Library

X
Language
Preferred search index
Number of Hits per Page
Default Sort Criterion
Default Sort Ordering
Size of Search History
Default Email Address
Default Export Format
Default Export Encoding
Facet list arrangement
Maximum number of values per filter
Auto Completion
Feed Format
Maximum Number of Items per Feed
Permalink If you want to be able to use settings permanently, you must save your settings and then set a Bookmark to the permalink
feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    The low electric field conduction mechanism of silicon oxide-silicon nitride-silicon oxide interpoly-Si dielectrics (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 3912-3914 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model for the leakage current of silicon oxide-silicon nitride-silicon oxide (ONO) dielectrics at low electric fields ((approximately-equal-to)2 MV/cm) was successfully developed. It is proposed that two transition mechanisms occur simultaneously. One is the detrapping of electrons from the silicon dangling bond in amorphous silicon nitride (SiN), which corresponds with the transition of dangling bonds among three possible charge states. The second is the direct tunneling of the detrapped electrons from the SiN to the gate through the thin silicon oxide. Both the location and the energy levels of the defect state are taken into account. The energy level, and the intrinsic time constant of the Si dangling bond and the uniform trap density in SiN, can be obtained by comparing the experimental results of the ONO discharge current with the calculated ones based on the above model. It can be found that the energy levels for negatively charged and neutral Si dangling bonds (E− and E0), with respect to the SiN conduction band, are 1.2 and 2.0 eV, respectively, the intrinsic time constants t− and t0 are 1.0×10−14 and 4.0×10−13 s, respectively, and the uniform trap density is 4.0×1019/cm3. From the energy level difference between E− and E0, we can conclude that the effective correlation energy of the Si dangling bonds in SiN is 0.8 eV, which is consistent with Robertson's results based on a tight binding calculation. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359908
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Compensation centers in ZnSeTe (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 86 (1999), S. 5993-5999 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Extended x-ray absorption fine structure (EXAFS), Rutherford-backscattering ion channeling, and particle induced x-ray emission channeling (PIXE/C) measurements have been performed in order to investigate compensation centers in Cl doped ZnSeTe. The EXAFS results from Cl doped ZnSeTe suggest that almost all Cl atoms are incorporated into substitutional Se lattice sites, which seems to indicate that Cl atoms themselves are not responsible for the compensation centers. The PIXE/C angular profiles were measured across the 〈100〉, 〈110〉, and 〈111〉 axes for undoped ZnSeTe. Comparing the angular profiles for Zn Kα, Se Kα, and Te Lα x-ray yields, it was found that some portion of the Te atoms (∼1020 cm−3) are located at tetrahedral interstitial sites. From these results, the difficulty of realizing n-type ZnSeTe is considered to be due to the existence of the interstitial Te atoms which act as acceptors. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.371645
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Growth and characterization of 10-nm-thick c-axis oriented epitaxial PbZr0.25Ti0.75O3 thin films on (100)Si substrate (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 73 (1998), S. 3524-3526 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A 10-nm-thick PbZr0.25Ti0.75O3 thin film is epitaxially grown on a SrRuO3/BaTiO3/ZrO2/Si heterostructure substrate by reactive evaporation. Structural and electrical properties of the film are investigated. It is concluded that the film is ferroelectric and retains a native uniform upward polarization. Artificial downward polarization domains, whose average diameter is 24 nm, can be formed in the film. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.122824
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Formation and observation of 50 nm polarized domains in PbZr1−xTixO3 thin film using scanning probe microscope (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 2358-2359 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nanometer size polarized domains were written in a PbZr1−xTixO3 (PZT) thin film using an atomic force microscope (AFM) and the relationship between the polarized domain and the grain of the film was investigated. The polarized domain was formed by applying a pulse voltage to the ferroelectric PZT thin film through a conductive AFM tip. The polarized domain structure was observed by imaging the piezoelectric-induced surface vibration by an AFM with an ac voltage applied between the tip and the bottom electrode of a sample. The polarized domains with a diameter of 50 nm were written within a single grain. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.115857
