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110 results on '"Wiesmann, D."'

1. Demonstration of thermomechanical recording at 641 Gbit/[in.sup.2]

Author

Pozidis, H., Haberle, W., Wiesmann, D., Drechsler, U., Despont, M., Albrecht, T.R., and Eleftheriou, E.

Subjects
Storage media -- Research, Electromagnetism -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Ultrahigh storage areal densities can be achieved by using thermomechanical local-probe techniques to write, read back, and erase data in the form of nanometer-scale indentations in thin polymer films. This paper presents single-probe experimental results in which large data sets were recorded at 641 Gbit/[in.sup.2] and read back with raw bit-error rates better than [10.sup.-4]. (d, k) modulation coding is used to mitigate the effect of partial erasing, occurring when subsequent indentations are spaced too closely together, and to increase the effective areal density. The physical indentation profile, the sensitivity of the probe in readback mode, and noise sources that affect data detection are also discussed. Quantitative measurements of the partial erasing effect in both the on-track and cross-track directions are reported. Index Terms--Areal density experiments, probe storage, thermomechanical recording.

Published
2004

2. Integrating nanotechnology into a working storage device

Author

Knoll, A., Bächtold, P., Bonan, J., Cherubini, G., Despont, M., Drechsler, U., Dürig, U., Gotsmann, B., Häberle, W., Hagleitner, C., Jubin, D., Lantz, M.A., Pantazi, A., Pozidis, H., Rothuizen, H., Sebastian, A., Stutz, R., Vettiger, P., Wiesmann, D., and Eleftheriou, E.S.

Published
2006
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4. A Nanotechnology-based Approach to Data Storage

Author

Eleftheriou, E., primary, Bächtold, P., additional, Cherubini, G., additional, Dholakia, A., additional, Hagleitner, C., additional, Loeliger, T., additional, Pantazi, A., additional, Pozidis, H., additional, Albrecht, T.R., additional, Binnig, G.K., additional, Despont, M., additional, Drechsler, U., additional, Dürig, U., additional, Gotsmann, B., additional, Jubin, D., additional, Häberle, W., additional, Lantz, M.A., additional, Rothuizen, H., additional, Stutz, R., additional, Vettiger, P., additional, and Wiesmann, D., additional

Published
2003
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5. Probe-based ultrahigh-density storage technology

Author

Pantazi, A., Sebastian, A., Antonakopoulos, T.A., Bachtold, P., Bonaccio, A.R., Bonan, J., Cherubini, G., Despont, M., DiPietro, R.A., Drechsler, U., Durig, U., Gotsmann, B., Haberle, W., Hagleitner, C., Hedrick, J.L., Jubin, D., Knoll, A., Lantz, M.A., Pentarakis, J., Pozidis, H., Pratt, R.C., Rothuizen, H., Stutz, R., Varsamou, M., Wiesmann, D., and Eleftheriou, E.

Subjects
Technology application, Computer storage device industry -- Technology application
Published
2008

7. Development of a dichotomous indicator for population-level assessment of dietary diversity in women of reproductive age

Author

Martin-Prével, Yves, Arimond, M., Allemand, P., Wiesmann, D., Ballard, T. J., Deitchler, M., Dop, M. C., Kennedy, G., Lartey, A., Lee, W. T. K., Moursi, M., Women&#8217, and s Dietary Diversity Project (WDDP) Study Group

Subjects
dietary diversity, resource-poor settings, indicator, women of reproductive age, food groups, developing countries, diet quality, nutrition-sensitive interventions
Abstract

Background: Dietary diversity is a key element of diet quality, but diets of women of reproductive age (WRA; aged 15-49 y) in resource-poor settings are often deficient in a range of micronutrients. Previous work showed associations between simple food-group diversity indicators (FGIs) and micronutrient adequacy among WRA. For operational and advocacy purposes, however, there is strong demand for a dichotomous indicator reflecting an acceptable level of dietary diversity. Objective: The aim of the study was to develop a dichotomous indicator of dietary diversity in WRA. Methods: We performed a secondary analysis of 9 data sets containing quantitative dietary data from WRA in resource-poor settings (total n = 4166). From the raw dietary data, we calculated an individual "mean probability of adequacy" (MPA) across 11 micronutrients. Several candidate FGIs were constructed. Indicator performance in predicting an MPA>0.60 was assessed within each data set by using receiver-operating characteristic analysis and sensitivity and specificity analysis at various FGI cutoffs. The analysis was performed separately for nonpregnant and nonlactating (NPNL) women and for lactating women. Results: We identified 2 "best candidate" dichotomous indicators on the basis of 9- or 10-point food-group scores (FGI-9 and FGI-10) with a cutoff of >= 5 food groups. Both were significantly correlated to MPA in each site (P= 5 of 10 defined food groups reflects "minimum dietary diversity for women of reproductive age." According to the conclusions of a consensus meeting of experts, this indicator is well suited for population-level assessment, advocacy, and possibly also for tracking of change in dietary diversity across time.

