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<!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} </style> <![endif]--> <meta name=Template content="Macintosh HD:Word Processing 1.2:Microsoft Office 98:Templates:Web Pages:Blank Web Page"> <!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1027"/> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1"/> </o:shapelayout></xml><![endif]--> </head> <body bgcolor=white lang=EN-US link=blue vlink=purple style='tab-interval:.5in'> <div class=WordSection1> <h1><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Regent's Professor J.C.H. Spence<o:p></o:p></span></h1> <div class=MsoNormal align=center style='margin:0in;margin-bottom:.0001pt; text-align:center'><span style='mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"'> <hr size=2 width="100%" align=center> </span></div> <p>This is the web page of Professor&nbsp;J.C.H. Spence in the Physics Department at Arizona State University, U.S.A. Research is conducted in our ASU lab,<span style="mso-spacerun:yes">  </span>at LBNL, Berkeley, and at LCLS at SLAC on atomic structure and processes in organic and inorganic matter. It is funded by NSF, DOE, ARO and LBL. Updated 3/11.</p> <p>His faculty web page can be found at<span style="mso-spacerun:yes">    </span><a href="http://physics.asu.edu/people/faculty">http://physics.asu.edu/people/faculty</a></p> <p>Our research group web page is http://spencelab.la.asu.edu/</p> <p>Our addresses are as follows: </p> <ol start=1 type=1> <li class=MsoNormal style='mso-list:l2 level1 lfo1;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>J. Spence, <a href="http://www.asu.edu/clas/dopa/dopa.html">Physics</a>, <a href="http://www.asu.edu/">ASU</a>, Tempe, AZ. 85287-1504, USA. e-mail <a href="mailto:spence@asu.edu">spence@asu.edu</a><o:p></o:p></span></li> </ol> <p style='margin-left:.5in'>Tel. USA 602-965 6486. Lab: 602-965 2535, Fax USA 602-965 7954</p> <ol start=2 type=1> <li class=MsoNormal style='mso-list:l3 level1 lfo2;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>At LBL: Lawrence Berkeley Lab, 1 Cyclotron Rd.,4-102A, Berkeley, Ca. 94720<o:p></o:p></span></li> </ol> <p style='margin-left:.5in'>Tel: 510-486-7775, 510-486-4067. Fax 510-486-7696.</p> <ol start=3 type=1> <li class=MsoNormal style='mso-list:l0 level1 lfo3;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Dr. N. Jaing. nan.jiang@asu.edu&nbsp;<o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l0 level1 lfo3;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Dr. U. Weierstall uwe.weierstall@asu.edu&nbsp;&nbsp;<o:p></o:p></span></li> </ol> <p>John<span style="mso-spacerun:yes">  </span>Spence completed a PhD in Physics at Melbourne University in 1972,<span style="mso-spacerun:yes">  </span>followed by a postdoc at Oxford UK. He is a Fellow of the American Association for the Advancement of Science,<span style="mso-spacerun:yes">  </span>the American Physical Society, the Microscopy Society of American, of the Institute of Physics (UK), and of Churchill College Cambridge, UK. He received the &nbsp;MSA&nbsp;Distinguished Scientist &nbsp;award&nbsp; for 2006 and the Buerger Award of the American Crystallographic Society in 2012. He was Co-Editor of Acta Cryst (A) for North America (Diffraction Physics, 1990-2000), and served recently on<span style="mso-spacerun:yes">  </span>the Scientific Advisory Committee for the Advanced Light Source at LBNL. He is a member of the DOE&nbsp; BESAC Committee, and of the Molecular Foundry Advisory Board at Lawrence Berkeley Laboratory, and was a <span style='font-family:"Times New Roman"'>Member of US National