GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • AIP Publishing  (10)
  • 2015-2019  (10)
Material
Publisher
  • AIP Publishing  (10)
Person/Organisation
Language
Years
  • 2015-2019  (10)
Year
Subjects(RVK)
  • 1
    Online Resource
    Online Resource
    Optical gain from vertical Ge-on-Si resonant-cavity light emitting diodes with dual active regions
    AIP Publishing ; 2017
    In:  Applied Physics Letters Vol. 111, No. 11 ( 2017-09-11)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 111, No. 11 ( 2017-09-11)
    Abstract: Vertical resonant-cavity light emitting diodes with dual active regions consisting of highly n-doped Ge/GeSi multiple quantum wells (MQWs) and a Ge epilayer are proposed to improve the light emitting efficiency. The MQWs are designed to optically pump the underlying Ge epilayer under electric injection. Abundant excess carriers can be optically pumped into the Γ valley of the Ge epilayer apart from electric pumping. With the combination of a vertical cavity, the efficiency of the optical-pumping process was effectively improved due to the elongation of the optical length in the cavity. With the unique feature, optical gain from the Ge epilayer is observed between 1625 and 1700 nm at injection current densities of & gt;1.528 kA/cm2. The demonstration of optical gain from the Ge epilayer indicates that this strategy can be generally useful for Si-based light sources with indirect band materials.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4993652
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2017
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Strong electroluminescence from direct band and defects in Ge n+/p shallow junctions at room temperature
    AIP Publishing ; 2016
    In:  Applied Physics Letters Vol. 108, No. 19 ( 2016-05-09)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 108, No. 19 ( 2016-05-09)
    Abstract: Strong room temperature electroluminescence with two emission peaks at around 0.786 eV and 0.747 eV from Ge n+/p shallow junctions was reported. The peak at around 0.786 eV comes from direct band luminescence (DBL) in n + Ge regions, while the peak fixing at 0.747 eV is resulted from defects induced by ion implantation. Heavy n-type doping in Ge renders realization of strong defect-related luminescence (DRL) feasible. The peak intensity ratio of DRL/DBL decreases with increase of injection current since more electrons are filled in Γ valley. Above all, the Ge n+/p shallow junction is fully compatible with the source and drain in Ge metal-oxide-semiconductor field effect transistors.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4949532
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Guest Editorial: Special Topic on Coherent Raman Spectroscopy and Imaging
    AIP Publishing ; 2018
    In:  APL Photonics Vol. 3, No. 9 ( 2018-09-01)
    Details
    In: APL Photonics, AIP Publishing, Vol. 3, No. 9 ( 2018-09-01)
    Type of Medium: Online Resource
    ISSN: 2378-0967
    URL: Article
    DOI: 10.1063/1.5052267
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 2857268-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Polarization-resolved hyperspectral stimulated Raman scattering microscopy for label-free biomolecular imaging of the tooth
    AIP Publishing ; 2016
    In:  Applied Physics Letters Vol. 108, No. 3 ( 2016-01-18)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 108, No. 3 ( 2016-01-18)
    Abstract: We report the development and implementation of a rapid polarization-resolved hyperspectral stimulated Raman scattering (SRS) microscopy technique for label-free biomolecular imaging of the tooth. The hyperspectral SRS imaging technique developed covers both fingerprint (800–1800 cm−1) and high-wavenumber (2800–3600 cm−1) regions for tooth Raman imaging without fluorescence background interference with an imaging speed of & lt;0.3 s per frame of 512 × 512 pixels (∼1 μs per pixel), that is, & gt;106 faster than confocal Raman imaging. Significant differences of hyperspectral SRS spectra among different tooth locations (e.g., dentin, enamel, and dentin-enamel junction) are observed, revealing the biochemical distribution differences across the tooth. Further polarization-resolved SRS imaging shows different polarization dependences related to the molecular orientation differences of various tooth locations. This work demonstrates the potential of polarization-resolved hyperspectral SRS imaging technique developed in rapidly characterizing biochemical structures and compositions as well as biomolecule organizations/orientations of the tooth without labeling.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    URL: Article
    DOI: 10.1063/1.4939923
    DOI: 10.1063/1.4939923.1
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Quantitative assessment of spinal cord injury using circularly polarized coherent anti-Stokes Raman scattering microscopy
    AIP Publishing ; 2017
    In:  Applied Physics Letters Vol. 111, No. 6 ( 2017-08-07)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 111, No. 6 ( 2017-08-07)
