{"id":"https://openalex.org/W2051400694","doi":"https://doi.org/10.1021/jp046701q","title":"Photoionization Threshold of Eumelanosomes Determined Using UV Free Electron Laser\u2212Photoelectron Emission Microscopy","display_name":"Photoionization Threshold of Eumelanosomes Determined Using UV Free Electron Laser\u2212Photoelectron Emission Microscopy","publication_year":2004,"publication_date":"2004-09-25","ids":{"openalex":"https://openalex.org/W2051400694","doi":"https://doi.org/10.1021/jp046701q","mag":"2051400694"},"language":"en","primary_location":{"id":"doi:10.1021/jp046701q","doi":"https://doi.org/10.1021/jp046701q","is_oa":false,"landing_page_url":"https://doi.org/10.1021/jp046701q","pdf_url":null,"source":{"id":"https://openalex.org/S185621672","display_name":"The Journal of Physical Chemistry B","issn_l":"1520-5207","issn":["1520-5207","1520-6106"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","poland-140","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320006","host_organization_name":"American Chemical Society","host_organization_lineage":["https://openalex.org/P4310320006"],"host_organization_lineage_names":["American Chemical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of Physical Chemistry B","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5057617315","display_name":"Alexander Samokhvalov","orcid":"https://orcid.org/0000-0002-7273-7322","observed_orcids":["https://orcid.org/0000-0002-7273-7322"]},"institutions":[{"id":"https://openalex.org/I137902535","display_name":"North Carolina State University","ror":"https://ror.org/04tj63d06","country_code":"US","type":"education","lineage":["https://openalex.org/I137902535"]},{"id":"https://openalex.org/I170897317","display_name":"Duke University","ror":"https://ror.org/00py81415","country_code":"US","type":"education","lineage":["https://openalex.org/I170897317"]},{"id":"https://openalex.org/I4210126298","display_name":"Duke Medical Center","ror":"https://ror.org/03njmea73","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210126298","https://openalex.org/I4210144876"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alexander Samokhvalov","raw_affiliation_strings":["Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708","institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078128825","display_name":"Jacob Garguilo","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I137902535","display_name":"North Carolina State University","ror":"https://ror.org/04tj63d06","country_code":"US","type":"education","lineage":["https://openalex.org/I137902535"]},{"id":"https://openalex.org/I170897317","display_name":"Duke University","ror":"https://ror.org/00py81415","country_code":"US","type":"education","lineage":["https://openalex.org/I170897317"]},{"id":"https://openalex.org/I4210126298","display_name":"Duke Medical Center","ror":"https://ror.org/03njmea73","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210126298","https://openalex.org/I4210144876"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jacob Garguilo","raw_affiliation_strings":["Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708","institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082836865","display_name":"Woochul Yang","orcid":"https://orcid.org/0000-0003-3726-2269","observed_orcids":["https://orcid.org/0000-0003-3726-2269"]},"institutions":[{"id":"https://openalex.org/I137902535","display_name":"North Carolina State University","ror":"https://ror.org/04tj63d06","country_code":"US","type":"education","lineage":["https://openalex.org/I137902535"]},{"id":"https://openalex.org/I170897317","display_name":"Duke University","ror":"https://ror.org/00py81415","country_code":"US","type":"education","lineage":["https://openalex.org/I170897317"]},{"id":"https://openalex.org/I4210126298","display_name":"Duke Medical Center","ror":"https://ror.org/03njmea73","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210126298","https://openalex.org/I4210144876"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"W.-C. Yang","raw_affiliation_strings":["Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708","institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111766290","display_name":"Glenn S. Edwards","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I137902535","display_name":"North Carolina State University","ror":"https://ror.org/04tj63d06","country_code":"US","type":"education","lineage":["https://openalex.org/I137902535"]},{"id":"https://openalex.org/I170897317","display_name":"Duke University","ror":"https://ror.org/00py81415","country_code":"US","type":"education","lineage":["https://openalex.org/I170897317"]},{"id":"https://openalex.org/I4210126298","display_name":"Duke Medical