GLORIA

GEOMAR Library Ocean Research Information Access

X

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • AIP Publishing  (11)
  • 2020-2024  (11)
Materialart
Verlag/Herausgeber
  • AIP Publishing  (11)
Person/Organisation
Sprache
Erscheinungszeitraum
  • 2020-2024  (11)
Jahr
FID
Fachgebiete(RVK)
  • 1
    Online-Ressource
    Online-Ressource
    Passivating violet phosphorus against ambient degradation for highly sensitive and long-term stable optoelectronic devices
    AIP Publishing ; 2023
    In:  Applied Physics Letters Vol. 122, No. 18 ( 2023-05-01)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 122, No. 18 ( 2023-05-01)
    Kurzfassung: Recent success in exfoliating violet or Hittorf's phosphorus down to monolayer reignites the research passion in this ancient yet mysterious material, questing for superior electronic and optoelectronic functionalities. Unfortunately, the poor air stability that plagues black phosphorus also exists in the violet counterpart. Aiming to provide more insight into the degradation chemistry and accordingly find a facile solution for it, herein, we employ concerted elemental, chemical and vibrational spectroscopies to reveal the critical role of oxygen and water in the degradation mechanism and pathway of violet phosphorus in ambient condition. Thereafter, a simple passivation approach by oxide encapsulation is demonstrated to realize air-stable violet phosphorus photodetector device. As the proof-of-concept, the photodetector fabricated accordingly shows superior figures of merit with ultralow dark current ( & lt; 10−13 A), high low-light responsivity (6 A W−1) and fast response time ( & lt; 10 ms) in the ultraviolet to visible spectrum, as well as great chemical robustness against harsh environments.
    Materialart: Online-Ressource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/5.0149368
    RVK:
    UA 1000
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2023
    ZDB Id: 211245-0
    ZDB Id: 1469436-0
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 2
    Online-Ressource
    Online-Ressource
    Modeling of arc in convective shock wave composite system and analysis of its plasma running characteristics
    AIP Publishing ; 2021
    In:  AIP Advances Vol. 11, No. 12 ( 2021-12-01)
    Details
    In: AIP Advances, AIP Publishing, Vol. 11, No. 12 ( 2021-12-01)
    Kurzfassung: The plasma arc caused by lightning overvoltage can significantly degrade the power grid reliability. Thus, it is essential to design an efficient arc extinguishing system. The modeling and analysis of the plasma arc in an arc extinguishing system can provide an essential theoretical basis for improving and optimizing its structure. However, the precision of the governing equation and boundary value of the plasma arc model chosen in previous studies can be entirely different from the corresponding practical values. This study develops an arc extinguishing system named “convective shock wave complex system.” In order to further optimize its structure and achieve a better arc extinguishing effect, an appropriate model is established to analyze the plasma’s operation characteristics inside the arc extinguishing device while stroking by lightning. Based on the magnetohydrodynamics theory, the COMSOL software is utilized to analyze the temperature of the plasma arc, the flow rate of gas in the cavity, and the conductivity and current density of some monitoring points to comprehensively analyze the plasma’s physical characteristics in the system. Finally, a virtual lightning experiment is utilized to evaluate the simulation results.
    Materialart: Online-Ressource
    ISSN: 2158-3226
    URL: Article
    DOI: 10.1063/5.0063815
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2021
    ZDB Id: 2583909-3
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 3
    Online-Ressource
    Online-Ressource
    A new method for detecting surface defects on curved reflective optics using normalized reflectivity
    AIP Publishing ; 2020
    In:  Review of Scientific Instruments Vol. 91, No. 3 ( 2020-03-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 91, No. 3 ( 2020-03-01)
    Kurzfassung: Detection of surface defects is critical in quality control of reflective optics. In this note, we propose a new surface defect detection method for reflective optics using the normalized reflectivity, which is calculated from the signal intensity of a chromatic confocal surface profiler. This detection method first scans the surface to acquire signal intensity data and then models the intensity data to calculate the normalized local reflectivity map. The reflectivity map is further processed by threshold segmentation to extract defects from normal areas. Measurement experiments on an Al-coated concave reflector with artificial defects were carried out to demonstrate the feasibility of the method. This detection method can provide existing optical surface profilers with defect detecting capabilities without extra equipment.
    Materialart: Online-Ressource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/1.5100851
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2020
    ZDB Id: 209865-9
    ZDB Id: 1472905-2
    SSG: 11
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 4
    Online-Ressource
    Online-Ressource
    Experimental and numerical study of liquid film by jet impingement: Based on contact angle model
    AIP Publishing ; 2023
    In:  Physics of Fluids Vol. 35, No. 8 ( 2023-08-01)
    Details
    In: Physics of Fluids, AIP Publishing, Vol. 35, No. 8 ( 2023-08-01)
    Kurzfassung: Liquid film by jet impingement is widely applied in aerospace, steel quenching, ink-jet printing, and cleaning. In this paper, simulations with the modified contact angle model were used to describe the characteristics of the liquid film. Based on the Hoffman's law and the Tanner's correlation, the contact angle model was constructed and further nested within the Coupled Level Set and Volume of Fluid model. The model determined the movement direction of contact line according to the inner product of the normal vector at the phase interface and the lateral velocity in the cell and then outputted the value of the contact angle. Results showed that the advancing and the receding contact angles of droplet were inappropriate for the simulation of the liquid film. The size of the liquid film obtained by the static contact angle largely depended on the selection of contact angle values. Instead, the modified contact angle model provided an accurate prediction on the morphology and the size of the liquid film.
