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John Fletcher
Professor
Institutionen för kemi och ³¾´Ç±ô±ð°ì²â±ôä°ù²ú¾±´Ç±ô´Ç²µ¾±Om John Fletcher
Min forskning är fokuserad på utveckling och tillämpning av avbildande masspektrometri, särskilt för biologisk analys. Time-of-flight sekundär jon masspektrometri (ToF-SIMS) använder en fokuserad jonstråle för att frigöra atomer och molekyler från en yta. Dessa analyseras sedan med masspektrometri. Genom att flytta jonstrålen från pixel till pixel genereras en kemisk karta över provets yta. Tekniken tillåter nu kemisk specifik avbildning på en sub-cellulär nivå utan behov av markörer. I och med implementeringen av polyatomära jonkällor som C60 och på senare tid gasklusterjonstrålar erbjuds nu en väg till molekylärdjupprofilering (övervakning av kemiska signaler när provet långsamt urholkas av jonstrålen) och 3D molekylär avbildning.
Det finns en naturlig komplementaritet mellan ToF-SIMS och matris assisterad laser desorption jonisering (MALDI) avbildning och jag använder en kombination av dessa tekniker för att undersöka biologiska processer på en cellulär nivå.
Gruppmedlemmar:
Alfred Fransson
Simon Uzoni
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Simon Uzoni, Daniele Zanchin, Vasilis Chatzikyriakos, Noora Neittaanmäki, John S. Fletcher
Analytical Chemistry - 2025 -
Noora Neittaanmäki, Oscar Zaar, Kevin Sjogren Cehajic, Kelly Dimovska Nilsson, Dimitrios Katsarelias, Roger Olofsson Bagge, John Paoli, John S. Fletcher
Pigment Cell & Melanoma Research - 2024 -
Alfred Fransson, Kelly Dimovska Nilsson, Alex Henderson, Anne Farewell, John S. Fletcher
ANALYTICAL CHEMISTRY - 2024 -
Nicholas P. Lockyer, Satoka Aoyagi, John S. Fletcher, Ian S. Gilmore, Paul A.W. van der Heide, Katie L. Moore, Bonnie J. Tyler, Lu Tao Weng
Nature Reviews Methods Primers - 2024 -
Inci Barut, Xiulan He, Erol Sener, Sanna Sämfors, Andrew G Ewing, John S. Fletcher
Angewandte Chemie - International Edition - 2023 -
Inci Barut, Xiulan He, Erol Sener, Sanna Sämfors, Andrew G Ewing, John S. Fletcher
Annual Conference on Mass Spectrometry Imaging and Integrated Topics - 2023 -
Inci Barut, John S. Fletcher
Biointerphases - 2023 -
Kelly Dimovska Nilsson, Anthi Karagianni, Ibrahim Kaya, Marcus Henricsson, John S. Fletcher
Analytical and Bioanalytical Chemistry - 2021 -
John S. Fletcher, Sanna Sämfors, Josefine Vallin, Andreas Svanström, Julie Grantham
Analytical and Bioanalytical Chemistry - 2021 -
Kelly Dimovska Nilsson, Johan Grandén, Anne Farewell, John S. Fletcher
Surface and Interface Analysis - 2021 -
Kelly Dimovska Nilsson, Noora Neittaanmäki, Oscar Zaar, Tina B. Angerer, John Paoli, John S. Fletcher
Biointerphases - 2020 -
Sanna Sämfors, John S. Fletcher
Annual Review of Analytical Chemistry - 2020 -
Ibrahim Kaya, Eva Jennische, Stefan Lange, A. T. Baykal, P. Malmberg, John S. Fletcher
Journal of Neurochemistry - 2020 -
Mai H. Philipsen, Nhu TN Phan, John S. Fletcher, Andrew G Ewing
Biorxiv preprint - 2020 -
Ibrahim Kaya, Eva Jennische, Johan Dunevall, Stefan Lange, Andrew G Ewing, Per Malmberg, Ahmet Tarik Baykal, John S. Fletcher
ACS chemical neuroscience - 2020 -
Ibrahim Kaya, Sanna Sämfors, Malin Levin, Jan Borén, John S. Fletcher
Journal of the American Society for Mass Spectrometry - 2020 -
Mai H. Philipsen, Nhu TN Phan, John S. Fletcher, Andrew G Ewing
ACS Chemical Neuroscience - 2020 -