    Abstract: We report the quantitative assessment of spinal cord injury using the circularly polarized coherent anti-Stokes Raman scattering (CP-CARS) technique together with Stokes parameters in the Poincaré sphere. The pump and Stokes excitation beams are circularly polarized to suppress both the linear polarization-dependent artifacts and the nonresonant background of tissue CARS imaging, enabling quantitative CP-CARS image analysis. This study shows that CP-CARS imaging uncovers significantly increased phase retardance of injured spinal cord tissue as compared to normal tissue, suggesting that CP-CARS is an appealing label-free imaging tool for determining the degree of tissue phase retardance, which could serve as a unique diagnostic parameter associated with nervous tissue injury.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.1063/1.4991792
    DOI: 10.1063/1.4991792.1
    DOI: 10.1063/1.4991792.2
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2017
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Ultra-sensitive graphene photodetector with plasmonic structure
    AIP Publishing ; 2016
    In:  Applied Physics Letters Vol. 109, No. 17 ( 2016-10-24)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 109, No. 17 ( 2016-10-24)
    Abstract: We report a graphene-based photodetector with ultra-high photoresponsivity and wavelength selectivity, targeting at the mid-infrared (MIR) regime. To enhance the spectral selectivity, a gold-grating structure is designed and implemented under the graphene layer to excite surface plasmon polaritons (SPPs). The electromagnetic field with specific wavelength can be guided to and confined within the designed subwavelength structures. The graphene layer contacted by metal is slightly p-type doped due to gold grating, improving the interband transition rate of electrons. The built-in potential established in the contact region facilitates the separation of non-equilibrium carriers generated on graphene layer, leading to a photovoltage. With optimized structural design the photodetector exhibits excellent photoresponsivity of 1 V/μW at the wavelength of 9 μm.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4966597
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 7
    Online Resource
    Online Resource
    Oxygen vacancy-induced ferromagnetism in Bi4NdTi3FeO15 multiferroic ceramics
    AIP Publishing ; 2016
    In:  Journal of Applied Physics Vol. 120, No. 15 ( 2016-10-21)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 120, No. 15 ( 2016-10-21)
    Abstract: Layered Aurivillius compounds with multiferroic properties have attracted much attention due to their rich fundamental physics and great application potential. However, the ferroelectric and magnetic properties are different for these compounds with different synthesis conditions. In this paper, we investigate the structure, ferroelectricity, and magnetism of four-layer Aurivillius-phase multiferroic Bi4NdTi3FeO15. The four-layer structure is confirmed by powder X-ray diffraction and high-angle annular dark field scanning transmission electron microscopy. The ferroelectricity together with dielectric constant can be reduced by vacuum-annealing treatment due to the increase of oxygen vacancy concentration. More interestingly, the ferromagnetism is strongly enhanced by vacuum-annealing and can be obviously suppressed after re-oxidization, which may be associated with Fe3+-O-Fe2+ coupling originated from the variable valence state of Fe with different oxidization conditions. These findings indicate that oxygen vacancies play a crucial role in the ferroelectric and magnetic properties in Aurivillius compounds synthesized by different conditions.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.4965702
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 8
    Online Resource
    Online Resource
    Angular radiation temperature simulation for time-dependent capsule drive prediction in inertial confinement fusion
    AIP Publishing ; 2015
    In:  Physics of Plasmas Vol. 22, No. 2 ( 2015-02-01)
    Details
    In: Physics of Plasmas, AIP Publishing, Vol. 22, No. 2 ( 2015-02-01)
    Abstract: The x-ray drive on a capsule in an inertial confinement fusion setup is crucial for ignition. Unfortunately, a direct measurement has not been possible so far. We propose an angular radiation temperature simulation to predict the time-dependent drive on the capsule. A simple model, based on the view-factor method for the simulation of the radiation temperature, is presented and compared with the experimental data obtained using the OMEGA laser facility and the simulation results acquired with VISRAD code. We found a good agreement between the time-dependent measurements and the simulation results obtained using this model. The validated model was then used to analyze the experimental results from the Shenguang-III prototype laser facility. More specifically, the variations of the peak radiation temperatures at different view angles with the albedo of the hohlraum, the motion of the laser spots, the closure of the laser entrance holes, and the deviation of the laser power were investigated. Furthermore, the time-dependent radiation temperature at different orientations and the drive history on the capsule were calculated. The results indicate that the radiation temperature from “U20W112” (named according to the diagnostic hole ID on the target chamber) can be used to approximately predict the drive temperature on the capsule. In addition, the influence of the capsule on the peak radiation temperature is also presented.
