Institut für Funktionelle Nanosysteme

Prof. Carl E. Krill III, Ph.D.

Forschungsschwerpunkte

  • Thermodynamik und Kinetik nanokristalliner Materialien
  • Mikrostrukturevolution in einphasigen und mehrphasigen polykristallinen Materialien
  • 3D-Charakterisierung von Mikrostrukturen und deren Evolution mittels Röntgenmikrotomographie und Röntgenmikroskopie
  • Phasenfeldsimulation von Kornwachstum und Ostwald-Vergröberung
  • Mikrostrukturauswertung sowie -modellierung unterstützt durch Maschinelles Lernen

Lehrveranstaltungen

  • Elektronische und optische Materialien
  • Festkörperphysik (Physik)
  • Grundlagen der Elektrotechnik II
  • Hauptseminar (Physik) "Physical properties of materials and their use in applications"
  • Technical Presentation Skills for Engineers
  • Technische Mechanik

Publikationsliste

2023

59.
Krill III, C.E.; Holm, E.A.; Dake, J.M.; Cohn, R.; Holíková, K.; Andorfer, F.
Extreme Abnormal Grain Growth: Connecting Mechanisms to Microstructural Outcomes
Annual Review of Materials Research, 53 :319-345
2023
DOI:10.1146/annurev-matsci-080921-091647

2022

58.
Krill III, C.E.; Ehrhardt, H.; Birringer, R.
Thermodynamic stabilization of nanocrystallinity
International Journal of Materials Research, 96 :1134-1141
2022
DOI:10.1515/ijmr-2005-0196

2020

57.
Zeller, R.A.; Fey, H.J.; Braun, C.; Birringer, R.; Krill III, C.E.
Influence of rapid annealing on the evolution of fractal abnormal grains in nanocrystalline Pd–10 at% Au
IOP Conference Series: Materials Science and Engineering, 580 :012055
2020
DOI:10.1088/1757-899X/580/1/012055

2016

56.
Dake, J.M.; Oddershede, J.; Sørensen, H.O.; Werz, T.; Shatto, J.C.; Schmidt, S.; Krill III, C.E.
Direct observation of grain rotations during coarsening of a semisolid Al-Cu alloy
Proceedings of the National Academy of Sciences of the United States of America, 113 :E5998-E6006
2016
DOI:10.1073/pnas.1602293113
55.
Spettl, A.; Brereton, T.; Duan, Q.; Werz, T.; Krill III, C.E.; Kroese, D.P.; Schmidt, V.
Fitting Laguerre tessellation approximations to tomographic image data
Philosophical Magazine, 96 :166-189
2016
DOI:10.1080/14786435.2015.1125540

2015

54.
Spettl, A.; Wimmer, R.; Werz, T.; Heinze, M.; Odenbach, S.; Krill III, C.E.; Schmidt, V.
Stochastic 3D modeling of Ostwald ripening at ultra-high volume fractions of the coarsening phase
Modelling and Simulation in Materials Science and Engineering, 23 :065001
2015
DOI:10.1088/0965-0393/23/6/065001

2014

53.
Werz, T.; Baumann, M.; Wolfram, U.; Krill III, C.E.
Particle tracking during Ostwald ripening using time-resolved laboratory x-ray microtomography
Materials Characterization, 90 :185-195
2014
DOI:10.1016/j.matchar.2014.01.022

2013

52.
Dake, J.; Krill III, C.E.
Abnormal grain growth in nanocrystalline materials
Materials Science Forum, 753 :317-320
2013
DOI:10.4028/www.scientific.net/MSF.753.317
51.
Yao, W.Z.; Wang, P.; Manhard, A.; Krill III, C.E.; You, J.H.
Effect of hydrogen on the slip resistance of tungsten single crystals
Materials Science and Engineering: A, 559 :467-473
2013
DOI:10.1016/j.msea.2012.08.127
50.
Spettl, A.; Werz, T.; Krill III, C.E.; Schmidt, V.
Parametric Representation of 3D Grain Ensembles in Polycrystalline Microstructures
Journal of Statistical Physics, 154 :913-928
2013
DOI:10.1007/s10955-013-0893-7