Center","ror":"https://ror.org/03njmea73","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210126298","https://openalex.org/I4210144876"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Glenn S. Edwards","raw_affiliation_strings":["Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708","institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004822979","display_name":"R. J. Nemanich","orcid":"https://orcid.org/0000-0003-3576-8178","observed_orcids":["https://orcid.org/0000-0003-3576-8178"]},"institutions":[{"id":"https://openalex.org/I137902535","display_name":"North Carolina State University","ror":"https://ror.org/04tj63d06","country_code":"US","type":"education","lineage":["https://openalex.org/I137902535"]},{"id":"https://openalex.org/I170897317","display_name":"Duke University","ror":"https://ror.org/00py81415","country_code":"US","type":"education","lineage":["https://openalex.org/I170897317"]},{"id":"https://openalex.org/I4210126298","display_name":"Duke Medical Center","ror":"https://ror.org/03njmea73","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210126298","https://openalex.org/I4210144876"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Robert J. Nemanich","raw_affiliation_strings":["Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708","institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110434913","display_name":"John D. Simon","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I137902535","display_name":"North Carolina State University","ror":"https://ror.org/04tj63d06","country_code":"US","type":"education","lineage":["https://openalex.org/I137902535"]},{"id":"https://openalex.org/I170897317","display_name":"Duke University","ror":"https://ror.org/00py81415","country_code":"US","type":"education","lineage":["https://openalex.org/I170897317"]},{"id":"https://openalex.org/I4210126298","display_name":"Duke Medical Center","ror":"https://ror.org/03njmea73","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210126298","https://openalex.org/I4210144876"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"John D. Simon","raw_affiliation_strings":["Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chemistry Department, Duke University, Durham, North Carolina 27708, Physics Department, North Carolina State University, Raleigh, North Carolina 27695, Free Electron Laser Laboratory, Department of Physics, Duke University, Durham, North Carolina 27708, Biochemistry Department, Duke University Medical Center, Durham, North Carolina 27708","institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5110434913"],"corresponding_institution_ids":["https://openalex.org/I137902535","https://openalex.org/I170897317","https://openalex.org/I4210126298"],"apc_list":null,"apc_paid":null,"fwci":0.9444,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.69252001,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"108","issue":"42","first_page":"16334","last_page":"16338"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11144","display_name":"melanin and skin pigmentation","score":0.6563000082969666,"subfield":{"id":"https://openalex.org/subfields/1307","display_name":"Cell Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T11144","display_name":"melanin and skin pigmentation","score":0.6563000082969666,"subfield":{"id":"https://openalex.org/subfields/1307","display_name":"Cell Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12039","display_name":"Electron and X-Ray Spectroscopy Techniques","score":0.2865999937057495,"subfield":{"id":"https://openalex.org/subfields/2508","display_name":"Surfaces, Coatings and Films"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12381","display_name":"Electron Spin Resonance Studies","score":0.004100000020116568,"subfield":{"id":"https://openalex.org/subfields/1304","display_name":"Biophysics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/eumelanin","display_name":"eumelanin","score":0.8740000128746033},{"id":"https://openalex.org/keywords/photoionization-threshold","display_name":"photoionization threshold","score":0.9380000233650208},{"id":"https://openalex.org/keywords/uv-b-radiation","display_name":"UV-B radiation","score":0.7390000224113464},{"id":"https://openalex.org/keywords/photoemission-electron-microscopy","display_name":"photoemission electron microscopy","score":0.7730000019073486},{"id":"https://openalex.org/keywords/free-electron-laser","display_name":"free-electron laser","score":0.8759999871253967},{"id":"https://openalex.org/keywords/black-hair","display_name":"black hair","score":0.574999988079071},{"id":"https://openalex.org/keywords/action-spectrum","display_name":"action