Committee for Crystallography , </span>Recipient of the Burton Medal of the Microscopy Society of America and of a Humbolt Senior Scientist award. He is an editorial board member for the Oxford University Press series on Mesoscopic Physics, of Reports on Progress in Physics, of Ultramicroscopy and J. Micros. He was chair of the International Union of Crystallography Commission on Electron Diffraction, a member of the IUCr commission on Charge, Spin and Momentum densities and was chair of the Gordon Conference on Charge, Spin and Momentum densities for 2004, and recipient of the Frontiers In Electron Microscopy Lectureship award for 2003 and<span style="mso-spacerun:yes">  </span>FAST Lecturer at Cornell in 2005. A Festschrift volume of Ultramic appeared in July 2011.</p> <p>Some recent papers</p> <p><span style='font-family:"Times New Roman"'>0.<span style="mso-spacerun:yes">  </span>&quot;Femtosecond protein nanodiffraction using an X-ray laser&quot;<span style="mso-spacerun:yes">  </span>H. Chapman, P. Fromme........J.C.H.Spence.<span style="mso-spacerun:yes">  </span>Nature 470, 73-77. (2011)<o:p></o:p></span></p> <p>1. On Jia et al seeing Oxygen in Superconductors. Science 03. <a href="http://www.public.asu.edu/%7Ejspence/JCHS_Science_03.pdf">http://www.public.asu.edu/~jspence/JCHS_Science_03.pdf</a></p> <p>2. On Kiesel et al - the electron antibunching effect observed. Nature 02 <a href="http://www.public.asu.edu/%7Ejspence/N&amp;V_Antibunch_JCHS_02.pdf">http://www.public.asu.edu/~jspence/N&amp;V_Antibunch_JCHS_02.pdf</a></p> <p>3. On X-ray holograms of atoms...Nature 01 . <a href="http://www.public.asu.edu/%7Ejspence/JCHS_Science_03.pdf">http://www.public.asu.edu/~jspence/N&amp;V_SpenceNature'01.pdf</a></p> <p>4. Electron-excited fluorescence makes hologram of atomic structure. J. Spence et al. PRL 01 <a href="http://www.public.asu.edu/%7Ejspence/PRLSpenceKoch01.pdf">http://www.public.asu.edu/~jspence/PRLSpenceKoch01.pdf</a></p> <p>5. &quot;Imaging&quot; of the chemical bonding in copper oxide. J. Zuo et al. Nature 98. <a href="http://www.public.asu.edu/%7Ejspence/NatureBonding.pdf">http://www.public.asu.edu/~jspence/NatureBonding.pdf</a></p> <p>6. &quot;Direct observation of dislocation kinks and their motion&quot;. H. Kolar et al. PRL 96. <a href="http://www.public.asu.edu/%7Ejspence/KolarPRLKinks.pdf">http://www.public.asu.edu/~jspence/KolarPRLKinks.pdf</a></p> <p>7. &quot;<span style='font-family:"Times New Roman"'>Single Molecule Diffraction&quot;. J.C.H.Spence and B.Doak. Physical Review Letters. 92, 198102 (2004)<o:p></o:p></span></p> <p><span style='font-family:"Times New Roman"'>8. &quot;Motion of laser-aligned hydrated proteins in a beam&quot;<span style="mso-spacerun:yes">  </span>D. Starodub et al.&nbsp;J. Chem Phys 123 &nbsp;244304 (2005) <o:p></o:p></span></p> <p><span style='font-family:"Times New Roman"'>9. &quot;Femtosecond Protein Nanocrystallography - data analysis methods&quot;.<span style="mso-spacerun:yes">  </span>R. Kirian et al<span style="mso-spacerun:yes">  </span>Optics Express 18, 5713 (2010).<o:p></o:p></span></p> <p><span style='font-family:"Times New Roman"'>Powerpoints from the recent workshop on <b style='mso-bidi-font-weight:normal'>&quot;Biology with X-ray lasers&quot;</b> at LBNL can be found at<span style="mso-spacerun:yes">  </span><a href="https://sites.google.com/a/lbl.gov/biology-with-fels/">https://sites.google.com/a/lbl.gov/biology-with-fels/</a><o:p></o:p></span></p> <p><b>Students </b>in this group work toward Physics, Materials Science or Biophysics MSc and PhD. degrees under the supervision of Prof. Spence, in the following areas: </p> <ul type=disc> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Surface science <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Electron holography <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>STM <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Atomic resolution transmission electron microscopy. