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Showing 1 to 12 of 162 entries
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Anisotropy of excitation and relaxation of photogenerated charge carriers in graphene.

Nano letters

Mittendorff M, Winzer T, Malic E, Knorr A, Berger C, de Heer WA, Schneider H, Helm M, Winnerl S.
PMID: 24559191
Nano Lett. 2014 Mar 12;14(3):1504-7. doi: 10.1021/nl404730y. Epub 2014 Feb 24.

We present a pump-probe experiment on graphene, which reveals a pronounced dependence of the pump-induced transmission on the angle between pump and probe polarization. It reflects a strong anisotropy of the pump-induced occupation of photogenerated carriers in momentum space....

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Mittendorff M, Winzer T, Malic E, et al. Anisotropy of excitation and relaxation of photogenerated charge carriers in graphene. Nano Lett. 2014;14(3):1504-7doi: 10.1021/nl404730y.
Mittendorff, M., Winzer, T., Malic, E., Knorr, A., Berger, C., de Heer, W. A., Schneider, H., Helm, M., & Winnerl, S. (2014). Anisotropy of excitation and relaxation of photogenerated charge carriers in graphene. Nano letters, 14(3), 1504-7. https://doi.org/10.1021/nl404730y
Mittendorff, Martin, et al. "Anisotropy of excitation and relaxation of photogenerated charge carriers in graphene." Nano letters vol. 14,3 (2014): 1504-7. doi: https://doi.org/10.1021/nl404730y
Mittendorff M, Winzer T, Malic E, Knorr A, Berger C, de Heer WA, Schneider H, Helm M, Winnerl S. Anisotropy of excitation and relaxation of photogenerated charge carriers in graphene. Nano Lett. 2014 Mar 12;14(3):1504-7. doi: 10.1021/nl404730y. Epub 2014 Feb 24. PMID: 24559191.
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Modelling TFE renal cell carcinoma in mice reveals a critical role of WNT signaling.

eLife

Calcagnì A, Kors L, Verschuren E, De Cegli R, Zampelli N, Nusco E, Confalonieri S, Bertalot G, Pece S, Settembre C, Malouf GG, Leemans JC, de Heer E, Salvatore M, Peters DJ, Di Fiore PP, Ballabio A.
PMID: 27668431
Elife. 2016 Sep 26;5. doi: 10.7554/eLife.17047.

No abstract available.

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Calcagnì A, Kors L, Verschuren E, et al. Modelling TFE renal cell carcinoma in mice reveals a critical role of WNT signaling. Elife. 2016;5doi: 10.7554/eLife.17047.
Calcagnì, A., Kors, L., Verschuren, E., De Cegli, R., Zampelli, N., Nusco, E., Confalonieri, S., Bertalot, G., Pece, S., Settembre, C., Malouf, G. G., Leemans, J. C., de Heer, E., Salvatore, M., Peters, D. J., Di Fiore, P. P., & Ballabio, A. (2016). Modelling TFE renal cell carcinoma in mice reveals a critical role of WNT signaling. eLife, 5. https://doi.org/10.7554/eLife.17047
Calcagnì, Alessia, et al. "Modelling TFE renal cell carcinoma in mice reveals a critical role of WNT signaling." eLife vol. 5 (2016). doi: https://doi.org/10.7554/eLife.17047
Calcagnì A, Kors L, Verschuren E, De Cegli R, Zampelli N, Nusco E, Confalonieri S, Bertalot G, Pece S, Settembre C, Malouf GG, Leemans JC, de Heer E, Salvatore M, Peters DJ, Di Fiore PP, Ballabio A. Modelling TFE renal cell carcinoma in mice reveals a critical role of WNT signaling. Elife. 2016 Sep 26;5. doi: 10.7554/eLife.17047. PMID: 27668431; PMCID: PMC5036965.
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Electronic cooling via interlayer Coulomb coupling in multilayer epitaxial graphene.

Nature communications

Mihnev MT, Tolsma JR, Divin CJ, Sun D, Asgari R, Polini M, Berger C, de Heer WA, MacDonald AH, Norris TB.
PMID: 26399955
Nat Commun. 2015 Sep 24;6:8105. doi: 10.1038/ncomms9105.