    Materialart: Online-Ressource
    ISSN: 1070-6631 , 1089-7666
    URL: Article
    DOI: 10.1063/5.0156214
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2023
    ZDB Id: 1472743-2
    ZDB Id: 241528-8
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 5
    Online-Ressource
    Online-Ressource
    Investigation of dual-band perfect absorption and their hybridization on multilayer tungsten disulfide (WS2) gratings
    AIP Publishing ; 2022
    In:  Journal of Applied Physics Vol. 131, No. 4 ( 2022-01-31)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 131, No. 4 ( 2022-01-31)
    Kurzfassung: We investigate the dual-band perfect absorption and their hybridization on multilayer tungsten disulfide (WS2) gratings with metallic substrates by the finite-difference time-domain method and the coupled-mode theory. Numerical results suggest that, under the illumination of the transverse magnetic polarized plane wave, the special multilayer WS2 grating with high refractive index not only allows the circulating-current-drove magnetic resonance but also provides additional wavevectors to excite the plasmonic resonance on the substrate surface simultaneously. Consequently, the dual-band perfect absorption is obtained in the single-port system by two independent critical coupling. The effect of small changes in the grating period, width, and height on spectral positions of absorption peaks is presented. The inherent multiple dielectric resonances on the WS2 grating under the illumination of the transverse electric polarized plane wave are also demonstrated. Intriguingly, the simultaneous existence of angle-independent magnetic resonances and angle-dependent plasmonic resonances gives rise to the obvious hybridization between the two types of resonances under the oblique incidence. Numerical results are in excellent agreement with theoretical calculations. The structure under study undoubtedly opens perspectives for enhancing light–matter interactions in two-dimensional materials.
    Materialart: Online-Ressource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/5.0075709
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2022
    ZDB Id: 220641-9
    ZDB Id: 3112-4
    ZDB Id: 1476463-5
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 6
    Online-Ressource
    Online-Ressource
    Retraction: “3D printing of multi-metallic microstructures by meniscus-confined electrodeposition” [Rev. Sci. Instrum. 93, 025102 (2022)]
    AIP Publishing ; 2023
    In:  Review of Scientific Instruments Vol. 94, No. 3 ( 2023-03-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 94, No. 3 ( 2023-03-01)
    Materialart: Online-Ressource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0148439
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2023
    ZDB Id: 209865-9
    ZDB Id: 1472905-2
    SSG: 11
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 7
    Online-Ressource
    Online-Ressource
    All-optical laser-ultrasonic technology for width and depth gauging of rectangular surface-breaking defects
    AIP Publishing ; 2021
    In:  Review of Scientific Instruments Vol. 92, No. 5 ( 2021-05-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 92, No. 5 ( 2021-05-01)
    Kurzfassung: In this paper, the width and depth of rectangular surface-breaking defects were successfully gauged using an all-optical laser-ultrasonic system. The finite element method was used to simulate propagating paths of defect-induced reflected and transmitted Rayleigh waves. It is observed that most Rayleigh waves with wavelengths less than the depth of the defect are reflected by the defect. A small part of the Rayleigh waves with wavelengths greater than the depth of the defect directly transmits through the bottom edge of the defect without acting on the left edge of the defect. Based on the simulation results, a three-step detection method of width and depth gauging of rectangular surface-breaking defects is proposed. In the first step, the pulsed laser and detection laser are irradiated on one side of the defect. In the second step, the sample is moved to a certain distance to ensure that both lasers reach the other side of the defect. In the third step, two lasers are irradiated on both sides of the defect. The width and depth of the defect are calculated according to the arrival time of the incident, reflected, and transmitted Rayleigh waves, as well as the movement distance of the sample. Experimental results are consistent with the reference-results measured by using a digital microscope. The proposed three-step detection method is proved to be feasible in simultaneous measurement of the width and depth of rectangular surface-breaking defects. Furthermore, it may be potentially useful for measuring other types of defect structures.
