Jørgen A. Sørhaug
About
Research
1. The shorter version
In the project In-SANE I collaborate with another PhD student to come up with methods to join similar and dissimilar metals using cold welding on a micro level (Al/Al and Al/Cu). Our motivation is to develop a simple method to replace parts of Cu wires with Al, to reduce the total weight of electrical components among others. My job is to participate in the above, in addition to characterise the joint microstructure using TEM (an advanced electron microscope) in order to evaluate the joint quality and properties.
2. The slightly longer version
I'm currently a PhD student in the project 'In-situ studies of highly conductive bonded interfaces between aluminium and copper at the nanoscale' (In-SANE), which is a multidisciplinary collaboration between IFY and MTP at NTNU. We aim to develop techniques, tools and procedures for microjoining of Al/Cu components in FIB, using welding methods similar to 'hybrid metal extrusion & bonding' (HYB). The objective is to downscale the welding process to scales relevant to electronic packaging at the nano-scale. My role is to participate in the above, in addition to perform detailed characterisation of the chemical composition and the atomic struture along the interface of the joint primarily using advanced 'transmission electron miscroscopy' (TEM) techniques.
Teaching
As part of my duty work at NTNU I've (will) guided students through the lab parts in the following courses:
- TFY41xx - Physics (F2020/S2021)
- TFY4330 - Nanotools (F2021/F2022)
- TFY4220 - Solid state physics (S2022/S2023)
Background
My background is in natural science with teacher education, and I completed my degree in materials physics at NTNU Trondheim at the TEM Gemini Centre. I was then characterising intermediate band solar cell (IBSC) materials using TEM. My main supervisor was then (and is now) Professor Randi Holmestad.
Publications
2024
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Sørhaug, Jørgen Andre.
(2024)
Electron microscopy of aluminium and aluminium-copper welds made using the hybrid metal extrusion & bonding technique.
NTNU
Doctoral dissertation
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Sørhaug, Jørgen Andre;
Elkjaer, Aksel;
Thronsen, Elisabeth;
Bergh, Tina;
Grong, Øystein;
Vullum, Per Erik.
(2024)
Al-Cu intermetallic phase growth in hybrid metal extrusion & bonding welds exposed to isothermal annealing or direct current cycling.
Materials & design
Academic article
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Celotto, Ambra;
Sandnes, Lise;
Grong, Øystein;
Sørhaug, Jørgen Andre;
Stefani, Gaia;
Wan, Di.
(2024)
Cold butt welding of dissimilar aluminum alloys: Characterization and interface bonding conditions.
Materials Science & Engineering: A
Academic literature review
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Nordahl, Gregory;
Dagenborg, Sivert Johan Vartdal;
Sørhaug, Jørgen Andre;
Nord, Magnus Kristofer.
(2024)
Exploring deep learning models for 4D-STEM-DPC data processing.
Ultramicroscopy
Academic article
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Nordahl, Gregory;
Dagenborg, Sivert Johan Vartdal;
D'Alessio, Andrea;
Brand, Eric;
Vitaliti, Nikolas;
Trier, Felix.
(2024)
On the effect of precession for magnetic differential phase contrast imaging.
Micron
Academic article
2023
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Sørhaug, Jørgen Andre;
Vullum, Per Erik;
Holmestad, Randi.
(2023)
Observation Of Al-Cu Interface Instability During Room Temperature Storage.
Microscopy and Microanalysis
Academic article
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Holmestad, Randi;
Thronsen, Elisabeth;
Kawahara, Yasuhito;
Bergh, Tina;
Sørhaug, Jørgen Andre;
Hell, Christoph Martin.
(2023)
Nucleation and Phase Development of Precipitates in Age-hardenable Aluminium Alloys Studied by 4D-STEM.
Microscopy and Microanalysis
Academic article
2022
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Elkjær, Aksel Sean;
Sørhaug, Jørgen A;
Ringen, Geir;
Bjørge, Ruben;
Grong, Øystein.
(2022)
Electrical and thermal stability of Al-Cu welds: Performance benchmarking of the hybrid metal extrusion and bonding process.
Journal of Manufacturing Processes
Academic article
2021
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Celotto, Ambra;
Grong, Øystein;
Holmestad, Randi;
Sørhaug, Jørgen A;
Torgersen, Jan;
Vullum, Per Erik.
(2021)
Preliminary in-situ study of FIB-assisted method for aluminium solid-state welding at the microscale.
Procedia Structural Integrity
Academic article
Journal publications
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Sørhaug, Jørgen Andre;
Elkjaer, Aksel;
Thronsen, Elisabeth;
Bergh, Tina;
Grong, Øystein;
Vullum, Per Erik.
(2024)
Al-Cu intermetallic phase growth in hybrid metal extrusion & bonding welds exposed to isothermal annealing or direct current cycling.
Materials & design
Academic article
-
Celotto, Ambra;
Sandnes, Lise;
Grong, Øystein;
Sørhaug, Jørgen Andre;
Stefani, Gaia;
Wan, Di.
(2024)
Cold butt welding of dissimilar aluminum alloys: Characterization and interface bonding conditions.