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Detection of hot electron current with scanning hot electron microscopy (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 2196-2198 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Scanning hot electron microscopy (SHEM) has been proposed as an experimental technique which allows for detection of hot electrons emitted from a subsurface semiconductor structure, thus making it possible to obtain the spatial distribution of hot electrons in a device. Here we present the experimental evidence of SHEM operation. Hot electrons with energies of 3 eV are injected by means of a Si/CaF2/Au heterostructure and subsequently detected at the tip of a scanning tunneling microscope in the SHEM configuration. The measured hot electron current was approximately 4 pA for a tunnel current of 5 nA. These results, although still of a preliminary nature, show the potential of SHEM as a technique suitable for the visualization of electron wave effects in semiconductor structures. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117163
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Advances in Polarized Electron Sources (1995)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 45 (1995), S. 41-88 
    Details
    ISSN: 0163-8998
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ns.45.120195.000353
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    HLA class II is associated with the frequency of glutamic acid decarboxylase Mr 65 000 autoantibodies in Japanese patients with insulin-dependent diabetes mellitus (1996)
    Springer
    Acta diabetologica 33 (1996), S. 108-113 
    Details
    ISSN: 1432-5233
    Keywords: Key words  Autoantigen ; Autoimmunity ; Insulin-dependent diabetes mellitus ; Human leukocyte antigen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract   Autoantibodies to glutamic acid decarboxylase (GAD65Ab) are common in both caucasian and Japanese patients with insulin-dependent diabetes mellitus (type 1), while the type 1-associated HLA haplotypes differ. In the present study, we analyzed GAD65Ab in relation to HLA-DQ and -DR alleles in Japanese type 1 patients. GAD65Ab were found in 58% short-duration (less than 5 years) type 1, 23% long-duration type 1, 56% slowly progressive type 1, 3% type 2 patients, and 1.7% healthy individuals. In 75 HLA-typed type 1 patients, the GAD65Ab frequency was higher in short-duration patients with DRB1*08 allele (100%, Pc〈0.05). GAD65Ab frequencies in DQB1*0302, DQB1*0303, and DRB1*09-positive, long-duration type 1 patients were lower than those in short-duration type 1 patients (14%, 19%, and 20%, Pc〈0.02 compared with short-duration type 1, 90%, 75%, and 71%, respectively), while the frequency varied less in DQB1*04 individuals (44% and 30% in short- and long-duration type 1 patients, respectively). These findings were also observed among patients with DRB1*04, i.e., the haplotype DRB1*0405-DQB1*0401 showed less variation in frequency of GAD65Ab (44% and 35% in short- and long-duration type 1 patients, respectively), while DRB1*04xx-DQB1*0302 showed lower frequency in long-duration type 1 than short-duration (13% and 100%, respectively). Thus, HLA class II is associated with frequency GAD65Ab, and this association might be affected by disease duration in Japanese type 1 patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569419
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    HLA class II is associated with the frequency of glutamic acid decarboxylase M r 65 000 autoantibodies in Japanese patients with insulin-dependent diabetes mellitus (1996)
    Springer
    Acta diabetologica 33 (1996), S. 108-113 
    Details
    ISSN: 1432-5233
    Keywords: Autoantigen ; Autoimmunity ; Insulin-dependent diabetes mellitus ; Human leukocyte antigen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Autoantibodies to glutamic acid decarboxylase (GAD65Ab) are common in both caucasian and Japanese patients with insulin-dependent diabetes mellitus (type 1), while the type 1-associated HLA haplotypes differ. In the present study, we analyzed GAD65Ab in relation to HLA-DQ and-DR alleles in Japanese type 1 patients. GAD65Ab were found in 58% short-duration (less than 5 years) type 1,23% long-duration type 1,56% slowly progressive type 1,3% type 2 patients, and 1.7% healthy individuals. In 75 HLA-typed type 1 patients, the GAD65Ab frequency was higher in short-duration patients with DRB1*08 allele (100%,Pc〈0.05). GAD65Ab frequencies in DQB1*0302, DQB1*0303, and DRB1*09-positive, long-duration type 1 patients were lower than those in short-duration type 1 patients (14%, 19%, and 20%,Pc〈0.02 compared with short-duration type 1, 90%, 75%, and 71%, respectively), while the frequency varied less in DQB1*04 individuals (44% and 30% in short- and long-duration type 1 patients, respecitively). These findings were also observed among patients with DRB1*04, i.e., the haplotype DRB1*0405-DQB1*0401 showed less variation in frequency of GAD65Ab (44% and 35% in short- and long-duration type 1 patients, respectively), while DRB1*04xx-DQB1*0302 showed lower frequency in long-duration type 1 than short-duration (13% and 100%, respectively). Thus, HLA class II is associated with frequency GAD65Ab, and this association might be affected by disease duration in Japanese type 1 patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569419