In van der Waals bonded or rotationally disordered multilayer stacks of two-dimensional (2D) materials, the electronic states remain tightly confined within individual 2D layers. As a result, electron-phonon interactions occur primarily within layers and interlayer electrical conductivities are low....

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Mihnev MT, Tolsma JR, Divin CJ, et al. Electronic cooling via interlayer Coulomb coupling in multilayer epitaxial graphene. Nat Commun. 2015;6:8105doi: 10.1038/ncomms9105.
Mihnev, M. T., Tolsma, J. R., Divin, C. J., Sun, D., Asgari, R., Polini, M., Berger, C., de Heer, W. A., MacDonald, A. H., & Norris, T. B. (2015). Electronic cooling via interlayer Coulomb coupling in multilayer epitaxial graphene. Nature communications, 68105. https://doi.org/10.1038/ncomms9105
Mihnev, Momchil T, et al. "Electronic cooling via interlayer Coulomb coupling in multilayer epitaxial graphene." Nature communications vol. 6 (2015): 8105. doi: https://doi.org/10.1038/ncomms9105
Mihnev MT, Tolsma JR, Divin CJ, Sun D, Asgari R, Polini M, Berger C, de Heer WA, MacDonald AH, Norris TB. Electronic cooling via interlayer Coulomb coupling in multilayer epitaxial graphene. Nat Commun. 2015 Sep 24;6:8105. doi: 10.1038/ncomms9105. PMID: 26399955; PMCID: PMC4598362.
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Four-Wave Mixing in Landau-Quantized Graphene.

Nano letters

König-Otto JC, Wang Y, Belyanin A, Berger C, de Heer WA, Orlita M, Pashkin A, Schneider H, Helm M, Winnerl S.
PMID: 28234493
Nano Lett. 2017 Apr 12;17(4):2184-2188. doi: 10.1021/acs.nanolett.6b04665. Epub 2017 Feb 28.

For Landau-quantized graphene, featuring an energy spectrum consisting of nonequidistant Landau levels, theory predicts a giant resonantly enhanced optical nonlinearity. We verify the nonlinearity in a time-integrated degenerate four-wave mixing (FWM) experiment in the mid-infrared spectral range, involving the...

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König-Otto JC, Wang Y, Belyanin A, et al. Four-Wave Mixing in Landau-Quantized Graphene. Nano Lett. 2017;17(4):2184-2188doi: 10.1021/acs.nanolett.6b04665.
König-Otto, J. C., Wang, Y., Belyanin, A., Berger, C., de Heer, W. A., Orlita, M., Pashkin, A., Schneider, H., Helm, M., & Winnerl, S. (2017). Four-Wave Mixing in Landau-Quantized Graphene. Nano letters, 17(4), 2184-2188. https://doi.org/10.1021/acs.nanolett.6b04665
König-Otto, Jacob C, et al. "Four-Wave Mixing in Landau-Quantized Graphene." Nano letters vol. 17,4 (2017): 2184-2188. doi: https://doi.org/10.1021/acs.nanolett.6b04665
König-Otto JC, Wang Y, Belyanin A, Berger C, de Heer WA, Orlita M, Pashkin A, Schneider H, Helm M, Winnerl S. Four-Wave Mixing in Landau-Quantized Graphene. Nano Lett. 2017 Apr 12;17(4):2184-2188. doi: 10.1021/acs.nanolett.6b04665. Epub 2017 Feb 28. PMID: 28234493.
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A nutrition strategy for obese ICU patients with special consideration for the reference of protein.

Clinical nutrition ESPEN

Kreymann KG, DeLegge MH, Luft G, de Heer G.
PMID: 28531470
Clin Nutr ESPEN. 2015 Oct;10(5):e160-e166. doi: 10.1016/j.clnesp.2015.07.001. Epub 2015 Aug 28.

Hypocaloric, high protein feeding regimens have been proposed for feeding obese critically ill patients. However, the exact amount of energy and protein that should be provided to the obese patients with these regimens is still under discussion. Furthermore, the...

