Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Alan M. Piwowar"'
Publikováno v:
Surface and Interface Analysis. 45:244-247
Time of flight secondary ion mass spectrometry has been used to better understand the influence of molecular environment on the relative ion yields of membrane lipid molecules found in high abundance in a model mammalian cell line, RAW264.7. Control
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a4c06b8d2f1542b217301744ae7d371
https://doi.org/10.1002/sia.4900
https://doi.org/10.1002/sia.4900
Publikováno v:
Surface and Interface Analysis. 43:207-210
In this study we examine the depth profiles of two bio-materials, an amino acid (arginine) and a polypeptide (Gly-Gly-Tyr-Arg), to observe the effects of temperature on sample analysis with time of flight secondary ion mass spectrometry (ToF-SIMS). T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59463122591ffff34d89aa9b12e6d400
https://doi.org/10.1002/sia.3461
https://doi.org/10.1002/sia.3461
Publikováno v:
Surface and Interface Analysis. 43:265-268
We present in this article a novel approach to identifying subcellular components from spectral images collected with ToF-SIMS. The method utilizes a separation technique to isolate and enrich cellular fractions which are then examined with ToF-SIMS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59ef2e1ba8905e8c2e58ad1cace805b2
https://doi.org/10.1002/sia.3436
https://doi.org/10.1002/sia.3436
Publikováno v:
Applied Surface Science. 255:912-915
In secondary ion mass spectrometry, polyatomic primary ion sources are known to enhance yields from many surfaces including polymers. In order to understand the fundamental causes for these increases, the enhancement as a function of material type an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::953f282a84a75c26c04bd28117445c33
https://doi.org/10.1016/j.apsusc.2008.05.177
https://doi.org/10.1016/j.apsusc.2008.05.177
Autor:
Joseph A. Gardella, Alan M. Piwowar
Publikováno v:
Macromolecules. 41:2616-2619
Reflection–absorption Fourier transform infrared spectroscopy (RA-FTIR) has been utilized to investigate the tertiary structures of a series of poly(dimethylsiloxane) (PDMS) films transferred to silver substrates using the Langmuir–Blodgett techn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::747041e0e23fafa8bcc6053c8c5e10de
https://doi.org/10.1021/ma702893d
https://doi.org/10.1021/ma702893d
Autor:
Gregory X. Biddulph, Alan M. Piwowar, Nicholas P. Lockyer, John C. Vickerman, John S. Fletcher
Publikováno v:
Analytical Chemistry. 79:7259-7266
C84+ and coronene (C24H12+) have been studied as primary ions for use in secondary ion mass spectrometry. A representative range of samples has been used to compare the effectiveness of each primary ion with the existing C60+, Au+, and Au3+ primary i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50ae206c832d968a024a126579f3cf6c
https://doi.org/10.1021/ac071442x
https://doi.org/10.1021/ac071442x
Autor:
Alan M. Piwowar, Joseph A. Gardella
Publikováno v:
Analytical Chemistry. 79:4126-4134
A series of model systems of poly(dimethylsiloxane) (PDMS) of molecular mass 2400 Da and low polydispersity (1.09) were prepared using the Langmuir-Blodgett technique to investigate the effects of tertiary structure on the ion formation probability i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05ec961c3989a34b1be3b11dbca81521
https://doi.org/10.1021/ac070056c
https://doi.org/10.1021/ac070056c
Publikováno v:
Applied Surface Science. 253:3053-3056
Cobalt (Co)-induced crystalline silicon (Si) growth was investigated. The Co catalyst reacted to dc magnetron sputtered Si at 600 °C forming a Co silicide layer. The polycrystalline Si (poly-Si) was epitaxially grown above the Co silicide template,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::306f7c48e05401e023f77bef3ae31333
https://doi.org/10.1016/j.apsusc.2006.06.047
https://doi.org/10.1016/j.apsusc.2006.06.047
Publikováno v:
Applied Surface Science. 252:6605-6608
A static SIMS study was performed using poly(dimethyl siloxane) (PDMS) as a model system to investigate the effects of tertiary structure on the ion formation mechanism and ion formation probability of fragments in the high mass region (>1000 Da). PD
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::beb577a9e9631ba5ce1cd06244ac4c99
https://doi.org/10.1016/j.apsusc.2006.02.252
https://doi.org/10.1016/j.apsusc.2006.02.252
Autor:
Ingela Lanekoff, Selda Keskin, Andrew G. Ewing, Nicholas Winograd, Melissa Ortiz Delgado, Alan M. Piwowar, Jonathan J. Hue, Kan Shen
Publikováno v:
Surface and Interface Analysis. 45:302-304
Sample preparation continues to be a major challenge for secondary ion mass spectrometry studies of biological materials. Maintaining the native hydrated state of the material is important for preserving both chemical and spatial information. Here, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37e6f4b634b1fbcc1c14a8ccd6f864ce
https://doi.org/10.1002/sia.4882
https://doi.org/10.1002/sia.4882