    Type of Medium: Online Resource
    ISSN: 1070-664X , 1089-7674
    URL: Article
    DOI: 10.1063/1.4908276
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2015
    detail.hit.zdb_id: 1472746-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 9
    Online Resource
    Online Resource
    An insight into liquid water networks through hydrogen bonding halide anion: Stimulated Raman scattering
    AIP Publishing ; 2016
    In:  Journal of Applied Physics Vol. 119, No. 16 ( 2016-04-28)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 119, No. 16 ( 2016-04-28)
    Abstract: We have studied the interaction between water molecules and halide anions and acquired the influence of concentration by the spontaneous Raman spectrum. The results agreed well with the previous researches. To explore further, the stimulated Raman scattering of a halide–water binary solution is measured to study the nature of the hydrogen bonding between water molecules and halogen anions. Under the effect of laser-induced plasma, the OH stretching vibration spectra of aqueous solutions of halogen ions pretty exhibit different trend compared with that of spontaneous Raman spectrum. The frequency shifts of water OH vibration show different values and directions with adding different halide anions. The red shift of F−– and Cl−–water molecule clusters is due to the process of charge transfer, whereas the blue shift of Br−– and I−–water molecule cluster is due to polarization effect without charge transfer. The results demonstrate that F− and Cl− slightly weaken the hydrogen bond (HB), whereas Br− and I− enhance HB in the water cluster. The decrease of concentration of halogen ions aqueous solution can weaken the effect on the HB.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.4947292
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 10
    Online Resource
    Online Resource
    Epi-detected quadruple-modal nonlinear optical microscopy for label-free imaging of the tooth
    AIP Publishing ; 2015
    In:  Applied Physics Letters Vol. 106, No. 3 ( 2015-01-19)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 106, No. 3 ( 2015-01-19)
    Abstract: We present an epi-detected quadruple-modal nonlinear optical microscopic imaging technique (i.e., coherent anti-Stokes Raman scattering (CARS), second-harmonic generation (SHG), third-harmonic generation (THG), and two-photon excited fluorescence (TPEF)) based on a picosecond (ps) laser-pumped optical parametric oscillator system for label-free imaging of the tooth. We demonstrate that high contrast ps-CARS images covering both the fingerprint (500–1800 cm−1) and high-wavenumber (2500–3800 cm−1) regions can be acquired to uncover the distributions of mineral and organic biomaterials in the tooth, while high quality TPEF, SHG, and THG images of the tooth can also be acquired under ps laser excitation without damaging the samples. The quadruple-modal nonlinear microscopic images (CARS/SHG/THG/TPEF) acquired provide better understanding of morphological structures and biochemical/biomolecular distributions in the dentin, enamel, and the dentin-enamel junction of the tooth without labeling, facilitating optical diagnosis and characterization of the tooth in dentistry.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4906447
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2015
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...