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Kreymann KG, DeLegge MH, Luft G, et al. A nutrition strategy for obese ICU patients with special consideration for the reference of protein. Clin Nutr ESPEN. 2015;10(5):e160-e166doi: 10.1016/j.clnesp.2015.07.001.
Kreymann, K. G., DeLegge, M. H., Luft, G., & de Heer, G. (2015). A nutrition strategy for obese ICU patients with special consideration for the reference of protein. Clinical nutrition ESPEN, 10(5), e160-e166. https://doi.org/10.1016/j.clnesp.2015.07.001
Kreymann, K Georg, et al. "A nutrition strategy for obese ICU patients with special consideration for the reference of protein." Clinical nutrition ESPEN vol. 10,5 (2015): e160-e166. doi: https://doi.org/10.1016/j.clnesp.2015.07.001
Kreymann KG, DeLegge MH, Luft G, de Heer G. A nutrition strategy for obese ICU patients with special consideration for the reference of protein. Clin Nutr ESPEN. 2015 Oct;10(5):e160-e166. doi: 10.1016/j.clnesp.2015.07.001. Epub 2015 Aug 28. PMID: 28531470.
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Magnetism and exchange interaction of small rare-earth clusters; Tb as a representative.

Scientific reports

Peters L, Ghosh S, Sanyal B, van Dijk C, Bowlan J, de Heer W, Delin A, Di Marco I, Eriksson O, Katsnelson MI, Johansson B, Kirilyuk A.
PMID: 26795239
Sci Rep. 2016 Jan 22;6:19676. doi: 10.1038/srep19676.

Here we follow, both experimentally and theoretically, the development of magnetism in Tb clusters from the atomic limit, adding one atom at a time. The exchange interaction is, surprisingly, observed to drastically increase compared to that of bulk, and...

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Peters L, Ghosh S, Sanyal B, et al. Magnetism and exchange interaction of small rare-earth clusters; Tb as a representative. Sci Rep. 2016;6:19676doi: 10.1038/srep19676.
Peters, L., Ghosh, S., Sanyal, B., van Dijk, C., Bowlan, J., de Heer, W., Delin, A., Di Marco, I., Eriksson, O., Katsnelson, M. I., Johansson, B., & Kirilyuk, A. (2016). Magnetism and exchange interaction of small rare-earth clusters; Tb as a representative. Scientific reports, 619676. https://doi.org/10.1038/srep19676
Peters, Lars, et al. "Magnetism and exchange interaction of small rare-earth clusters; Tb as a representative." Scientific reports vol. 6 (2016): 19676. doi: https://doi.org/10.1038/srep19676
Peters L, Ghosh S, Sanyal B, van Dijk C, Bowlan J, de Heer W, Delin A, Di Marco I, Eriksson O, Katsnelson MI, Johansson B, Kirilyuk A. Magnetism and exchange interaction of small rare-earth clusters; Tb as a representative. Sci Rep. 2016 Jan 22;6:19676. doi: 10.1038/srep19676. PMID: 26795239; PMCID: PMC4726341.
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Clinical characteristics and outcome of very elderly patients ≥90 years in intensive care: a retrospective observational study.

Annals of intensive care

Becker S, Müller J, de Heer G, Braune S, Fuhrmann V, Kluge S.
PMID: 26690798
Ann Intensive Care. 2015 Dec;5(1):53. doi: 10.1186/s13613-015-0097-1. Epub 2015 Dec 21.

BACKGROUND: Since the overall prognosis of very elderly patients is generally limited, admissions to intensive care in these patients are often restricted. Therefore, only very few information is available on the prognosis of nonagenarians after intensive care treatment. The...

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Becker S, Müller J, de Heer G, et al. Clinical characteristics and outcome of very elderly patients ≥90 years in intensive care: a retrospective observational study. Ann Intensive Care. 2015;5(1):53doi: 10.1186/s13613-015-0097-1.
Becker, S., Müller, J., de Heer, G., Braune, S., Fuhrmann, V., & Kluge, S. (2015). Clinical characteristics and outcome of very elderly patients ≥90 years in intensive care: a retrospective observational study. Annals of intensive care, 5(1), 53. https://doi.org/10.1186/s13613-015-0097-1
Becker, Sophie, et al. "Clinical characteristics and outcome of very elderly patients ≥90 years in intensive care: a retrospective observational study." Annals of intensive care vol. 5,1 (2015): 53. doi: https://doi.org/10.1186/s13613-015-0097-1
Becker S, Müller J, de Heer G, Braune S, Fuhrmann V, Kluge S. Clinical characteristics and outcome of very elderly patients ≥90 years in intensive care: a retrospective observational study. Ann Intensive Care. 2015 Dec;5(1):53. doi: 10.1186/s13613-015-0097-1. Epub 2015 Dec 21. PMID: 26690798; PMCID: PMC4686461.
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Thermal reduction of 7H-benz[d,e]anthracen-7-one and related ketones under hydrogen-transfer conditions.

