| 1. |
- Bi, Zhaoxia, et al.
(författare)
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InN quantum dots on GaN nanowires grown by MOVPE
- 2014
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Ingår i: physica status solidi (c). - : Wiley. - 1862-6351 .- 1610-1642 .- 1610-1634. ; 11, s. 421-424
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Tidskriftsartikel (refereegranskat)abstract
- In this work, growth of InN quantum dots (QDs) on GaN nanowires (NWs) by metal-organic vapour phase epitaxy is demonstrated, illustrating the feasibility to combine 0D and 1D structures for nitride semiconductors. Selective area growth was used to generate arrays of c-oriented GaN NWs using Si3N4 as the mask material. In general, InN QDs tend to form at the NW edges between the m-plane side facets, but the QD growth can also be tuned to the side facets by controlling the growth temperature and the growth rate. TEM characterization reveals that I1-type stacking faults are formed in the QDs and originate from the misfit dislocations at the InN/GaN interface. Photoluminescence measurement at 4 K shows that the peak shifts to high energy with reduced dot size. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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| 2. |
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| 3. |
- Bergström, Annika, 1964, et al.
(författare)
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Brytningstider
- 2014
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Ingår i: Bergström, Annika och Ohlsson, Jonas (red) Brytningstider. Samhälle, Opinion och Medier i Västsverige. Göteborg: SOM-institutet vid Göteborgs universitet. - Göteborg : University of Gothenburg. - 9789189673311 ; , s. 9-29
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 4. |
- Bergström, Annika, 1964, et al.
(författare)
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En region för alla?
- 2013
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Ingår i: Bergström, Annika & Jonas Ohlsson (red) En region för alla? Medborgare, människor och medier i Västsverige. - Göteborg : SOM-institutet vid Göteborgs universitet. - 9789189673298 ; , s. 9-30
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Bergström, Annika, 1964, et al.
(författare)
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Medborgarna om välfärden
- 2012
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Ingår i: Medborgarna om välfärden : samhälle, opinion och medier i västsverige : den västsvenska SOM-undersökningen 2011 / Annika Bergström och Jonas Ohlsson (red). - Göteborg : University of Gothenburg. - 9789189673250 ; , s. 9-27
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 6. |
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| 7. |
- Björk, Jonas, et al.
(författare)
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Risk predictions for individual patients from logistic regression were visualized with bar-line charts.
- 2012
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Ingår i: Journal of Clinical Epidemiology. - : Elsevier BV. - 1878-5921 .- 0895-4356. ; 65, s. 335-342
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: The interface of a computerized decision support system is crucial for its acceptance among end users. We demonstrate how combined bar-line charts can be used to visualize predictions for individual patients from logistic regression models. STUDY DESIGN AND SETTING: Data from a previous diagnostic study aiming at predicting the immediate risk of acute coronary syndrome (ACS) among 634 patients presenting to an emergency department with chest pain were used. Risk predictions from the logistic regression model were presented for four hypothetical patients in bar-line charts with bars representing empirical Bayes adjusted likelihood ratios (LRs) and the line representing the estimated probability of ACS, sequentially updated from left to right after assessment of each risk factor. RESULTS: Two patients had similar low risk for ACS but quite different risk profiles according to the bar-line charts. Such differences in risk profiles could not be detected from the estimated ACS risk alone. The bar-line charts also highlighted important but counteracted risk factors in cases where the overall LR was less informative (close to one). CONCLUSION: The proposed graphical technique conveys additional information from the logistic model that can be important for correct diagnosis and classification of patients and appropriate medical management.
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| 8. |
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| 9. |
- de Woul, Jonas, et al.
(författare)
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Establishing analogies between the physics of extra dimensions and carbon nanotubes
- 2012
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Ingår i: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 714:1, s. 44-47
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Tidskriftsartikel (refereegranskat)abstract
- We point out a conceptual analogy between the physics of extra spatial dimensions and the physics of carbon nanotubes which arises for principle reasons, although the corresponding energy scales are at least ten orders of magnitude apart. For low energies, one can apply the Kaluza-Klein description to both types of systems, leading to two completely different but consistent interpretations of the underlying physics. In particular, we discuss in detail the Kaluza-Klein description of armchair and zig-zag carbon nanotubes. Furthermore, we describe how certain experimental results for carbon nanotubes could be re-interpreted in terms of the Kaluza-Klein description. Finally, we present ideas for new measurements that could allow to probe concepts of models with extra spatial dimensions in table-top experiments, providing further links between condensed matter and particle physics.
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| 10. |
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