Materials Science & Engineering: A
Academic literature review
-
Nordahl, Gregory;
Dagenborg, Sivert Johan Vartdal;
Sørhaug, Jørgen Andre;
Nord, Magnus Kristofer.
(2024)
Exploring deep learning models for 4D-STEM-DPC data processing.
Ultramicroscopy
Academic article
-
Nordahl, Gregory;
Dagenborg, Sivert Johan Vartdal;
D'Alessio, Andrea;
Brand, Eric;
Vitaliti, Nikolas;
Trier, Felix.
(2024)
On the effect of precession for magnetic differential phase contrast imaging.
Micron
Academic article
-
Sørhaug, Jørgen Andre;
Vullum, Per Erik;
Holmestad, Randi.
(2023)
Observation Of Al-Cu Interface Instability During Room Temperature Storage.
Microscopy and Microanalysis
Academic article
-
Holmestad, Randi;
Thronsen, Elisabeth;
Kawahara, Yasuhito;
Bergh, Tina;
Sørhaug, Jørgen Andre;
Hell, Christoph Martin.
(2023)
Nucleation and Phase Development of Precipitates in Age-hardenable Aluminium Alloys Studied by 4D-STEM.
Microscopy and Microanalysis
Academic article
-
Elkjær, Aksel Sean;
Sørhaug, Jørgen A;
Ringen, Geir;
Bjørge, Ruben;
Grong, Øystein.
(2022)
Electrical and thermal stability of Al-Cu welds: Performance benchmarking of the hybrid metal extrusion and bonding process.
Journal of Manufacturing Processes
Academic article
-
Celotto, Ambra;
Grong, Øystein;
Holmestad, Randi;
Sørhaug, Jørgen A;
Torgersen, Jan;
Vullum, Per Erik.
(2021)
Preliminary in-situ study of FIB-assisted method for aluminium solid-state welding at the microscale.
Procedia Structural Integrity
Academic article
Report
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Sørhaug, Jørgen Andre.
(2024)
Electron microscopy of aluminium and aluminium-copper welds made using the hybrid metal extrusion & bonding technique.
NTNU
Doctoral dissertation
Outreach
2024
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Academic lectureHolmestad, Randi; Bergh, Tina; Sørhaug, Jørgen Andre; Hell, Christoph Martin; Thronsen, Elisabeth; Bjørge, Ruben. (2024) Advanced electron microscopy – SPED and HAADF-STEM – of age hardenable aluminium alloys. Belgrade academy of Science and Arts ELMINA24 , Belgrade 2024-09-09 - 2024-09-13
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Academic lectureHolmestad, Randi; Bergh, Tina; Sørhaug, Jørgen Andre; Hell, Christoph Martin; Thronsen, Elisabeth; Bjørge, Ruben. (2024) Advanced TEM studies of precipitation in aluminium alloys. AIT AUSTRIAN INSTITUTE OF TECHNOLOGY GMBH Ranshofener Leichtmetalltage 2024 , Saalfelden 2024-09-26 - 2024-09-27
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Academic lectureSørhaug, Jørgen Andre; Elkjær, Aksel Sean; Thronsen, Elisabeth; Bergh, Tina; Grong, Øystein; Vullum, Per Erik. (2024) Microstructural characterisation of Al/Cu joints welded using hybrid metal extrusion & bonding. Georgia Tech ICAA19 - International conference on Aluminium alloys , Atlanta, GA 2024-06-23 - 2024-06-27
2023
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Academic lectureBergh, Tina; Sørhaug, Jørgen Andre; Thronsen, Elisabeth; Frøystein, Kristin; Sunde, Jonas Kristoffer; Vullum, Per Erik. (2023) In situ heating and STEM studies of the evolution of precipitates in an Al-Mg-Si-Cu alloy. INTPART Workshop , Tokyo Institute of Technology 2023-04-14 - 2023-04-15
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Academic lectureBergh, Tina; Sørhaug, Jørgen Andre; Thronsen, Elisabeth; Frøystein, Kristin; Sunde, Jonas Kristoffer; Vullum, Per Erik. (2023) Scanning transmission electron microscopy and in situ heating reveal the development of individual nanoscale precipitates in an Al-Mg-Si-Cu alloy. EMAG MMC , Manchester 2023-07-04 - 2023-07-06
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Academic lectureBergh, Tina; Sørhaug, Jørgen Andre; Thronsen, Elisabeth; Frøystein, Kristin; Sunde, Jonas Kristoffer; Vullum, Per Erik. (2023) Studying the evolution of individual precipitates in an Al-Mg-Si-Cu alloy by in situ heating and scanning precession electron diffraction. LightMAT , Trondheim 2023-06-21 - 2023-06-23
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Academic lectureThronsen, Elisabeth; Bergh, Tina; Sørhaug, Jørgen Andre; Frøystein, Kristin; Wenner, Sigurd; Sunde, Jonas Kristoffer. (2023) Studying precipitation in aluminium alloys using 4D-STEM. Korean Society of Microscopy (KSM) and International Federation of Societies for Microscopy (IFSM) The 20th International Microscopy Congress (IMC20) , Busan 2023-09-10 - 2023-11-15
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Academic lectureHolmestad, Randi; Thronsen, Elisabeth; Kawahara, Yasuhito; Bergh, Tina; Sørhaug, Jørgen Andre; Hell, Christoph Martin. (2023) Nucleation and Phase Development of Precipitates in age-hardenable Aluminium Alloys studied by 4D-STEM. Microscopy Society America Microscopy and Analysis , Minneapolis 2023-07-23 - 2023-07-27
