waveguide gratings (1)
- Augmented Reality (1)
- Beginn des 20. Jahrhunderts (1)
- Benchmarking (1)
- Beobachtung (1)
- Besuchskontakte (1)
- Betreutes Wohnen (1)
- Beziehungsgestaltung (1)
- Biodegradable polymers (1)
- Black-box Optimization (1)
- Black-box optimization benchmarking (1)
- Blockchain (1)
- Burst mode (1)
- CMOS-Compatible (1)
- Clathrate Hydrates (1)
- Cloud (1)
- Constrained optimization (1)
- Constraint Handling (1)
- Copper (1)
- Creativity (1)
- Customs (1)
- Death (1)
- Demand Side Management (1)
- Demand side management (1)
- Design Thinking (1)
- Digital Business Ecosystems (1)
- Digital Ecosystems (1)
- Digitalization (1)
- Disregard (1)
- Diversity (1)
- Einheit der Differenz (1)
- Einverständnis (1)
- Electric potential (1)
- Electric vehicles (1)
- Electrodes (1)
- Elektromobilität (1)
- Evolution strategies (1)
- Evolution strategy (1)
- Evolutionary Algorithms (1)
- Fingers (1)
- Forschung (1)
- Frame Work Analysis (1)
- Geruch (1)
- Gold (1)
- Greenfield Approach (1)
- Hochschulbibliothek (1)
- IDA (1)
- Industrial Internet of Things (1)
- Industry (1)
- Industry 4.0 (1)
- Influence (1)
- Informationskompetenz (1)
- Informationstechnologie (1)
- Kalkül (1)
- Laser ablation (1)
- Lastmanagement (1)
- Leadership (1)
- Lebensdauermodellierung (1)
- Lernende Organisationen (1)
- Licht (1)
- Light (1)
- Literaturrecherche (1)
- Loss (1)
- MMI splitter (1)
- Machine Learning (1)
- Management (1)
- Methoden (1)
- Migration (1)
- Mindsets (1)
- Mobile Learning (1)
- Monitoring (1)
- Nationalsozialismus (1)
- OCT (1)
- OCT on-chip (1)
- Optimum charging strategy (1)
- Patient compliance (1)
- Patient participation (1)
- Peak demand (1)
- Peripheral arterial disease (1)
- Pflegeeltern (1)
- Pflegefamilie (1)
- Pflegekind (1)
- Primary health care (1)
- Protocols (1)
- Prozesssteuerung (1)
- Psychology (1)
- Reflexive Kommunikation (1)
- Regressionsanalyse (1)
- Roboter (1)
- Rotated Klee-Minty Problem (1)
- Scent (1)
- Schall (1)
- Schreibkompetenz (1)
- Schreibphasen (1)
- Schreibzentrum (1)
- Sensitivity (1)
- Sensor (1)
- Si3N4 based AWG spectrometer (1)
- SiN Photonics (1)
- Silicon (1)
- Social Justice (1)
- Social Work (1)
- Sound (1)
- Soziale Arbeit (1)
- Soziale Arbeit, Verlust, Tod, Lebensspanne, Studium, Praxis (1)
- Sozialgeschichte (1)
- Stationäre Batteriespeicher (1)
- Steel (1)
- Supply Chain Management (1)
- Teilnehmenden-Kreis (1)
- Telemedicine (1)
- Themenbearbeitung (1)
- Tod (1)
- Touch (1)
- Ultraschall (1)
- Ultrashort pulses microfabrication (1)
- Ultrasound (1)
- Unidirectional communication (1)
- Usability (1)
- Verantwortung (1)
- Verlust (1)
- WING, Wirtschaftsingenieurwesen (1)
- Warmwasserspeicher (1)
- Wirklichkeiten (1)
- Y-branch (1)
- Y-branch splitter (1)
- Zeitrahmen (1)
- Zuverlässigkeitsanalyse (1)
- algorithm selection (1)
- arrayed waveguide grating (1)
- arrayed waveguide gratings (1)
- autoethnography (1)
- bebaute Umwelt (1)
- carbon (1)
- concept (1)
- constraint handling (1)
- cumulative step size adaptation (1)
- design and simulation (1)
- elderly (1)
- electrochemical biosensor (1)
- engineering design (1)
- friction (1)
- high-dimensional search space (1)
- high-index contrast AWG (1)
- human centered design (1)
- information and communication technology (1)
- intermediate recombination (1)
- laser microtexturing (1)
- lift-off free (1)
- meta-evolution strategy (1)
- motivation stategy (1)
- nanogap (1)
- optical coherence tomography (1)
- optical communication systems (1)
- optical datatransmissison (1)
- optical splitters (1)
- optimization (1)
- packaging (1)
- photonics (1)
- photonics integrated circuit (1)
- photonics integrated circuits (1)
- physical activity (1)
- politischer Katholizismus (1)
- power splitter (1)
- redox cycling (1)
- reflective writing (1)
- reflexive Kommunikation (1)
- rib waveguide (1)
- rib waveguides (1)
- ridge waveguide (1)
- ridge waveguides (1)
- risk management (1)
- simulation-based optimization (1)
- social work (1)
- stress-testing (1)
- surface characterization (1)
- technology prototypes (1)
- theoretical analysis (1)
- tribological characterization (1)
- ultra-short pulsed laser (1)
- wear (1)
- Österreich (1)
Selbst sicher sein
(2019)
Transparent laser-structured glasses with superhydrophilic properties for anti-fogging applications
(2019)