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>CBED (Electron microdiffraction) <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>ALCHEMI - electron channelling effects on characteristic Xray production for atomic site identification. For &quot;Alchemi as Holography&quot; see PRL, 86, p. 5510 (2001) <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Interfaces in materials <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Coherent Bremstrahlung. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Energy loss spectroscopy. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Defects in semiconductors and ceramics. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Dislocation core structure, kink dynamics and fracture. Ab-initio molecular dynamics. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Atomic mechanisms in phase transitions in solids. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>X-ray imaging (at the ALS in Berkeley and LCLS at Stanford). <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Imaging of molecules at sub-nanometer resolution. <o:p></o:p></span></li> <li class=MsoNormal style='mso-list:l1 level1 lfo4;tab-stops:list .5in'><span style='mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman"'>Biophysics. &nbsp;Solving protein structures by spraying<span style="mso-spacerun:yes">  </span>hydrated membrane protein nanocrystals (and viruses) across the LCLS hard X-ray laser.<o:p></o:p></span></li> </ul> <p>New electron optical instruments are also under development such as our Scanning Atom Probe, the Point Reflection Electron Microscope, the laser aligned, hydrated protein beam, hydrated sample injectors for the LCLS X-ray laser near Stanford (in collaboration with B. Doak and U. Weierstall)<span style="mso-spacerun:yes">  </span>and Microdiffraction RHEED. </p> <p>Summaries of some of our work can be found in the books <i>&quot;Experimental HREM&quot;</i> (J. Spence, Oxford Univ. Press, 2003, 3rd edition) and <i>&quot;Electron Microdiffraction&quot;</i> (J. Spence and J. Zuo, Plenum, 1992). &nbsp;The book &quot;Science of Microscopy&quot; (2 Vols, Eds P. Hawkes and J.C.H.Spence) , Springer, 2007, &nbsp;reviews all forms of modern microscopy. </p> <p>Students or postdoctorals interested in <a href="http://www.public.asu.edu/%7Ejspence/visiting.html">visiting</a> should contact us through Internet. </p> <p>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ <br> Some recent papers (updated March 2011.)</p> <p><b>Condensed Matter, Ab-initio Quantum Molec Dynamics for cracks, dislocations, kinks.<br> <i>We predict the mechanical properties (fracture toughness, ductility) of perfect crystals using atomistic quantum mechanical calculations. <br> </i></b>25. &quot;Electronic structure of the unreconstructed 30 partial dislocation in silicon&quot;, J.E. Northrup, M.L. Cohen, J.R. Chelikowsky, J. Spence and A. Olsen, Phys. Rev. B24, 4623-4628 (1981).<br> <span style='font-family:"Times New Roman"'>201 Atomistics and mechanical properties of silicon. J.C.Spence. Acta Mat et Met. (1999). 47, p. 4153.</span><br> 81. &quot;A Kink Mechanism for Formation of the Si(111)-(2x1) Reconstructed Surface&quot;, J. Spence. Phys. Rev. B38, p. 12672-12674 (1988) <br> 105.