spectrum","score":0.7179999947547913}],"concepts":[{"id":"https://openalex.org/C158749347","wikidata":"https://www.wikidata.org/wiki/Q10284378","display_name":"Photoionization","level":4,"score":0.9716725945472717},{"id":"https://openalex.org/C47362216","wikidata":"https://www.wikidata.org/wiki/Q7187817","display_name":"Photoionization mode","level":5,"score":0.6086147427558899},{"id":"https://openalex.org/C184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","level":1,"score":0.48341476917266846},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.4813750088214874},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.4522155523300171},{"id":"https://openalex.org/C147120987","wikidata":"https://www.wikidata.org/wiki/Q2225","display_name":"Electron","level":2,"score":0.43562835454940796},{"id":"https://openalex.org/C198291218","wikidata":"https://www.wikidata.org/wiki/Q190382","display_name":"Ionization","level":3,"score":0.3401240110397339},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.33432942628860474},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.3310019075870514},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.31546181440353394},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2542743682861328},{"id":"https://openalex.org/C145148216","wikidata":"https://www.wikidata.org/wiki/Q36496","display_name":"Ion","level":2,"score":0.08589032292366028},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1021/jp046701q","doi":"https://doi.org/10.1021/jp046701q","is_oa":false,"landing_page_url":"https://doi.org/10.1021/jp046701q","pdf_url":null,"source":{"id":"https://openalex.org/S185621672","display_name":"The Journal of Physical Chemistry B","issn_l":"1520-5207","issn":["1520-5207","1520-6106"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","poland-140","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320006","host_organization_name":"American Chemical Society","host_organization_lineage":["https://openalex.org/P4310320006"],"host_organization_lineage_names":["American Chemical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of Physical Chemistry B","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W1973221085","https://openalex.org/W1977381325","https://openalex.org/W1987337927","https://openalex.org/W1989493019","https://openalex.org/W1991437967","https://openalex.org/W1992586232","https://openalex.org/W2003035573","https://openalex.org/W2003314432","https://openalex.org/W2014231488","https://openalex.org/W2015851843","https://openalex.org/W2016756426","https://openalex.org/W2017947241","https://openalex.org/W2020407099","https://openalex.org/W2022551409","https://openalex.org/W2035201146","https://openalex.org/W2038659881","https://openalex.org/W2057514802","https://openalex.org/W2077436291","https://openalex.org/W2083262996","https://openalex.org/W2088456425","https://openalex.org/W2114043273","https://openalex.org/W2114100411","https://openalex.org/W2117697201","https://openalex.org/W2152827739","https://openalex.org/W2155016469","https://openalex.org/W2158728801","https://openalex.org/W2161958860","https://openalex.org/W2164958598","https://openalex.org/W2176398872","https://openalex.org/W2621919695","https://openalex.org/W2889017304","https://openalex.org/W3005459665","https://openalex.org/W4241456496","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2016499108","https://openalex.org/W2014411470","https://openalex.org/W3036770473","https://openalex.org/W2020407099","https://openalex.org/W2479203348","https://openalex.org/W7057024761","https://openalex.org/W3147682528","https://openalex.org/W2614692662","https://openalex.org/W1981670548","https://openalex.org/W2618164207"],"abstract_inverted_index":{"The":[0,25,49,69],"application":[1],"of":[2,27,33,88],"UV-free":[3],"electron":[4],"laser":[5],"photoelectron":[6,15],"emission":[7],"microscopy":[8],"(UV-FEL":[9],"PEEM)":[10],"to":[11,74],"measure":[12],"the":[13,31,34,43,62,86,89,92],"threshold":[14,71],"spectrum":[16],"and":[17,30,38,94],"photoionization":[18,45,70,93],"potential":[19,28,40,46],"for":[20,99],"human":[21,54],"eumelanosomes":[22,55],"is":[23,64,72],"described.":[24],"origin":[26,87],"artifacts":[29],"limitations":[32],"technique":[35],"are":[36,47],"discussed":[37],"their":[39],"effects":[41],"on":[42,53],"measured":[44],"quantified.":[48],"UV-FEL-PEEM":[50],"images":[51],"collected":[52],"isolated":[56],"from":[57],"black":[58],"hair":[59],"show":[60],"that":[61],"organelle":[63],"photoionized":[65],"by":[66],"UV-B":[67],"radiation.":[68],"determined":[73],"be":[75],"4.6":[76],"\u00b1":[77],"0.2":[78],"eV.":[79],"This":[80],"result":[81],"provides":[82],"new":[83],"insight":[84],"into":[85],"differences":[90],"between":[91],"oxygen":[95],"photoconsumption":[96],"action":[97],"spectra":[98],"eumelanins.":[100]},"counts_by_year":[{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}