Ultrashort pulse laser structuring enables direct modification of glass surfaces to generate superhydrophilic properties for anti-fogging applications. This approach makes coatings dispensable and the generated surfaces remain thermally, mechanically, and chemically resistant. However, the laser-generated structures usually cause scattering, which decreases transmission and may disturb the vision through the modified glass in the dry state. The aim of this study was to find a laser-processing strategy to achieve superhydrophilic, anti-fogging properties on glass surfaces with maximum transmission and minimal visual perception of the generated structure. For this purpose, we used an ultrashort-pulsed laser to generate periodic patterns of rippled circles or rough holes with varying pitch. The water contact angle and transmission of the structured glasses were measured as a function of the structured area. It was found that a periodic pattern of holes, which covers less than 1% of the surface, is already sufficient to reach the superhydrophilic state (contact angle < 5°) and provides nearly the same transmission as pristine glass. Pictures of objects imaged through dry, structured glasses, which were placed close to the lens or object, showed in both cases only a minimal decrease of contrast. If this minor drawback can be accepted, this direct laser structuring approach could be an interesting alternative to coating-based techniques and leaves even room to apply additional coatings for the fabrication of multi-functional special glasses.
In this study, we carried out the structural and thermal characterization of a medical-grade poly (lactide) (PLA) by SEC, TGA, DSC, NMR, ICP-MS and Py-GC/MS. Moreover, we investigated the laser-induced degradation occurring when ultrashort laser pulses (ULP) were employed to cut extremely thin polymer films prepared by solvent-casting. ULP polymer cutting technology is an interesting manufacturing process for its advantages in potential medical applications. In fact, heat transmission to the region surrounding the cuts is limited, so that the incisions are precise and the effects on the regions around them are small. In this way, the need for post-processing is reduced and ULP cutting becomes interesting for industrial applications. However, degradation induced by ULP may occur and compromise the properties of the polymer samples. To investigate this possibility, portions of PLA films, ultrashort laser cut (ULC) and uncut, were analysed by SEC, DSC, NMR and FTIR. Furthermore, PLA oligomers were studied by ESI-MS. Both SEC and NMR showed a decrease in the molecular weight. FTIR, ESI-MS and NMR spectra revealed the presence of olefin end groups originated from a \beta-H transfer mechanism, induced by heat and/or light (Norrish II mechanism). Additionally, the inspection of the ESI mass spectra highlighted the cleavage of ester bonds related to the Norrish I type mechanism, undetected by the other techniques.
Progress in integrated photonics enables development of integrated photonics circuits with new unique properties, circuits of the future, and overcomes current limits in information and communication technologies. The packaging of photonic integrated circuits is necessary for taking them out of research laboratories into real implementation in the information and communication technology applications.
Telecom optical fibers are still being the best transmission medium of digital data and analogue signals for long distance applications. The effective coupling of optical radiation between telecom optical fiber with ten microns core dimension and photonic integrated circuits optical waveguides with submicron dimensions are necessary. To address these challenges, we present our concept of photonics integrated circuit packaging with radio frequency, direct current and fiber array ports with automated active alignment system.
SiN is a suitable material for fabricating of photonic integrated circuits with middle refractive index contrast for the visible and near infrared spectral region with ultra-low propagation losses. The paper deals with the design and simulation of fiber to SiN chip butt coupler with single step fabrication process without thickness tapering. Coupler is designed for 850 nm band for coupling between strip 0.25 μm × 1.00 μm waveguide and Nufern's 780-OCT single mode optical fiber with core diameter 4.4 μm. The coupling losses simulation results of the two simulation methods finite-difference beam propagation techniques and eigenmode expansion method are compared.