&nbsp; &quot;The influence of internal surfaces on the (2x1) shuffle and glide cleavage reconstructions&quot;&nbsp; Y.M.Huang, J.C.H.Spence, O. Sankey, and G. Adams. Surface Science&nbsp; (1991) 256, p.344.&nbsp; URI <br> 146. &quot;Dislocation kink motion in silicon&quot;. Y. M. Huang, J.C.H.Spence and O. Sankey. Phys. Rev. Letts. 74, p. 3392 (1995) . <br> 120.&nbsp; &quot;Lattice trapping and surface reconstruction for silicon cleavage on (111). Ab- initio quantum molecular dynamics calculations&quot;. J. Spence, Y. Huang and O.Sankey. Acta Met. 41, p. 2815 (1993). <br> 46. &quot;High energy transmission electron diffraction and imaging studies of the silicon surface&quot;, J.C.H.Spence, Ultramic., 11, 117 (1983).<br> 139&nbsp; &quot;The effect of impurities on the ideal tensile strength of silicon&quot; Y. Huang, J. Spence and O. F Sankey, Phil Mag. 1994. 70, p.53. <br> <span style='font-family:"Times New Roman"'>120. &quot;Lattice trapping and surface reconstruction for silicon cleavage on (111). Ab- initio quantum molecular dynamics calculations&quot;. J. Spence, Y. Huang and O.Sankey. Acta Met. 41, p. 2815 (1993)<o:p></o:p></span></p> <p class=MsoNormal><b><span style='mso-bidi-font-family:"Times New Roman"'>Biophysics _Protein structure and dynamics by femtosecond X-ray diffraction from a liquid &nbsp;jet of hydrated molecules (at the LCLS XFEL).<span style="mso-spacerun:yes">  </span>Jet development.<br> <i style='mso-bidi-font-style:normal'>We form molecular movies (eg of photosynthesis with P. Fromme) by optical laser excitation followed by snapshot hard X-ray laser diffraction.</i><br> &quot;</span></b><span style='font-family:"Times New Roman"'>Single Molecule Diffraction&quot;. J.C.H.Spence and B.Doak. Physical Review Letters. 92, 198102</span><b><span style='mso-bidi-font-family:"Times New Roman"'><br> &quot;</span></b><span style='mso-bidi-font-family:"Times New Roman"'>Diffraction and imaging from a beam of laser-aligned proteins&quot;. J.C.H.Spence et al.&nbsp; Acta Cryst A61, p.237. (2005) see also<span style="mso-spacerun:yes">  </span>J. Chem Phys. 123, 244304 (2005).<br> 372 &quot;Gas dynamic virtual nozzle for generation of microscopic droplet beams&quot;. D. De Ponte et al. J. Phys. D. Appl Phys. 41, 195505 (2008)<br> 401 </span><span style='font-family:"Times New Roman"'>&quot;Femtosecond protein nanocrystallography - data analysis methods&quot;. R. Kirian et al<span style="mso-spacerun:yes">  </span>Optics Express<span style="mso-spacerun:yes">  </span>18, p.5713 (2010).<br> 408 &quot;Femtosecond protein nanocrystallography&quot;.<span style="mso-spacerun:yes">  </span>H. Chapman, P. Fromme...... J.C.H.Spence. Nature 470, p73-77<span style="mso-spacerun:yes">  </span>(2011).<br> 409<span style="mso-spacerun:yes">  </span>&quot;Single mimivirus particles imaged on-the-fly with an X-ray laser&quot; M. Seibert....J. Hajdu. Nature 470, p. 78 (2011)<br> 412<span style="mso-spacerun:yes">  </span>&quot;Phasing of coherent femtosecond X-ray diffraction from size-varying nanocrystals&quot;. J.C.H.Spence et al<span style="mso-spacerun:yes">  </span>Optics Express 19, 2866-2873 (2010)<br> 425<span style="mso-spacerun:yes">  </span>&quot;Signal , noise and resolution<span style="mso-spacerun:yes">  </span>in correlated flucuations from snapshot SAXS&quot; R.Kirian et al. Phys Rev E (2011) submitted.<o:p></o:p></span></p> <p><b><span style='font-family:"Times New Roman"'>Ordering in Glasses.<br> <i>&quot; The most important unsolved problem in Condensed Matter Physics&quot; (P. Anderson).