2012

49.
Kurasch, S.; Kotakoski, J.; Lehtinen, O.; Skákalová, V.; Smet, J.; Krill III, C.E.; Krasheninnikov, A.V.; Kaiser, U.
Atom-by-atom observation of grain boundary migration in graphene
Nano Letters, 12 :3168 - 3173
2012
DOI:10.1021/nl301141g
48.
Chang, K.; Krill III, C.E.; Chen, L.-Q.
Evaluating microstructural parameters of three-dimensional grains generated by phase-field simulation or other voxel-based techniques
Modelling and Simulation in Materials Science and Engineering, 20 :075009
2012
DOI:10.1088/0965-0393/20/7/075009
47.
Barunovic, R.; Haas, V.; Langlade, C.; Krill III, C.E.
Sliding wear of 100Cr6 in a diesel-lubricated flat-flat contact under realistic loads
Tribology International, 53 :1-11
2012
DOI:10.1016/j.triboint.2012.03.019
46.
Dake, J.M.; Krill III, C.E.
Sudden loss of thermal stability in Fe-based nanocrystalline alloys
Scripta Materialia, 66 (6) :390 - 393
2012
DOI:10.1016/j.scriptamat.2011.11.040
45.
Paul, H.; Dake, J.; Krill III, C.E.
Tales of the Abnormal: Nanocrystalline Grain Growth at Low Temperatures
Materials Science Forum, 715-716 :315 - 316
2012
DOI:10.4028/www.scientific.net/MSF.715-716.315

2011

44.
Paul, H.; Krill III, C.E.
Anomalously linear grain growth in nanocrystalline Fe
Scripta Materialia, 65 (1) :5--8
2011
DOI:10.1016/j.scriptamat.2011.03.028
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-79955463763&partnerID=40&md5=0acd935ce60b3701c5af80e6843aa8a0
43.
Westenfelder, B.; Meyer, J.C.; Biskupek, J.; Algara-Siller, G.; Lechner, L.G.; Kusterer, J.; Kaiser, U.; Krill III, C.E.; Kohn, E.; Scholz, F.
Graphene-based sample supports for in situ high-resolution TEM electrical investigations
Journal of Physics D: Applied Physics, 44 (5) :055502
2011
DOI:10.1088/0022-3727/44/5/055502
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-79251564757&partnerID=40&md5=26f2fad10b5202eba51a6cece8c8c58f
42.
Zierold, R.; Wu, Z.; Biskupek, J.; Kaiser, U.; Bachmann, J.; Krill III, C.E.; Nielsch, K.
Magnetic, multilayered nanotubes of low aspect ratios for liquid suspensions
Advanced Functional Materials, 21 (2) :226-232
2011
DOI:10.1002/adfm.201001395
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-78650706323&partnerID=40&md5=682166dde676c002718e267d9983550f
41.
Werz, T.; Wolfram, U.; Krill III, C.E.
Tomographic investigation of Ostwald ripening in an aluminum-based alloy
3D Microstructure Meeting 2011, Seite 126-127
Frankfurt
2011
Herausgeber: MatInfo Werkstoffinformationsgesellschaft mbH, Frankfurt
2011
ISBN:978-3-88355-388-7
40.
Westenfelder, B.; Meyer, J.C.; Biskupek, J.; Kurasch, S.; Scholz, F.; Krill III, C.E.; Kaiser, U.
Transformations of carbon adsorbates on graphene substrates under extreme heat
Nano Letters, 11 (12) :5123--5127
2011
DOI:10.1021/nl203224z
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-83655192463&partnerID=40&md5=694363e33ef412545762e2a5f81ba012

2010

39.
Wu, Z.; Mueller, A.; Degenhard, S.; Ruff, S.E.; Geiger, F.; Bittner, A.M.; Wege, C.; Krill III, C.E.
Enhancing the magnetoviscosity of ferrofluids by the addition of biological nanotubes
ACS Nano, 4 (8) :4531-4538
2010
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-78650162162&partnerID=40&md5=3cc8ed567eb2db0a4778ff7cf621de66
38.
Wu, Z.; Zierold, R.; Mueller, A.; Ruff, S.E.; Ma, C.; Khan, A.A.; Geiger, F.; Sommer, B.A.; Knez, M.; Nielsch, K.; Bittner, A.M.; Wege, C.; Krill III, C.E.
Preparation and magnetoviscosity of nanotube ferrofluids by viral scaffolding and ALD on porous templates
Physica Status Solidi (B) Basic Research, 247 (10) :2412-2423
2010
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-78650465768&partnerID=40&md5=163e1a32fee9cd597f055525caf65b01

2009

37.
Wu, Z.; Dong, H.; Chuvilin, A.; Wiedwald, U.; Han, L.; Krill III, C.E.
FePt nanorods and nanowires for novel ferrofluids
Diffusion and Defect Data Pt.B: Solid State Phenomena, 154 :89-94
2009
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-75649106904&partnerID=40&md5=ee0d4a70ba5bff4ba963c1b5b232e3bc