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Vertical distributions and photosynthetic action spectre of two oceanic picophytopianlcters,Prochlorococcus marinus andSynechococcus sp. (1996)
    Springer
    Marine biology 127 (1996), S. 15-23 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two picophytoplankters,Prochlorococcus marinus andSynechococcus sp., were isolated from the bottom of the euphotic zone (150 m depth) in the western Pacifie Ocean. The concentration ofP. marinus at this depth was more than 104 cells ml−1 while that ofSynechococcus sp. was less than 102 cells ml−1. TheP. marinus isolate has a high divinyl-chlorophylla:b ratio similar to that of the Mediterranean strain, while theSynechococcus sp. isolate is of the phycourobilinrich type. The growth rate ofP. marinus was higher thanSynechococcus sp. when both were cultured under weak blue-green to blue-violet light (ca. 2 μE m−2 s−1). While the chlorophyll-specific absorption spectra showed higher values inSynechococcus sp., the photosynthetic action spectre revealed thatP. marinus was able to use blue-violet light, whereasSynechococcus sp. was able to use blue-green light, more efficiently for photosynthesis. The photosynthetic quantum yield ofP. marinus was higher than that ofSynechococcus sp. at any wavelength between 400 and 700 nm. The calculated in situ photosynthesis rates per Gell volume forP. marinus were estimated to be higher than forSynechococcus sp. at 50 and 150 m depth. These results indicate thatP. marinus photosynthetically surpassesSynechococcus sp. in the blue-light-rieh environment of the oceanic euphotic zone. This may be why the former predominates at depths in temperate to tropical open ocean waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00993639
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Zooxanthellae release glucose in the tissue of a giant clam, Tridacna crocea (1999)
    Springer
    Marine biology 133 (1999), S. 665-673 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The giant clam Tridacna crocea harbors in the mantle tissue symbiotic microalgae commonly called zooxanthellae. Isolated zooxanthellae release glycerol into the medium in the presence of mantle tissue homogenate (MH), but it is not clear whether the cells do so in situ. In order to determine the photosynthetic products released by zooxanthellae in the mantle of the giant clam we traced photosynthetic fixation products from 13C- and 14C-bicarbonate both in the clam and in isolated zooxanthellae (IZ) in the presence or absence of MH. After 15 min incubation in the absence of MH the IZ released less than 0.6% of the fixed labeled carbon, mainly as glucose. The major intracellular photosynthates were neutral lipids, which constituted 20 to 40% of the total extractable 14C. In the presence of MH, the IZ released up to 5.6% of the total fixed 14C, mostly as glycerol, and the major intracellular photosynthate was glucose. In an intact clam incubated in sea water containing 14C-bicarbonate, 46 to 80% of the fixed 14C was translocated from the zooxanthellae to the host tissues. Most of the 14C in the hemolymph, in the isolated zooxanthellae and in intact mantle tissue (containing zooxanthellae) was recovered as glucose. No 14C-glycerol was detected in the mantle after 1 to 30 min incubation, and, even after 60 min, far less 14C-glycerol was synthesized than by IZ in the presence of MH. The possibility that in clam tissue glycerol is converted to glucose was examined by tracing the labeled carbon from 14C-glycerol injected into the adductor muscle. After 5 min incubation, no labeled glucose was found in the hemolymph, but after 60 min, some 20% was found as glucose. Thin slices containing zooxanthellae, cut from the surface of the mantle, fixed inorganic carbon supplied as NaH14CO3 in the medium and mainly released 14C-glucose. The addition of MH to the surrounding medium did not affect the release rate or form of release product. When the slices were cut into smaller pieces, however, the ratio of glycerol to glucose in the release product increased. These results indicate that in the presence of MH the metabolism of isolated zooxan- thellae was different from that of zooxanthellae in the mantle. In the presence of MH, isolated zooxanthellae release mostly glycerol, whereas in the mantle they release glucose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050507
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...