<br> </i></span></b><span style='font-family:"Times New Roman"'>261&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;Long range structural fluctuations in a CaO-Al<sub>2</sub>O<sub>3</sub>-2SiO<sub>2</sub> glass by spatially resolved near-edge spectroscopy. N. Jiang, J. Qiu and J.C.H.Spence. Phys Rev B66, p.054203 (2002).<o:p></o:p></span></p> <p><b><span style='font-family:"Times New Roman"'>Organic materials,<span style="mso-spacerun:yes">  </span>Cryo-electronmicroscopy.<br> </span></b><span style='font-family:"Times New Roman"'>288 Three-dimensional diffractive imaging for crystalline monolayers with one-dimensional compact support. J.Spence, U. Weierstall, K. Downing and R. M. Glaeser. J. Struct. Biol. 144, 209. 2003.</span><br> <span style='font-family:"Times New Roman"'>262 &nbsp;&nbsp;Kinematic and dynamical CBED for solving thin organic films at low temperature; experimental tests with anthracene. J.S. Wu and J.C.H. Spence. Acta Cryst A58, p.580. (2002)<br> 399<span style="mso-spacerun:yes">  </span>&quot;Design of an electron microscope phase plate using a focussed continuous-wave laser&quot;. H. Muller et al. New J Phys. 12, 073011 (2010).<o:p></o:p></span></p> <p><b>Bonding in solids. Electron Microdiffraction. <br> <i>We develop new methods for imaging the chemical bonds which glue atoms together in solids, and test many-electron theoretical approximations for bonding.<br> </i></b>177.&quot;Charge density of MgO: Implications of precise new measurements for theory&quot;. J.M.Zuo, M. O'Keeffe, P. Rez, J. Spence. Phys Rev Letts.&nbsp; 78, p. 4777-4780. (1998)<br> 174 &quot;Direct inversion of dynamical electron diffraction patterns to structure factors&quot;.&nbsp; J. Spence. Acta Cryst. A. 1998. A54&nbsp; p. 7 - 18.<br> 153 &quot;Effect of Mn doping on chanrge density in <span style='font-family: "Times New Roman"'>g</span>-TiAl by quantitative CBED&quot; R. Holmestad, J. Zuo, J. Spence R Hoier and Z. Horita. Philos. Mag. (1995) 72, p. 579&nbsp;<br> 28 &quot;A simple method for determining structure factor phases&nbsp; and crystal polarity using electron diffraction&quot;, J. Tafto/ and J. Spence, J. Appl.&nbsp; Cryst., 15, 60-64 (1982), <br> 82. &quot;Bonding in GaAs&quot;, J.M. Zuo, J. Spence and M. O'Keefe. Phys. Rev.&nbsp; Letts Vol. 61, p353 (1988) <br> 90. &quot;Accurate structure-factor phase determination by electron diffraction in acentric crystals&quot;, J.M. Zuo, J. Spence and R. Hoier.&nbsp; Phys.&nbsp; Rev.&nbsp; Letts. (1989) 62 p. 547.<br> 103&nbsp; &quot;Charge ordering in magnetite at low temperatures&quot;. J.M.Zuo, J.C.H. Spence and&nbsp; W.Petusky. Phys. Rev. B.42,&nbsp; p.8451&nbsp; (1990).&nbsp;<br> <span style='font-family:"Times New Roman"'>218&nbsp; &quot;On the measurement of dislocation core periods by nanodiffraction&quot;. J.C.H.Spence and C. Koch. Phil Mag. B.81, 11,pp.1701-1711(2001). (Bourret Festschrift).</span><br> 104. <a href="http://www.public.asu.edu/%7Ejspence/CopperOxideBondPix.pdf">Bonding in copper oxide</a> - direct observation of chemical bonds.<span style='font-family:"Times New Roman"'>&quot;Direct Observation of d holes and Cu-Cu bonding in Cu2O&quot;.</span> J. Zuo, Y.Kim, M. O'Keeffe, J. Spence. Nature Vol 401, p.49, (1999). 226 &quot;On closed shell interactions, polar covalences, d shell holes, and direct images of orbitals: the case of cuprite&quot;. J.Zuo, M.O Keeffe, M.Kim, J.Spence. Angew Chem Int Ed 2000, 39, p. 3791. See&nbsp; <a href="http://www.public.asu.edu/~jmzuo/pics/pics.htm">http://www.public.asu.edu/~jmzuo/pics/pics.htm</a>. For images, click below. <a href="http://www.public.asu.edu/%7Ejspence/CopperOxideBondPix.pdf">Nature99CopperOxideBonds</a> <span style='font-family:"Times New Roman"'><o:p></o:p></span></p> <p><b><span style='font-family:"Times New Roman"'>Solving crystal structures by electron microdiffraction.