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     data   graph     files  public XRD, XPS, and raman data collected from 2013 to 2017 (INSPIRE Pyrite)    ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_684649

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String X-ray diffraction (XRD):\u00a0

An X-ray diffractometer (Bruker, D2 phaser) with a conventional Theta-2theta
diffraction geometry was used to determine the crystalline phase of the
deposit on an iron substrate.\u00a0

X-ray photoelectron spectroscopy (XPS):\u00a0

The elements (Fe and S) present in the thin film deposit and their chemical
bonding states were identified by using XPS (K-Alpha, Thermo Scientific, MA).
The spectra were collected using a 400 um spot size and 20 eV pass energy from
an Al source after Ar plasma sputtering to remove any surface
contamination.\u00a0

Raman spectrum data:

The Raman spectrum of the iron pyrite nanoparticles were collected by using a
LabRAM Aramis Raman system (Horiba Jobin Yvon, NJ) with laser excitation at
532 nm.\u00a0
attribute NC_GLOBAL awards_0_award_nid String 623699
attribute NC_GLOBAL awards_0_award_number String OCE-1344241
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1344241 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String XRD, XPS, and Raman spectrum data
P. Girguis and D. Clarke, PIs
Version 13 March 2017
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2017-03-17T23:17:34Z
attribute NC_GLOBAL date_modified String 2019-04-03T20:25:54Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.684649.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/684649 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Raman Microscope
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Used to analyze Raman spectrum
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 684669
attribute NC_GLOBAL instruments_0_description String The Raman microscope is a laser-based microscopic device used to perform Raman spectroscopy. The Raman microscope begins with a standard optical microscope, and adds an excitation laser, laser rejection filters, a spectrometer or monochromator, and an optical sensitive detector such as a charge-coupled device (CCD), or photomultiplier tube, (PMT). One example is the XploRA confocal Raman microscope (information from the manufacturer).
attribute NC_GLOBAL instruments_0_instrument_name String Raman Microscope
attribute NC_GLOBAL instruments_0_instrument_nid String 537935
attribute NC_GLOBAL instruments_0_supplied_name String LabRAM Aramis Raman system
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Used to measure xray defraction
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 684657
attribute NC_GLOBAL instruments_1_description String An X-ray microscope uses electromagnetic radiation in the soft X-ray band to produce images of very small objects. The resolution of X-ray microscopy lies between that of the optical microscope and the electron microscope.
attribute NC_GLOBAL instruments_1_instrument_name String X-Ray Microscope
attribute NC_GLOBAL instruments_1_instrument_nid String 565700
attribute NC_GLOBAL instruments_1_supplied_name String Microscope
attribute NC_GLOBAL keywords String bco, bco-dmo, binding, binding_energy, biological, chemical, data, data_type, dataset, dmo, energy, erddap, intensity, intensity_type, management, oceanography, office, preliminary, raman, raman_shift, shift, theta2, type
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/684649/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/684649 (external link)
attribute NC_GLOBAL param_mapping String {'684649': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/684649/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Harvard University
attribute NC_GLOBAL people_0_person_name String Peter Girguis
attribute NC_GLOBAL people_0_person_nid String 544586
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Harvard University
attribute NC_GLOBAL people_1_person_name String David Clarke
attribute NC_GLOBAL people_1_person_nid String 623703
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Harvard University
attribute NC_GLOBAL people_2_person_name String Xiaofei Guan
attribute NC_GLOBAL people_2_person_nid String 684659
attribute NC_GLOBAL people_2_role String Contact
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Hannah Ake
attribute NC_GLOBAL people_3_person_nid String 650173
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String INSPIRE_Pyrite
attribute NC_GLOBAL projects_0_acronym String INSPIRE_Pyrite