2008

36.
Schirra, M.; Schneider, R.; Reiser, A.; Prinz, G.M.; Feneberg, M.; Biskupek, J.; Kaiser, U.; Krill III, C.E.; Thonke, K.; Sauer, R.
Stacking fault related 3.31-eV luminescence at 130-meV acceptors in zinc oxide
Physical Review B - Condensed Matter and Materials Physics, 77 (12) :--
2008
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-41549146671&partnerID=40&md5=3e6f023373e93d02b2899f5418c46b8e
35.
Barunovic, R.; Haas, V.; Langlade, C.; Krill III, C.E.
Statistical modeling of wear in lubricated model systems
Tribologie und Schmierungstechnik, 55 (4) :16--21
2008
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-54249161025&partnerID=40&md5=a38b8758e0b056e395ecfbf0d2cfecf3

2007

34.
Schirra, M.; Schneider, R.; Reiser, A.; Prinz, G.M.; Feneberg, M.; Biskupek, J.; Kaiser, U.; Krill III, C.E.; Sauer, R.; Thonke, K.
Acceptor-related luminescence at 3.314 eV in zinc oxide confined to crystallographic line defects
Physica B: Condensed Matter, 401-402 :362--365
2007
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-36048999803&partnerID=40&md5=8a64f5d1d0b6c09ec8d7fbec25aba9f6
33.
Choudhury, S.; Li, Y.L.; Krill III, C.E.; Chen, L.Q.
Effect of grain orientation and grain size on ferroelectric domain switching and evolution: Phase field simulations
Acta Materialia, 55 (4) :1415--1426
2007
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-33846693700&partnerID=40&md5=f85bc27aaaf5bfcb619ae2092e83e337

2006

32.
Embs, J.; Müller, H.W.; Krill III, C.E.; Meyer, F.; Natter, H.; Müller, B.; Wiegand, S.; Lücke, M.; Knorr, K.; Hempelmann, R.
Characterization of the grain size in ferromagnetic colloids: Comparing torsional-pendulum measurements with standard complementary methods
Zeitschrift fur Physikalische Chemie, 220 (2) :153--171
2006
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-33644529439&partnerID=40&md5=8717e3d2ae17fcdb8401e02c2f19176f
31.
Kruk, R.; Ghafari, M.; Hahn, H.; Michels, D.; Birringer, R.; Krill III, C.E.; Kmiec, R.; Marszalek, M.
Grain-size-dependent magnetic properties of nanocrystalline Gd
Physical Review B - Condensed Matter and Materials Physics, 73 (5) :1--6
2006
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-33244459590&partnerID=40&md5=8b60db7887f35fea4a89157fc68e48f2
30.
Fricke, M.; Volkmer, D.; Krill III, C.E.; Kellermann, M.; Hirsch, A.
Vaterite polymorph switching controlled by surface charge density of an amphiphilic dendron-calix[4]arene
Crystal Growth and Design, 6 (5) :1120--1123
2006
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-33744771956&partnerID=40&md5=7d3e4f7588f386de53d2816ac3a3bab7

2005

29.
Choudhury, S.; Li, Y.L.; Krill III, C.E.; Chen, L.-Q.
Phase-field simulation of polarization switching and domain evolution in ferroelectric polycrystals
Acta Materialia, 53 (20) :5313--5321
2005
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-27144458061&partnerID=40&md5=586df979ff3785d5349ea3e0af887260
28.
Krill III, C.E.; Ehrhardt, H.; Birringer, R.
Thermodynamic stabilization of nanocrystallinity
Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques, 96 (10) :1134--1141
2005
DOI:10.1515/ijmr-2005-0196

2004

27.
Krill III, C.E.; Döbrich, K.M.; Ziehmer, M.; Rau, C.
Microstructural characterization in 3D - The key to understanding grain growth in polycrystalline materials?
Proceedings of the SPIE, 5535 :274-285
2004
DOI:10.1117/12.559827
26.
Döbrich, K.M.; Rau, C.; Krill III, C.E.
Quantitative characterization of the three-dimensional microstructure of polycrystalline Al-Sn using X-ray microtomography
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 35 A (7) :1953--1961
2004
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-3442889382&partnerID=40&md5=c8aefb9f6cb3677d3c6e2194f9fd5162
25.
Weissmüller, J.; Michels, A.; Michels, D.; Wiedenmann, A.; Krill III, C.E.; Sauer, H.M.; Birringer, R.
Spin structure of nanocrystalline terbium
Physical Review B - Condensed Matter and Materials Physics, 69 (5) :544021--5440216
2004
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-1642279708&partnerID=40&md5=d1d8c5443bc0275540a2fd148c9263a1