</span></b><span style='font-family:"Times New Roman"'><br> 387 &quot;The kinematic convergent beam method for solving nanocrystal structures&quot;. J. McKeown and J.C.H.Spence.<b> </b>J. Appl Phys. 106, 074309 <b><span style="mso-spacerun:yes"> </span></b>(2009)<o:p></o:p></span></p> <p><b>Coherent Bremsstrahlung <br> <i>Charged particles buzzing through crystals generate tunable coherent X-ray with the buzz frequency.<br> </i></b>68. &quot;Pendellosung Radiation and Coherent Bremsstrahlung&quot;, J.C.H. Spence and G.&nbsp; Reese, Acta Cryst. (P. Ewald Festschrift) 1986 Acta Cryst. A42, p. 577-585, NSF </p> <p><b>Electron energy -loss spectroscopy.<br> <i>Provides similar information to soft-Xray absorption spectra, but with nanometer spatial resolution.<br> </i></b>2. &quot;Observation of double plasmon excitation in aluminium&quot;, J.C.H. Spence and A.E.C. Spargo, Phys. Rev. Letters 26, 985 (1971). <br> 70. &quot;The electron energy loss near edge structure of Be2C&quot;, M.M. Disko, J.C.H. Spence, O.F. Sankey and D. Saldin. Phys. Rev. B. (1986) B33, p. 5642-51, ARO 83. <br> 33. &quot;STEM Microanalysis by Transmission Electron Energy Loss Spectroscopy in Crystals&quot;, J.C.H. Spence and J. Lynch, Ultramicroscopy, 9, 267 (1982), ARO. <br> 60. &quot;The Structural Sensitivity of Electron Loss Near Edge Structure&quot;, J.C.H. Spence, Ultramicroscopy (1985), 18, p. 165-172, ARO 83. </p> <p><b>Channeling effects on secondary processes, internal source holography <br> <i>Electron standing waves in crystals can be used to locate foreign dopant atoms.<br> </i></b>47. &quot;ALCHEMI - a new technique for locating atoms in small crystals&quot;, J.C.H Spence and J. Tafto, J. Micros, 130, 147 (1983), NSF 80. <br> 79. &quot;Adatom site determination using channelling effects in RHEED on X-ray and Auger electron production&quot;, J.C.H. Spence and Y. Kim (1988).&nbsp; in &quot;Reflection High Energy Electron Diffraction and Reflection Electron Imaging of Surfaces&quot;&nbsp; Eds. P.K. Larsen and P.J. Dobson, p. 117-128 Plenum1988 NSF 85. <br> &quot;Atomic String Holography&quot;. J. Spence and C. Koch. Phys. Rev. Letts. 86, p. 5510 (2001).</p> <p><b>In-situ observation of STM operation in a TEM <br> <i>Manipulate atoms by STM and watch simultaneously by TEM<br> </i></b>124&nbsp; Investigation of STM image artifacts by in-situ reflection electron microscopy. W. Lo and J. Spence. Ultramic. (1992). 48, p.433. </p> <p><b>Atomic-scale imaging of defects, ordering. High Tc, Dislocation kink dynamics. <br> <i>The atomic structure of defects controls many materials properties.<br> </i></b>17. &quot;Distinguishing dissociated Shuffle and Glide set dislocations by high resolution electron microscopy&quot;, A. Olsen and J.C.H. Spence, Phil. Mag. A43, 945-965 (1980) <br> 154 &quot;Observation of moving dislocation kinks and pinning&quot;. H. Kolar, J. Spence and H. Alexander. Phys. Rev. Letts. 77, p. 4031-4034 (1996) . &nbsp;<a href="http://www.public.asu.edu/%7Ejspence/KinksJdePh.pdf">KinkImages</a> <br> 74. &quot;Microstructure, Oxygen Ordering and planar defects in in high Tc superconductor Ba2YCu3O6.9&quot;, A. Ourmazd, J.A. Rentschler, J.C. Spence, M. O'Keeffe, R.J. Graham, D.W. Johnson and W.W. Rhodes.&nbsp; Nature (1987) 327, p. 308, NSF 85. <br> 9. &quot;Lattice imaging in STEM&quot;, J.C.H. Spence ,J.M. Cowley, Optik, 50, 129 (1978). <br> 170 &quot;The enhancement of electron microscope resolution by use of atomic focusers&quot;. J. M. Cowley, J. Spence and V.V. Smirnov. Ultramic. 