The Journal of organic chemistry

Mulder P, Hemmink S, De Heer MI, Lupo M, Santoro D, Korth HG.
PMID: 11578211
J Org Chem. 2001 Oct 05;66(20):6611-9. doi: 10.1021/jo015637v.

In the presence of hydrogen donor solvents and at elevated temperatures, aromatic ketones can be selectively deoxygenated to the corresponding hydroaromatic compounds. The kinetics for reduction of 7H-benz[d,e]anthracen-7-one (benzanthrone, 6) into 7H-benz[d,e]anthracene (benzanthrene, 1) in 9,10-dihydroanthracene (3) solvent has...

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Mulder P, Hemmink S, De Heer MI, et al. Thermal reduction of 7H-benz[d,e]anthracen-7-one and related ketones under hydrogen-transfer conditions. J Org Chem. 2001;66(20):6611-9doi: 10.1021/jo015637v.
Mulder, P., Hemmink, S., De Heer, M. I., Lupo, M., Santoro, D., & Korth, H. G. (2001). Thermal reduction of 7H-benz[d,e]anthracen-7-one and related ketones under hydrogen-transfer conditions. The Journal of organic chemistry, 66(20), 6611-9. https://doi.org/10.1021/jo015637v
Mulder, P, et al. "Thermal reduction of 7H-benz[d,e]anthracen-7-one and related ketones under hydrogen-transfer conditions." The Journal of organic chemistry vol. 66,20 (2001): 6611-9. doi: https://doi.org/10.1021/jo015637v
Mulder P, Hemmink S, De Heer MI, Lupo M, Santoro D, Korth HG. Thermal reduction of 7H-benz[d,e]anthracen-7-one and related ketones under hydrogen-transfer conditions. J Org Chem. 2001 Oct 05;66(20):6611-9. doi: 10.1021/jo015637v. PMID: 11578211.
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Oxygen-carbon bond dissociation enthalpies of benzyl phenyl ethers and anisoles. An example of temperature dependent substituent effects.

Journal of the American Chemical Society

Pratt DA, de Heer MI, Mulder P, Ingold KU.
PMID: 11389634
J Am Chem Soc. 2001 Jun 13;123(23):5518-26. doi: 10.1021/ja004081a.

For some time it has been assumed that the direction and magnitude of the effects of Y-substituents on the Z-X bond dissociation enthalpies (BDE's) in compounds of the general formula 4-YC(6)H(4)Z-X could be correlated with the polarity of the...

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Pratt DA, de Heer MI, Mulder P, et al. Oxygen-carbon bond dissociation enthalpies of benzyl phenyl ethers and anisoles. An example of temperature dependent substituent effects. J Am Chem Soc. 2001;123(23):5518-26doi: 10.1021/ja004081a.
Pratt, D. A., de Heer, M. I., Mulder, P., & Ingold, K. U. (2001). Oxygen-carbon bond dissociation enthalpies of benzyl phenyl ethers and anisoles. An example of temperature dependent substituent effects. Journal of the American Chemical Society, 123(23), 5518-26. https://doi.org/10.1021/ja004081a
Pratt, D A, et al. "Oxygen-carbon bond dissociation enthalpies of benzyl phenyl ethers and anisoles. An example of temperature dependent substituent effects." Journal of the American Chemical Society vol. 123,23 (2001): 5518-26. doi: https://doi.org/10.1021/ja004081a
Pratt DA, de Heer MI, Mulder P, Ingold KU. Oxygen-carbon bond dissociation enthalpies of benzyl phenyl ethers and anisoles. An example of temperature dependent substituent effects. J Am Chem Soc. 2001 Jun 13;123(23):5518-26. doi: 10.1021/ja004081a. PMID: 11389634.
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Carbon nanotubes--the route toward applications.