Kelly Dimovska Nilsson, Martin Palm, James Hood, Jake Sheriff, Anne Farewell, John S. Fletcher
Analytical chemistry - 2019 -
S. Samfors, Marcus Ståhlman, Martina Klevstig, Jan Borén, John S. Fletcher
International Journal of Mass Spectrometry - 2019 -
Marwa Munem, Oscar Zaar, Kelly Dimovska Nilsson, Noora Neittaanmäki, John Paoli, John S. Fletcher
Biointerphases - 2018 -
S. Samfors, Andrew G Ewing, John S. Fletcher
Rapid Communications in Mass Spectrometry - 2018 -
Ibrahim Kaya, S. M. Brülls, Johan Dunevall, Eva Jennische, Stefan Lange, J. Martensson, Andrew G Ewing, Per Malmberg, John S. Fletcher
Analytical Chemistry - 2018 -
Mai H. Philipsen, Nhu TN Phan, John S. Fletcher, Per Malmberg, Andrew G Ewing
Acs Chemical Neuroscience - 2018 -
T. P. Siegel, G. Hamm, J. Bunch, J. Cappell, John S. Fletcher, K. Schwamborn
Molecular Imaging and Biology - 2018 -
Patrick M. Wehrli, Tina B. Angerer, Anne Farewell, John S. Fletcher, Johan Gottfries
Analytical Chemistry - 2016 -
Tina B. Angerer, Ylva Magnusson, Göran Landberg, John S. Fletcher
Analytical Chemistry - 2016 -
Shusuke Nakano, Yuta Yokoyama, Satoka Aoyagi, Naoyuki Himi, John S. Fletcher, Nicholas P. Lockyer, Alex Henderson, John C. Vickerman
Biointerphases - 2016 -
Amir Saeid Mohammadi, Nhu TN Phan, John S. Fletcher, Andrew G Ewing
Analytical and Bioanalytical Chemistry - 2016 -
Jelena Lovric, Per Malmberg, Bengt R Johansson, John S. Fletcher, Andrew G Ewing
Analytical Chemistry - 2016 -
Neda Najafinobar, Lisa J. Mellander, Michael E. Kurczy, Johan Dunevall, Tina B. Angerer, John S. Fletcher, Ann-Sofie Cans
Scientific Reports - 2016 -
Tina B. Angerer, Amir Saeid Mohammadi, John S. Fletcher
Biointerphases - 2016 -
Y. Yokoyama, S. Aoyagi, M. Fujii, J. Matsuo, John S. Fletcher, N. P. Lockyer, J. C. Vickerman, M. K. Passarelli, R. Havelund, M. P. Seah
Analytical Chemistry - 2016 -
Nhu TN Phan, John S. Fletcher, Andrew G Ewing
Analytical Chemistry - 2015 -
Josefin Hall, U. Bexell, John S. Fletcher, Sead Canovic, Per Malmberg
Materials at High Temperatures - 2015 -
Tina B. Angerer, Masoumeh Dowlatshahi Pour, Per Malmberg, John S. Fletcher
Analytical Chemistry - 2015 -
P. Philipp, Tina B. Angerer, Sanna Sämfors, P. Blenkinsopp, John S. Fletcher, T. Wirtz
Analytical Chemistry - 2015 -
John S. Fletcher
Bioanalysis - 2015 -
A. G. Shard, R. Havelund, S. J. Spencer, I. S. Gilmore, M. R. Alexander, Tina B. Angerer, S. Aoyagi, J. P. Barnes, A. Benayad, A. Bernasik, G. Ceccone, J. D. P. Counsell, C. Deeks, John S. Fletcher, D. J. Graham, C. Heuser, T. G. Lee, C. Marie, M. M. Marzec, G. Mishra, D. Rading, O. Renault, D. J. Scurr, H. K. Shon, V. Spampinato, H. Tian, F. Y. Wang, N. Winograd, K. Wu, A. Wucher, Y. F. Zhou, Z. H. Zhu
Journal of Physical Chemistry B - 2015 -
John S. Fletcher
Biointerphases - 2015 -
Tina B. Angerer, Paul Blenkinsopp, John S. Fletcher
International Journal of Mass Spectrometry - 2015 -
Nhu TN Phan, John S. Fletcher, Andrew G Ewing
Reference Module in Chemistry, Molecular 91̽»¨s and Chemical Engineering - 2014 -
Hua Tian, John S. Fletcher, Raphael Thuret, Alex Henderson, Nancy Papalopulu, John Vickerman, Nicholas Lockyer
Journal of Lipid Research - 2014 -
Nhu TN Phan, John S. Fletcher, Peter Sjövall, Andrew G Ewing
Surface and Interface Analysis: 19th International Conference on Secondary Ion Mass Spectrometry (SIMS) - 2014 -
Jelena Lovric, Jacqueline Keighron, Tina B. Angerer, Xianchan Li, Per Malmberg, John S. Fletcher, Andrew G Ewing