68, p. 135 (1997).<span style="mso-spacerun:yes">  </span><br> 200. Electron <span style='font-family:"Times New Roman"'>nanodiffraction for dislocation kinks and core reconstruction&quot;. C. Koch, J.Spence et al.. J. Phys (Cond. Matter) 12, p. 1-9 (2000).<br> 281 &quot;Oxygen in crystals - seeing is believing&quot;. Science. 299, p. 839 (2003) &quot;Perspective&quot;.<o:p></o:p></span></p> <p><b>Field emission nanotips, electron antibunching, low energy electron holography in biology, photofield emission. <br> </b>131 &quot;Brightness measurement of nanometer sized field emission electron sources&quot;. W. Qian, M. Scheinfein and J. Spence. J. Appl. Phys. 73, 7041 (1993).<br> 138 &quot;Electron source information from Fresnel fringes in field emission point projection electron microscopy&quot; J. Spence= et al.. J. Vac Sci. A12. p.542 (1994)<br> 122 Aberrations of emission cathodes: Nanometer diameter field emission electron&nbsp;sources. M. Scheinfein, W, Qian and J, Spence. J. Appl. Phys. 73 (1993) p.2057<br> 187<span style="mso-spacerun:yes">  </span>&quot;Imaging of Tobacco Mosaic Virus at 40 volts by electron holography&quot;. U. Weierstall and J. Spence. Micron 30, p.335<span style="mso-spacerun:yes">  </span>(1999). ARO. <br> 232 &quot;Electron Holography of field-emitting carbon nanotubes&quot;. Cumings, Zettl, McCartney, Spence. Phys Rev Letts. 88, p.056804 (2002)<br> <span style='font-family:"Times New Roman"'>266&nbsp; &quot;Spaced out electrons&quot;. Electron antibunching. News and Views. Nature 418, p. 377 2002. J.C.H. Spence.<br> </span>396 <span style='font-family:"Times New Roman"'>&quot;A coherent photofield electron source for fast diffractive and point-projection imaging&quot;. J.C.H. Spence, T. Vecchione and U. Weierstall. Phil Mag. Accepted (2010)<o:p></o:p></span></p> <p><b>New electron detectors.<br> </b>86. &quot;A large dynamic range parallel detection CCD system for electron diffraction and&nbsp; imaging&quot;, J.C.H. Spence and J.M. Zuo, J. Sci. Instr. 59(9), p. 2102-2105 (1988)&nbsp;</p> <p><b>Cathodolluminescence in STEM <br> <i>Atomic-level spatial resolution with the energy resolution of optical spectroscopy.<br> </i></b>54. &quot;Cathodoluminescence and polarization studies of dislocations in diamond&quot;, N. Yamamoto, J.C.H. Spence and D. Fathy, Phil. Mag B49, p. 609-629 (1984). </p> <p><b>Electron holography. Ferroelectrics <br> <i>Electron holography allows one to map out electric and magnetic fields in solids.<br> </i></b>160 &quot;Theory and principles of electron holography&quot;&nbsp; J. Cowley, J. Spence. in : Intro to electron holography. Eds Allard et al.&nbsp; Plenum (NY) 1996 <br> 129&nbsp; &quot;Electron holographic study of ferroelectric domain walls&quot; J.C.H.Spence, J.M. Cowley and J.M. Zuo. Appl. Phys. Letts. 62, p. 2446 (1993) <br> 232 &quot;Electron holography of field-emitting carbon nanotubes&quot;. Cummings, Zettl, McCartney, Spence. Phys. Rev. Letts. 88, p.056804 (2002).</p> <p><b>The Scanning Tunnelling Atom Probe. <br> <i>Our machine combines an STM with a time-of-flight atom probe.<br> </i></b>189 &quot;Atomic species identification&nbsp; in STM using an imaging atom-probe technique&quot;. U. Weierstall and J. Spence. Surf Sci. 398 p. 267-279.&nbsp; </p> <p><b>Inversion problem of multiple electron or X-ray scattering.<br> <i>Direct, non-iterative methods for recovering potentials from multiple-scattering data.<br> </i></b>174. <span style='font-family:"Times New Roman"'>&quot;Direct inversion of dynamical electron diffraction patterns to structure factors&quot;. J. Spence. Acta Cryst. A. 1998. A54 p. 7 - 18.