Science (New York, N.Y.)

Baughman RH, Zakhidov AA, de Heer WA.
PMID: 12161643
Science. 2002 Aug 02;297(5582):787-92. doi: 10.1126/science.1060928.

Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects. Some of...

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Baughman RH, Zakhidov AA, de Heer WA. Carbon nanotubes--the route toward applications. Science. 2002;297(5582):787-92doi: 10.1126/science.1060928.
Baughman, R. H., Zakhidov, A. A., & de Heer, W. A. (2002). Carbon nanotubes--the route toward applications. Science (New York, N.Y.), 297(5582), 787-92. https://doi.org/10.1126/science.1060928
Baughman, Ray H, et al. "Carbon nanotubes--the route toward applications." Science (New York, N.Y.) vol. 297,5582 (2002): 787-92. doi: https://doi.org/10.1126/science.1060928
Baughman RH, Zakhidov AA, de Heer WA. Carbon nanotubes--the route toward applications. Science. 2002 Aug 02;297(5582):787-92. doi: 10.1126/science.1060928. PMID: 12161643.
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Ferroelectricity in free niobium clusters.

Science (New York, N.Y.)

Moro R, Xu X, Yin S, de Heer WA.
PMID: 12764191
Science. 2003 May 23;300(5623):1265-9. doi: 10.1126/science.1083247.

Electric deflections of gas-phase, cryogenically cooled, neutral niobium clusters [NbN; number of atoms (N) = 2 to 150, temperature (T) = 20to 300kelvin], measured in molecular beams, show that cold clusters may attain an anomalous component with very large...

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Moro R, Xu X, Yin S, et al. Ferroelectricity in free niobium clusters. Science. 2003;300(5623):1265-9doi: 10.1126/science.1083247.
Moro, R., Xu, X., Yin, S., & de Heer, W. A. (2003). Ferroelectricity in free niobium clusters. Science (New York, N.Y.), 300(5623), 1265-9. https://doi.org/10.1126/science.1083247
Moro, Ramiro, et al. "Ferroelectricity in free niobium clusters." Science (New York, N.Y.) vol. 300,5623 (2003): 1265-9. doi: https://doi.org/10.1126/science.1083247
Moro R, Xu X, Yin S, de Heer WA. Ferroelectricity in free niobium clusters. Science. 2003 May 23;300(5623):1265-9. doi: 10.1126/science.1083247. PMID: 12764191.
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Aligned carbon nanotube films: production and optical and electronic properties.

Science (New York, N.Y.)

Deheer WA, Bacsa WS, Châtelain A, Gerfin T, Humphrey-Baker R, Forro L, Ugarte D.
PMID: 17792177
Science. 1995 May 12;268(5212):845-7. doi: 10.1126/science.268.5212.845.

Carbon nanotube material can now be produced in macroscopic quantities. However, the raw material has a disordered structure, which restricts investigations of both the properties and applications of the nanotubes. A method has been developed to produce thin films...

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Deheer WA, Bacsa WS, Châtelain A, et al. Aligned carbon nanotube films: production and optical and electronic properties. Science. 1995;268(5212):845-7doi: 10.1126/science.268.5212.845.
Deheer, W. A., Bacsa, W. S., Châtelain, A., Gerfin, T., Humphrey-Baker, R., Forro, L., & Ugarte, D. (1995). Aligned carbon nanotube films: production and optical and electronic properties. Science (New York, N.Y.), 268(5212), 845-7. https://doi.org/10.1126/science.268.5212.845
Deheer, W A, et al. "Aligned carbon nanotube films: production and optical and electronic properties." Science (New York, N.Y.) vol. 268,5212 (1995): 845-7. doi: https://doi.org/10.1126/science.268.5212.845
Deheer WA, Bacsa WS, Châtelain A, Gerfin T, Humphrey-Baker R, Forro L, Ugarte D. Aligned carbon nanotube films: production and optical and electronic properties. Science. 1995 May 12;268(5212):845-7. doi: 10.1126/science.268.5212.845. PMID: 17792177.
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