Surface and Interface Analysis: 19th International Conference on Secondary Ion Mass Spectrometry (SIMS) - 2014 -
Amir Saeid Mohammadi, John S. Fletcher, Per Malmberg, Andrew G Ewing
Surface and Interface Analysis: 19th International Conference on Secondary Ion Mass Spectrometry (SIMS) - 2014 -
Patrick M. Wehrli, Erika Lindberg, Tina B. Angerer, Agnes E Wold, Johan Gottfries, John S. Fletcher
Surface and Interface Analysis - 2014 -
S. Sheraz, A. Barber, I. B. Razo, John S. Fletcher, N. P. Lockyer, J. C. Vickerman
Surface and Interface Analysis - 2014 -
Tina B. Angerer, John S. Fletcher
Surface and Interface Analysis - 2014 -
T. Kawashima, T. Kurosawa, S. Aoyagi, S. Sheraz, John S. Fletcher, M. Futigami, N. P. Lockyer, J. C. Vickerman
Surface and Interface Analysis - 2014 -
Jörg Hanrieder, Per Malmberg, Olle R Lindberg, John S. Fletcher, Andrew G Ewing
Analytical Chemistry - 2013 -
Edward G. Chadwick, N. V. V. Mogili, Colm O'Dwyer, Jimmy D. Moore, John S. Fletcher, Fathima Laffir, Gordon Armstrong, David A. Tanner
RSC Advances - 2013 -
John S. Fletcher, Christopher Szakal
ToF-SIMS: Materials Analysis by Mass Spectrometry, 2nd Ed. - 2013 -
Satoka Aoyagi, John S. Fletcher, Sadia Sheraz, Tomoko Kawashima, Irma Berrueta Razo, Alex Henderson, Nicholas P Lockyer, John C Vickerman
Analytical and Bioanalytical Chemistry - 2013 -
Sadia Sheraz, Andrew Barber, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Analytical Chemistry - 2013 -
John S. Fletcher, Helen L Kotze, Emily G. Armitage, Nicholas P Lockyer, John C. Vickerman
Metabolomics - 2013 -
Helen L. Kotze, Emily G. Armitage, John S. Fletcher, Alex Henderson, Kaye J. Williams, Nicholas P. Lockyer, John C. Vickerman
Surface and Interface Analysis - 2013 -
Emily G Armitage, Helen L Kotze, John S. Fletcher, Kaye J Williams, Nicholas P. Lockyer, John C Vickerman
Surface and Interface Analysis - 2013 -
Jimmy D. Moore, Alex Henderson, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Surface and Interface Analysis - 2013 -
John S. Fletcher, Sadia Rabbani, Andrew M. Barber, Nicholas P. Locker, John C. Vickerman
Surface and Interface Analysis - 2013 -
John S. Fletcher, John C Vickerman
Analytical chemistry - 2013 -
Paul Bassan, Joe Lee, Ashwin Sachdeva, Juliana Pissardini, Konrad M Dorling, John S. Fletcher, Alex Henderson, Peter Gardner
The Analyst - 2013 -
Xavier A Conlan, John S. Fletcher, Nicholas P Lockyer, John C Vickerman
Journal of Physical Chemistry C - 2012 -
John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Surface and Interface Analysis - 2011 -
Sadia Rabbani, Andrew M. Barber, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Analytical Chemistry - 2011 -
John S. Fletcher, Sadia Rabbani, Alex Henderson, Nicholas P. Lockyer, John C. Vickerman
Rapid Communications in Mass Spectrometry - 2011 -
Rowland Hill, Paul Blenkinsopp, Stephen Thompson, John Vickerman, John S. Fletcher
Surface and Interface Analysis - 2011 -
John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Mass Spectrometry Reviews - 2011 -
S. Rabbani, John S. Fletcher, N. P. Lockyer, J. C. Vickerman
Surface and Interface Analysis - 2011 -
Alan M. Piwowar, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Surface and Interface Analysis - 2011 -
Alan M. Piwowar, John S. Fletcher, Nicholas Lockyer, John Vickerman
Surface and Interface Analysis - 2011 -
John S. Fletcher, John C Vickerman, Nicholas Winograd
Current opinion in chemical biology - 2011 -