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PosterSørhaug, Jørgen Andre; Korsvold, Håkon; Grong, Øystein; Vullum, Per Erik; Holmestad, Randi. (2023) Multiscale study of a HYB welded Al-Mg-Si-Cu alloy using electron backscattered diffraction and transmission electron microscopy. LightMAT , Trondheim 2023-06-21 - 2023-06-23
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PosterSørhaug, Jørgen Andre; Thronsen, Elisabeth; Grong, Øystein; Vullum, Per Erik; Holmestad, Randi. (2023) Observation of Al-Cu interface instability in a HYB joint TEM sample during room temperature storage. Microscopy & microanalysis , Minneapolis 2023-07-23 - 2023-07-27
2022
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PosterCelotto, Ambra; Grong, Øystein; Holmestad, Randi; Sørhaug, Jørgen A; Vullum, Per Erik; Wan, Di. (2022) Unconventional use of Ga+ FIB and Xe+ Plasma-FIB for performing and investigating microscale cold-welding of dissimilar aluminium alloys. Research School TNNN 1st National Junior Scientist Research Conference in Nanoscience and Nanotechnology , Trondheim 2022-11-30 - 2022-12-02
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PosterSørhaug, Jørgen Andre; Celotto, Ambra; Vullum, Per Erik; Holmestad, Randi. (2022) Scanning transmission electron microscopy investigations on an Al-Al joint interface made using FIB-assisted cold welding. TNNN Konferanse , Trondheim 2022-11-30 - 2022-12-02
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Academic lectureBergh, Tina; Thronsen, Elisabeth; Christiansen, Emil Frang; Frafjord, Jonas; Thorsen, Tor Inge; Nordahl, Gregory. (2022) Scanning precession electron diffraction for phase mapping . Electron diffraction for solving engineering problems 2022-06-21 - 2022-06-23
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LectureCelotto, Ambra; Grong, Øystein; Wan, Di; Vullum, Per Erik; Holmestad, Randi; Sørhaug, Jørgen A. (2022) Cold Pressure Welding of aluminium: conventional and FIB-assisted microscale techniques. ESIS European Structural Integrity Society ECF23 European Conference on Fracture 2022 , Madeira 2022-06-27 - 2022-07-01
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LectureCelotto, Ambra; Grong, Øystein; Holmestad, Randi; Vullum, Per Erik; Wan, Di; Sørhaug, Jørgen A. (2022) Cold bonding aluminium in a Focused Ion Beam microscope: development and qualitative in-situ assessment of the microscale technique. AGFME, GSEMM, IGF, SEIE-GEF 2nd Mediterranean Conference on Fracture and Structural Integrity (MedFract2) , Catania 2022-02-14 - 2022-02-16
2021
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LectureCelotto, Ambra; Grong, Øystein; Holmestad, Randi; Sørhaug, Jørgen A; Torgersen, Jan; Vullum, Per Erik. (2021) Iterative development of a novel technique for in-situ cold welding of aluminium inside the Focused Ion Beam microscope. Universidade do Porto 2nd International Conference of Advanced Joining Processes , Sintra, Portugal 2021-10-21 - 2021-10-22
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Popular scientific lectureCelotto, Ambra; Grong, Øystein; Holmestad, Randi; Sørhaug, Jørgen A; Torgersen, Jan; Vullum, Per Erik. (2021) Preliminary in situ study of FIB-assisted method for aluminium solid-state welding at the microscale. Italian Group of Fracture 26th International Conference on Fracture and Structural Integrity , Turin 2021-05-26 - 2021-05-31
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LectureCelotto, Ambra; Grong, Øystein; Holmestad, Randi; Sørhaug, Jørgen A; Torgersen, Jan; Vullum, Per Erik. (2021) Preliminary in situ study of FIB-assisted method for aluminium solid-state welding at the microscale . Italian Group of Fracture 26th International Conference on Fracture and Structural Integrity , Turin&Web https://www.youtube.com/watch?v=2t_r-BaWwUM&t=4s 2021-05-26 - 2021-05-31
2019
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PosterLysne, Hogne; Ristola, Markus Joel Benjamin; Sørhaug, Jørgen Andre; Di Sabatino Lundberg, Marisa; Holmestad, Randi; Reenaas, Turid Dory. (2019) Tungsten doped silicon for intermediate band solar cells. Norwegian solar cell conference 2019 2019-05-20 - 2019-05-21
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PosterSørhaug, Jørgen A; Lysne, Hogne; Lundberg, Marisa di Sabatino; Reenaas, Turid Dory; Holmestad, Randi. (2019) TEM characterization of W-implanted Si. SuSolTech Norwegian solar cell conference , Son 2019-05-20 - 2019-05-21