    Materialart: Online-Ressource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0026174
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2021
    ZDB Id: 209865-9
    ZDB Id: 1472905-2
    SSG: 11
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 8
    Online-Ressource
    Online-Ressource
    3D printing of multi-metallic microstructures by meniscus-confined electrodeposition
    AIP Publishing ; 2022
    In:  Review of Scientific Instruments Vol. 93, No. 2 ( 2022-02-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 93, No. 2 ( 2022-02-01)
    Kurzfassung: We studied a multi-metallic microscale 3D printing based on the meniscus-confined electrodeposition (MCED). The composition of Cu/Pt alloys can be controlled by applying different bias voltages to the CuSO4/H2PtCl4 mixed solution in MCED. We find that a double-barrel system had higher Cu/Pt alloy purity (maximum 100% Cu or maximum 80% Pt) than a single-barrel system. A Λ-shaped microstructure was printed to verify the capability to multi-metal microstructures in a single printing process. The authors of the article agree to the retraction of the article effective 21 March 2023.
    Materialart: Online-Ressource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0076677
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2022
    ZDB Id: 209865-9
    ZDB Id: 1472905-2
    SSG: 11
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 9
    Online-Ressource
    Online-Ressource
    Numerical investigation on the interaction of an oscillating bubble with the interface of a non-Newtonian fluid
    AIP Publishing ; 2023
    In:  Physics of Fluids Vol. 35, No. 8 ( 2023-08-01)
    Details
    In: Physics of Fluids, AIP Publishing, Vol. 35, No. 8 ( 2023-08-01)
    Kurzfassung: The dynamics of an oscillating bubble near a liquid–liquid interface is a complex multiphase flow problem due to the highly nonlinear interaction, such as interface fragmentation and bubble tearing. When one of the liquid mediums is non-Newtonian, its constitution would significantly influence both the bubble motion and the interface evolution. In this study, a numerical model is established based on the Eulerian finite element method with the non-Newtonian fluid described by the Herschel–Bulkley model. The numerical model is validated by comparing with experimental results for a non-spherical pulsating bubble at a water–oil interface and the analytical solution for the laminar flow of non-Newtonian fluids in a circular tube. According to the simulation and analysis with different case parameters, our findings suggest that the non-Newtonian fluid forms a crater when squeezed by the bubble, and the downward jet can penetrate the bubble and further deepen the crater. As the distance parameter increases, the crater gradually disappears or even bulges. Furthermore, the yield shear stress can give non-Newtonian fluid plastic properties similar to a solid, effectively reducing the bubble's pulsation and jet load. Additionally, the flow behavior index n comes from the power-law model for non-Newtonian fluids and significantly impacts the jet's impact process. When n≤1, the crater is likelier to become funnel-shaped, whereas when n  & gt; 1, it is likelier to become bullet-head-shaped. In addition to enhancing the bubble's nonsphericity, the reduction in Reynolds number also weakens the crimp deformation of the interface. When the distance parameter is zero, the larger the buoyancy parameter and the less deformable the non-Newtonian fluid, the easier the bubble to split by the annular jet.
    Materialart: Online-Ressource
    ISSN: 1070-6631 , 1089-7666
    URL: Article
    DOI: 10.1063/5.0163431
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2023
    ZDB Id: 1472743-2
    ZDB Id: 241528-8
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 10
    Online-Ressource
    Online-Ressource
    Super-exchange and exchange-enhanced reactivity in Fe4S4-mediated activation of SAM by radical SAM enzymes
    AIP Publishing ; 2021
    In:  Chinese Journal of Chemical Physics Vol. 34, No. 5 ( 2021-10-01), p. 532-540
    Details
    In: Chinese Journal of Chemical Physics, AIP Publishing, Vol. 34, No. 5 ( 2021-10-01), p. 532-540
    Kurzfassung: [4Fe-4S]-dependent radical S-adenosylmethionine (SAM) proteins are a superfamily of oxidoreductases that can catalyze a series of challenging transformations using the common 5-dAdo radical intermediate. Although the structures and functions of radical SAM enzymes have been extensively studied, the electronic state-dependent reactions of the [4Fe-4S] clusters in these enzymes are still elusive. Herein we performed QM/MM calculations to elucidate the electronic state-dependent reactivity of the [4Fe-4S] cluster in pyruvate-formate lyase activating enzyme. Our calculations show that the electronic state-dependent SAM activation by the [4Fe-4S] clusters in radical SAM enzyme is determined by both the super-exchange and exchange-enhanced reactivities. The super-exchange coupling in the [4Fe-4S] cluster favors the antiferromagnetic coupling between two neighbouring pairs, which results in the α-electron rather than the β-electron donation from the [4Fe-4S] 1+ cluster toward the SAM activation. Meanwhile, in the most favorable electronic state for the reductive cleavage of S-C5′, Fe4 would donate its α-electron to gain the maximum exchange interactions in the Fe4-block. Such super-exchange and exchange-enhanced reactivity could be the general principles for reactivities of [4Fe-4S] cluster in RS enzymes.
    Materialart: Online-Ressource
    ISSN: 1674-0068 , 2327-2244
    URL: Article
    DOI: 10.1063/1674-0068/cjcp2108134
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2021
    ZDB Id: 2381472-X
    SSG: 6,25
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...