2003

24.
Helfen, L.; Wu, D.T.; Birringer, R.; Krill III, C.E.
The impact of stochastic atomic jumps on the kinetics of curvature-driven grain growth
Acta Materialia, 51 (10) :2743--2754
2003
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0038188711&partnerID=40&md5=c64c605fb610db99b87b5db5524388f9

2002

23.
Krill III, C.E.; Chen, L.-Q.
Computer simulation of 3-D grain growth using a phase-field model
Acta Materialia, 50 (12) :3057--3073
2002
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0037125176&partnerID=40&md5=04e568bc81ba1ced487a73019db98912
22.
Michels, D.; Krill III, C.E.; Birringer, R.
Grain-size-dependent Curie transition in nanocrystalline Gd: The influence of interface stress
Journal of Magnetism and Magnetic Materials, 250 :203--211
2002
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0036751174&partnerID=40&md5=4a636b46eb5d0bfa188f29eb61559761
21.
Weissmüller, J.; Michels, D.; Michels, A.; Krill III, C.E.; Wiedenmann, A.; Gajbhiye, N.S.
Magnetic microstructure and properties of the nanocrystalline hard magnet terbium
Physica Status Solidi (A) Applied Research, 189 (2) :495--498
2002
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0036475932&partnerID=40&md5=f90d454dd5a548acc3887c73cde57307

2001

20.
Natter, H.; Löffler, M.-S.; Krill III, C.E.; Hempelmann, R.
Crystallite growth of nanocrystalline transition metals studied in situ by high temperature synchrotron X-ray diffraction
Scripta Materialia, 44 (8-9) :2321--2325
2001
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0035906649&partnerID=40&md5=2666b1a3278f070184073eb8977a4edc
19.
Weissmüller, J.; Michels, D.; Michels, A.; Wiedenmann, A.; Krill III, C.E.; Sauer, H.M.; Birringer, R.
Magnetic small-angle neutron scattering by nanocrystalline terbium
Scripta Materialia, 44 (8-9) :2357--2361
2001
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0035906790&partnerID=40&md5=1128b74bc421da71a38530575b2ce930
18.
Krill III, C.E.; Helfen, L.; Michels, D.; Natter, H.; Fitch, A.; Masson, O.; Birringer, R.
Size-dependent grain-growth kinetics observed in nanocrystalline Fe
Physical Review Letters, 86 (5) :842--845
2001
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0035132277&partnerID=40&md5=33f665f4ac7112a37013b50e05ed84f8
17.
Krill III, C.E.; Döbrich, K.; Michels, D.; Michels, A.; Rau, C.; Weitkamp, T.; Snigirev, A.; Birringer, R.
Tomographic characterization of grain-size correlations in polycrystalline Al-Sn
, Proceedings of SPIE - The International Society for Optical EngineeringBand4503, Seite 205--212
2001
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0035762324&partnerID=40&md5=488cb844d69863906de6cc149b556743
16.
Rau, C.; Weitkamp, T.; Snigirev, A.; Schroer, C.; Benner, B.; Tümmler, J.; Günzler, T.; Kuhlmann, M.; Lengeler, B.; Krill III, C.E.; Doebrich, K.; Michels, D.; Michels, A.
Tomography with high resolution
, Proceedings of SPIE - The International Society for Optical EngineeringBand4503, Seite 14--22
2001
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-18644379640&partnerID=40&md5=9263a14a807d1a94346edc2fffa738eb

2000

15.
Natter, H.; Schmelzer, M.; Löffler, M.-S.; Krill III, C.E.; Fitch, A.; Hempelmann, R.
Grain-Growth Kinetics of Nanocrystalline Iron Studied in Situ by Synchrotron Real-Time X-ray Diffraction
Journal of Physical Chemistry B, 104 (11) :2467--2476
2000
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0001322764&partnerID=40&md5=e7e8cb958d67efd6581a06be792bd782
14.
Shapiro, E.; Würschum, R.; Schaefer, H.-E.; Ehrhardt, H.; Krill III, C.E.; Birringer, R.
Structural stability and high-temperature positron lifetime study of mechanically alloyed nanocrystalline Pd-Zr
Materials Science Forum, 343 :II/--
2000
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-12944259213&partnerID=40&md5=dbddea847da8505ca64ada6d69d548f6