John S. Fletcher
Detection of Biological Agents For the Prevention of Bioterrorism - 2010 -
John S. Fletcher, John C. Vickerman
Analytical and Bioanalytical Chemistry - 2010 -
Alan M. Piwowar, John S. Fletcher, Jeanette Kordys, Nicholas P. Lockyer, Nicholas Winograd, John C. Vickerman
Analytical Chemistry - 2010 -
Ingela Lanekoff, Michael E. Kurczy, Rowland Hill, John S. Fletcher, John C Vickerman, Nick Winograd, Peter Sjövall, Andrew G Ewing
Analytical chemistry - 2010 -
Seetharaman Vaidyanathan, John S. Fletcher, Roger M. Jarvis, Alex Henderson, Nicholas P. Lockyer, Royston Goodacre, John C. Vickerman
Analyst - 2009 -
Alex Henderson, John S. Fletcher, John C. Vickerman
Surface and Interface Analysis - 2009 -
John S. Fletcher
Analyst - 2009 -
Conlan Xavier, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Journal of Physical Chemistry C - 2009 -
John S. Fletcher, Sadia Rabbani, Alex Henderson, Paul Blenkinsopp, Steve P. Thompson, Nicholas P. Lockyer, John C. Vickerman
Analytical Chemistry - 2008 -
John S. Fletcher, Alex Henderson, Gregory X. Biddulph, Seetharaman Vaidyanathan, Nicholas P. Lockyer, John C. Vickerman
Applied Surface 91̽»¨ - 2008 -
Seetharaman Vaidyanathan, John S. Fletcher, Alex Henderson, Nicholas P. Lockyer, John C. Vickerman
Applied Surface 91̽»¨ - 2008 -
Seetharaman Vaidyanathan, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Applied Surface 91̽»¨ - 2008 -
Jeanette Kordys, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Applied Surface 91̽»¨ - 2008 -
Seetharaman Vaidyanathan, John S. Fletcher, Roy Goodacre, Nicholas P. Lockyer, Jason Micklefield, John C. Vickerman
Analytical Chemistry - 2008 -
Gregory X. Biddulph, Alan M. Piwowar, John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Analytical Chemistry - 2007 -
John S. Fletcher, Nicholas P. Lockyer, Seetharaman Vaidyanathan, John C. Vickerman
Analytical Chemistry - 2007 -
E. A. Jones, John S. Fletcher, C. E. Thompson, D. A. Jackson, N. P. Lockyer, J. C. Vickerman
Applied Surface 91̽»¨ - 2006 -
John S. Fletcher, Nicholas P. Lockyer, John C. Vickerman
Surface and Interface Analysis - 2006 -
John S. Fletcher, Xavier A. Conlan, Nicholas P. Lockyer, John C. Vickerman
Applied Surface 91̽»¨ - 2006 -
John S. Fletcher, A. Henderson, R. M. Jarvis, N. P. Lockyer, J. C. Vickerman, R. Goodacre
Applied Surface 91̽»¨ - 2006 -
John S. Fletcher, X. A. Conlan, E. A. Jones, G. Biddulph, N. P. Lockyer, J. C. Vickerman
Analytical Chemistry - 2006 -
M. J. Baker, John S. Fletcher, H. Jungnickel, N. P. Lockyer, J. C. Vickerman
Applied Surface 91̽»¨ - 2006 -
C. E. Thompson, J. Ellis, John S. Fletcher, R. Goodacre, A. Henderson, N. P. Lockyer, J. C. Vickerman
Applied Surface 91̽»¨ - 2006 -
Charlotte E. Thompson, Joanne Ellis, John S. Fletcher, Goodacre Roy, Alex Henderson, Nicholas P. Lockyer, John C. Vickerman
Applied Surface 91̽»¨ - 2006 -
John S. Fletcher, Alex Henderson, Andrew B. Horn, John C. Vickerman
Journal of Physical Chemistry B - 2004 -
John S. Fletcher, John C. Vickerman
Applied Surface 91̽»¨ - 2004 -
SB Couling, John S. Fletcher, AB Horn, DA Newnham, RA McPheat, RG Williams
Physical Chemistry Chemical Physics - PCCP - 2003 -
SB Couling, KL Nash, John S. Fletcher, A Henderson, JC Vickerman, AB Horn
Journal of the American Chemical Society - 2003 -
KL Nash, RM Sayer, SB Couling, John S. Fletcher, A Henderson, JC Vickerman, AB Horn
Physical Chemistry Chemical Physics - PCCP - 2003