Published
2017

9. Building a cognitive platform for the managed IT services lifecycle

Author

Kloeckner, K., primary, Adam, C. M., additional, Anerousis, N., additional, Ayachitula, N., additional, Bulut, M. F., additional, Dasgupta, G., additional, Deng, Y., additional, Diao, Y., additional, Fuller, N., additional, Gopisetty, S., additional, Hernandez, M., additional, Hwang, J., additional, Iannucci, P., additional, Kalia, A. K., additional, Lanfranchi, G., additional, Lanyi, D., additional, Ludwig, H., additional, Mahamuni, A., additional, Mahindru, R., additional, Meng, F. J., additional, Nezhad, H. R. Motahari, additional, Murthy, K., additional, Nakamura, T., additional, Paradkar, A., additional, Perpetua, D., additional, Pfitzmann, B., additional, Rosu, D., additional, Shwartz, L., additional, Su, Z., additional, Surendra, M., additional, Tao, S., additional, Volzer, H., additional, Vukovic, M., additional, Wiesmann, D., additional, Wozniak, S., additional, Wright, G., additional, Xiao, J., additional, and Zeng, S., additional

Published
2018
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17. Knollet al.Reply

Author

Knoll, A., primary, Wiesmann, D., additional, Gotsmann, B., additional, and Duerig, U., additional

Published
2009
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22. Functionalized fluorinated hyperbranched polymers for optical waveguide applications

Author

Pitois, C., Wiesmann, D., Lindgren, M., Hult, Anders, Pitois, C., Wiesmann, D., Lindgren, M., and Hult, Anders

Abstract

Fluorinated dendritic or hyperbranched polymers are demonstrated for the first time to be potentially useful for optical waveguide applications, for example in telecommunications. The required materials properties include the control of the refractive index over a wide range and UV-crosslinking for ease of processing and stable long-term mechanical properties. The authors report the synthesis of suitable functionalized fluorinated hyperbranched polymers and how the above requirements can be met by functionalization at the periphery of the polymers., QC 20100525

Published
2001
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23. Absorption and scattering in low-loss polymer optical waveguides

Author

Pitois, C., Hult, Anders, Wiesmann, D., Pitois, C., Hult, Anders, and Wiesmann, D.

Abstract

The absolute absorption spectra of low-loss optical waveguides, together with their intrinsic and extrinsic scatterings, were measured in the near infrared. Photothermal deflection spectroscopy was used to measure the full absorption spectra of a series of fluorinated cross-linked polymers. Assignment of-CH3,-CH2-, and -OH overtones as well as of combinations of overtones were made by use of the theory of anharmonic vibrations based on a Morse potential for local modes. Details of the molecular potential are given. The total attenuation in slab waveguides made with these polymers was measured by a prism-coupling technique and compared with the absolute absorption. Losses that are due to the material itself and those that are due to the processing are quantified., QC 20100525

Published
2001
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24. Functionalized fluorinated hyperbranched polymers for optical waveguide applications

Author

Pitois, C, Wiesmann, D, Lindgren, M, Hult, A, Pitois, C, Wiesmann, D, Lindgren, M, and Hult, A

Abstract

Fluorinated dendritic or hyperbranched polymers are demonstrated for the first time to be potentially useful for optical waveguide applications, for example in telecommunications. The required materials properties include the control of the refractive index over a wide range and UV-crosslinking for ease of processing and stable long-term mechanical properties. The authors report the synthesis of suitable functionalized fluorinated hyperbranched polymers and how the above requirements can be met by functionalization at the periphery of the polymers.

Published
2001

42. ScAlMgO4: an Oxide Substrate for GaN Epitaxy

Author

Hellman, E. S., primary, Brandle, C. D., additional, Schneemeyer, L. F., additional, Wiesmann, D., additional, Brener, I., additional, Siegrist, T., additional, Berkstresser, G. W., additional, Buchanan, D. N. E., additional, and Hartford, E. H., additional

Published
1996
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47. ScAlMgO4: An Oxide Substrate for GaN Epitaxy

Author

Hellman, E. S., primary, Brandle, C. D., additional, Schneemeyer, L. F., additional, Wiesmann, D., additional, Brener, I., additional, Siegrist, T., additional, Berkstresser, G. W., additional, Buchanan, D. N. E., additional, and Hartford, E. H., additional

Published
1995
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49. Demonstration of Thermomechanical Recording at 641 Gbit/in2.

Author

Pozidis, H., Häberle, W., Wiesmann, D., Drechsler, U., Despont, M., Albrecht, T. R., and Eleftheriou, E.

Subjects
MAGNETIC recorders & recording, THIN films, THERMODYNAMICS, POLYMERS, SOLID state electronics, HEAT
Abstract

Ultrahigh storage areal densities can be achieved by using thermomechanical local-probe techniques to write, read back, and erase data in the form of nanometer-scale indentations in thin polymer films. This paper presents single-probe experimental results in which large data sets were recorded at 641 Chit/in² and read back with raw bit-error rates better than 10-4. (d, k) modulation coding is used to mitigate the effect of partial erasing, occurring when subsequent indentations are spaced too closely together, and to increase the effective areal density. The physical indentation profile, the sensitivity of the probe in readback mode, and noise sources that affect data detection are also discussed. Quantitative measurements of the partial erasing effect in both the on-track and cross-track directions are reported. [ABSTRACT FROM AUTHOR]

Published
2004
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