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Search: id:"swepub:oai:DiVA.org:uu-457696" > Fabrication and cha...

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  • Micheal Raj, PushparaniLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, MAX Lab 4, Lund, Sweden. (author)

Fabrication and characterisation of a silicon-borosilicate glass microfluidic device for synchrotron-based hard X-ray spectroscopy studies

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021
  • Royal Society of Chemistry,2021
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-457696
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-457696URI
  • https://doi.org/10.1039/d1ra05270eDOI
  • https://lup.lub.lu.se/record/f96aa79d-b9c2-4184-a7d8-8cdfd4545a45URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Some of the most fundamental chemical building blocks of life on Earth are the metal elements. X-ray absorption spectroscopy (XAS) is an element-specific technique that can analyse the local atomic and electronic structure of, for example, the active sites in catalysts and energy materials and allow the metal sites in biological samples to be identified and understood. A microfluidic device capable of withstanding the intense hard X-ray beams of a 4th generation synchrotron and harsh chemical sample conditions is presented in this work. The device is evaluated at the K-edges of iron and bromine and the L-3-edge of lead, in both transmission and fluorescence mode detection and in a wide range of sample concentrations, as low as 0.001 M. The device is fabricated in silicon and glass with plasma etched microchannels defined in the silicon wafer before anodic bonding of the glass wafer into a complete device. The device is supported with a well-designed printed chip holder that made the microfluidic device portable and easy to handle. The chip holder plays a pivotal role in mounting the delicate microfluidic device on the beamline stage. Testing validated that the device was sufficiently robust to contain and flow through harsh acids and toxic samples. There was also no significant radiation damage to the device observed, despite focusing with intense X-ray beams for multiple hours. The quality of X-ray spectra collected is comparable to that from standard methods; hence we present a robust microfluidic device to analyse liquid samples using synchrotron XAS.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Barbe, LaurentUppsala University,Uppsala universitet,Science for Life Laboratory, SciLifeLab,Institutionen för materialvetenskap,EMBLA(Swepub:uu)lauba497 (author)
  • Andersson, MartinUppsala University,Uppsala universitet,Institutionen för materialvetenskap,Science for Life Laboratory, SciLifeLab,EMBLA(Swepub:lu)extLU-1064 (author)
  • Moreira, Milena,1977-Uppsala University,Uppsala universitet,Science for Life Laboratory, SciLifeLab,Institutionen för materialvetenskap(Swepub:uu)milde844 (author)
  • Haase, DörtheLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, MAX Lab 4, Lund, Sweden.(Swepub:lu)maxl-deh (author)
  • Wootton, JamesLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, MAX Lab 4, Lund, Sweden.(Swepub:lu)ja4404wo (author)
  • Nehzati, SusanLund University,Lunds universitet,Lund Univ, MAX Lab 4, Lund, Sweden.(Swepub:lu)su7285ne (author)
  • Terry, Ann E.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, MAX Lab 4, Lund, Sweden.(Swepub:lu)an3213te (author)
  • Friel, Ross J.Halmstad University,Halmstad Univ, Sch Informat Technol, Halmstad, Sweden.(Swepub:lu)ro5756fr (author)
  • Tenje, MariaUppsala University,Uppsala universitet,Science for Life Laboratory, SciLifeLab,Institutionen för materialvetenskap,EMBLA(Swepub:lu)ftf-mit (author)
  • Sigfridsson Clauss, Kajsa G.V.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, MAX Lab 4, Lund, Sweden.(Swepub:lu)biok-ksi (author)
  • Lunds universitetMAX IV-laboratoriet (creator_code:org_t)

Related titles

  • In:RSC Advances: Royal Society of Chemistry11:47, s. 29859-298692046-2069

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