attribute NC_GLOBAL projects_0_description String This INSPIRE award is partially funded by Biological Oceanography Program in Division of Ocean Sciences, in the Directorate of Geosciences; the Electronic and Photonic Materials Program in the Division of Materials Research, Directorate of Mathematical and Physical Sciences.
A simple idea motivates this project: By characterizing the mechanisms underlying pyrite film deposition by subsurface microbes living at hydrothermal vents, can approaches be developed to controllably grow high-purity pyrite films that could be used to produce low-cost photovoltaic solar cells? Recent in situ studies at hydrothermal vents have found "subsurface" microbes associated with the deposition of large crystalline metal sulfides (up to 1.1 millimeters), including iron pyrite. In laboratory incubations, vent microbes specifically deposited pyrite (FeS2), devoid of Zn, Cu and other metals that were abundant in the liquid media. Abiotic incubations did not exhibit this specificity. The investigators hypothesize that, in situ, microbes deposit pyrite via a number of potential processes, including a physiological process called extracellular electron transfer (EET), wherein microbes shuttle electrons to/from minerals. In situ, EET-enabled microbes may use conductive minerals to electrically access oxidants, and deposit pyrite on these surfaces. Vents are thus natural bioelectrochemical cells, which grow metal sulfides via microbial and abiotic electrochemical processes, though the details and mechanisms remain to be determined. This project is aimed at elucidating the mechanisms underlying microbial FeS2 pyrite bio-deposition, and assessing how microbes might be used to deposit epitaxial films for solar cells absorbers. FeS2 pyrite has been identified as prospective low cost solar absorbers because of their abundance, suitable band-gap (~0.95 eV) and high optical absorbance. Microbial pyrite film deposition at lower temperatures (
attribute NC_GLOBAL projects_0_end_date String 2017-08
attribute NC_GLOBAL projects_0_name String INSPIRE Track 1: Microbial Sulfur Metabolism and its Potential for Transforming the Growth of Epitaxial Solar Cell Absorbers
attribute NC_GLOBAL projects_0_project_nid String 623700
attribute NC_GLOBAL projects_0_start_date String 2013-09
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String XRD, XPS, and raman data collected from 2013 to 2017 (INSPIRE Pyrite)
attribute NC_GLOBAL title String XRD, XPS, and raman data collected from 2013 to 2017 (INSPIRE Pyrite)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable data_type   String  
attribute data_type bcodmo_name String datatype
attribute data_type description String Type of data described: XRD XPS or Raman1 and 2; Raman1 is the Raman spectrum of iron pyrite nano-particles; Raman2 is the Raman spectrum of an iron pyrite thin film formed on an iron pyrite substrate using the hot injection method.
attribute data_type long_name String Data Type
attribute data_type units String unitless
variable theta2   float  
attribute theta2 _FillValue float NaN
attribute theta2 actual_range float 20.00173, 80.00204
attribute theta2 bcodmo_name String unknown
attribute theta2 description String 2-Theta angle
attribute theta2 long_name String Theta2
attribute theta2 units String degree
variable binding_energy   float  
attribute binding_energy _FillValue float NaN
attribute binding_energy actual_range float 157.08, 740.08
attribute binding_energy bcodmo_name String unknown
attribute binding_energy description String Binding energy of XPS
attribute binding_energy long_name String Binding Energy
attribute binding_energy units String eV
variable intensity_type   String  
attribute intensity_type bcodmo_name String unknown
attribute intensity_type description String Intensity measured for either Fe 2p or S 2p
attribute intensity_type long_name String Intensity Type
attribute intensity_type units String unitless
variable raman_shift   float  
attribute raman_shift _FillValue float NaN
attribute raman_shift actual_range float 73.7037, 999.625
attribute raman_shift bcodmo_name String unknown
attribute raman_shift description String Raman spectrum
attribute raman_shift long_name String Raman Shift
attribute raman_shift units String centimeters
variable intensity   float  
attribute intensity _FillValue float NaN
attribute intensity actual_range float 0.17428, 23834.8
attribute intensity bcodmo_name String unknown
attribute intensity description String Raman spectrum and XRD intensity
attribute intensity long_name String Intensity
attribute intensity units String arbitrary units

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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