<br> 3. &quot;Determination of single-scattering distribution from multiple scattering data in ELS&quot;, D Johnson, and J. Spence, J.Phys. D.7, 771 (1974).<br> 256 &quot;A useful disentanglement of the exponential of the sum of two non-commuting matrices, one of which is diagonal&quot;. C. T. Koch and J.C.H.Spence. J. Phys A36, 803 . (Math Phys. UK) 2003. <br> 382 &quot;Two-wavelength inversion of multiply-scattered soft X-ray intensities to charge density&quot;. J.C.H.Spence. Acta Cryst A65. p.28-38 (2009)<o:p></o:p></span></p> <p><b>X-ray holography, diffraction-imaging, lensless imaging and powder diffraction by iterative phasing.<br> <i>Images can now be reconstructed from far-field scattering from non-periodic objects. Applications to femtosecond X-ray diffraction from proteins or single particles.</i></b><br> 241<span style="mso-spacerun:yes">  </span>&quot;Workshop on &quot;New approaches to the Phase Problem for non-periodic objects&quot; John C.H.Spence, M. Howells, L.D.Marks and J. Miao. Ultramic. 90, p.1-6 (2001).<br> 237. &quot;Holography of atoms&quot;. J.C.H.Spence. Nature. 410, p.1037. (2001).<br> 249&nbsp;&nbsp;&quot;Phase recovery and lensless imaging by iterative methods in optical and electron diffraction&quot;. J..Spence, U. Weierstall ,M. Howells. Phil. Trans. 360, p.875 (2002).<br> 289<span style="mso-spacerun:yes">  </span>&quot;<span style='font-family:"Times New Roman"'>&nbsp;X-ray image reconstruction from a diffraction pattern alone. S. Marchesini,<span style="mso-spacerun:yes">  </span>J.C.H. Spence et al.<sup>.. </sup>Phys Rev<span style="mso-spacerun:yes">  </span>B68, 140101(R)<br> 343 </span>&quot;Ab initio phasing of X-ray powder diffraction patterns by charge flipping&quot;. J.S.Wu, J.C.H.Spence, M. O'Keeffe, K. Leinenweber.<span style="mso-spacerun:yes">  </span>Nature Materials. 5, 647 2006. <br> <span style='font-family:"Times New Roman"'>367<a name="OLE_LINK68"></a><a name="OLE_LINK67"><span style='mso-bookmark:OLE_LINK68'><span style="mso-spacerun:yes">  </span>&quot;Dose, exposure time and resolution in serial crystallography&quot;.</span></a> <a name="OLE_LINK66"></a><a name="OLE_LINK65"><span style='mso-bookmark:OLE_LINK66'>D. Starodub, J. Spence et al.</span></a><span style="mso-spacerun:yes">  </span>J. Synch Res. 15,<span style="mso-spacerun:yes">  </span>62-73 (2008)<br> 388 <b><span style="mso-spacerun:yes"> </span></b>&quot;Triple-beam tomographic femtosecond X-ray diffractive imaging&quot;. K. Schmidt, J. Spence, U. Weierstall, D. Starodub, H. Chapman, M. Howells, B. Doak.J. Phys Rev Letts. 101, 115507<span style="mso-spacerun:yes">  </span>(2008)<br> 386<span style="mso-spacerun:yes">   </span>&quot;Powder diffraction from a continuous microjet of nanoscale protein crystals&quot;. D.A. Shapiro, D. De Ponte, R.B. Doak, P. Fromme, G. Hembree, M. Hunter, S. Marchesini, K. Schmidt, U. Weierstall, J.C.H.Spence.<span style="mso-spacerun:yes">  </span>J. Synch. Rad.<span style="mso-spacerun:yes">  </span>15, 593-599 (2008). (2008).<br> 377<a name="OLE_LINK98"></a><a name="OLE_LINK97"><span style='mso-bookmark: OLE_LINK98'><span style="mso-spacerun:yes">  </span>&quot;Ultrafast, ultrabright, X-ray holography using a uniformly redundant array&quot;.</span></a> S.Marchesini J.C. H. Spence et al. (2008) Nature Photonics 2, 560 - 563 (2008).</span></p> <p><span style='font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p> <p><span style='font-family:"Times New Roman"'>&nbsp;<o:p></o:p></span></p> <p>&nbsp; <br> &nbsp; <br> &nbsp; <br> &nbsp; <br> &nbsp; <br> &nbsp; <br> &nbsp; </p> </div> </body> </html>