1999

13.
Michels, A.; Krill III, C.E.; Ehrhardt, H.; Birringer, R.; Wu, D.T.
Modelling the influence of grain-size-dependent solute drag on the kinetics of grain growth in nanocrystalline materials
Acta Materialia, 47 (7) :2143--2152
1999
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0032676977&partnerID=40&md5=dc62c52aee6a5beb6a36fe8ebd6a5431

1998

12.
Krill III, C.E.; Birringer, R.
Estimating grain-size distributions in nanocrystalline materials from X-ray diffraction profile analysis
Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, 77 (3) :621--640
1998
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0032034090&partnerID=40&md5=30fb2f304976652d620162fb8987ffcf

1997

11.
Krill III, C.E.; Ehrhardt, H.; Birringer, R.
Grain-size stabilization in nanocrystalline materials
TMS Annual Meeting, Seite 115--124
1997
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0031343990&partnerID=40&md5=20cf65d0fa28e7e7ee94bf58c5b53135
10.
Krill III, C.E.; Merzoug, F.; Krauss, W.; Birringer, R.
Magnetic properties of nanocrystalline Gd and W/Gd
Nanostructured Materials, 9 (1-8) :455--458
1997
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0000123088&partnerID=40&md5=3a2cb78720a3970668d41ac16f05b68b

1996

9.
Krill III, C.E.; Birringer, R.
Investigations of grain-boundary structure and stability in nanocrystalline Pd
Materials Science Forum, 225-227 (PART 1) :263--274
1996
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0030386545&partnerID=40&md5=32de33ef3994ebf771a55074dda29acf

1995

8.
Krill III, C.E.; Li, J.; Garland, C.M.; Ettl, C.; Samwer, K.; Yelon, W.B.; Johnson, W.L.
Precursors of amorphization in supersaturated Nb-Pd solid solutions
Journal of Materials Research, 10 (2) :280--291
1995
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0029250734&partnerID=40&md5=95315c50c928daa67dfc3d92aca9d007
7.
Krill III, C.E.; Klein, R.; Janes, S.; Birringer, R.
Thermodynamic stabilization of grain boundaries in nanocrystalline alloys
Materials Science Forum, 179-181 :443--448
1995
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0029228588&partnerID=40&md5=1771ba2d28d4125963e00dca43109be2

1993

6.
Eckert, J.; Holzer, J.C.; Krill III, C.E.; Johnson, W.L.
Mechanically driven alloying and grain size changes in nanocrystalline Fe-Cu powders
Journal of Applied Physics, 73 (6) :2794--2802
1993
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0344486943&partnerID=40&md5=626deff0ff628dcb986017403e4c0c2e
5.
Krill III, C.E.; Li, J.; Yelon, W.B.; Johnson, W.L.
Search for instability-induced amorphization in deuterated ErFe2
Physical Review B, 48 (6) :3689--3697
1993
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0642294850&partnerID=40&md5=d532dc5319a013404aab9e44e70176d2
4.
Krill III, C.E.; Li, J.; Ettl, C.; Samwer, K.; Yelon, W.B.; Johnson, W.L.
Static mean-square displacement as an indicator of the crystal-to-amorphous transformation
Journal of Non-Crystalline Solids, 156-158 (PART 2) :506--509
1993
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0027905665&partnerID=40&md5=0db1b6865f3c8a4fbca01c394c94715b
3.
Johnson, W.L.; Li, M.; Krill III, C.E.
The crystal to glass transformation in relation to melting
Journal of Non-Crystalline Solids, 156-158 (PART 2) :481--492
1993
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0027905516&partnerID=40&md5=a21e13fe216afac8e4fd9d95fa7f7c67

1992

2.
Eckert, J.; Holzer, J.C.; Krill III, C.E.; Johnson, W.L.
Reversible grain size changes in ball-milled nanocrystalline Fe - Cu alloys
Journal of Materials Research, 7 (8) :1980--1983
1992
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0026903038&partnerID=40&md5=c1f800ab56010c39ae78aa49176a18df
1.
Eckert, J.; Holzer, J.C.; Krill III, C.E.; Johnson, W.L.
Structural and thermodynamic properties of nanocrystalline fcc metals prepared by mechanical attrition
Journal of Materials Research, 7 (7) :1751--1761
1992
Datei:http://www.scopus.com/inward/record.url?eid=2-s2.0-0026897169&partnerID=40&md5=03479d9f6e89ad02e630173a4aedee1d

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