Prof. Dr. Lorenz Kienle

Professional Career

Contact

Prof. Dr. Lorenz Kienle
Christian-Albrechts-Universität zu Kiel (CAU Kiel)
Synthesis and Real Structure
Institute for Materials Science
Kaiserstr. 2, 24143 Kiel
Phone. +49 (0) 431 880 6176
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Website: Link

Projects and Positions

Description		Role
	A6 - Microstructure and Structural Change of Magnetoelectric and Piezotronic Sensors	Project lead

CRC-related Publications

K. Pingen, A. M. Hinz, P. Sandström, N. Wolff, L. Kienle, L. Scipioni, J. Greer, E. von Hauff, L. Hultman, J. Birch, C.-L. Hsiao: High Growth Rate Magnetron Sputter Epitaxy of GaN Using a Solid Ga Target, Vacuum , vol. 220, 112852, 2024.

N. Wolff, G. Schönweger, I. Streicher, Md R. Islam, N. Braun, P. Straňák, L. Kirste, M. Prescher, A. Lotnyk, H. Kohlstedt, S. Leone, L. Kienle, S. Fichtner: Demonstration and STEM Analysis of Ferroelectric Switching in MOCVD-Grown Single Crystalline Al0.85Sc0.15N, Adv. Phys. Res., 2300113, 2024.

K. Pingen, S. Neuhaus, N. Wolff, L. Kienle, A Žukauskaitė, E. von Hauff, A. M. Hinz: Influence of Si(111) Substrate Off-Cut on AlN Film Crystallinity Grown by Magnetron Sputter Epitaxy, Journal of Applied Physics, vol. 134, issue 2, 2023.

G. Schönweger, N. Wolff, Md R. Islam, M. Gremmel, A. Petraru, L.Kienle, H.Kohlstedt, S. Fichtner: In-Grain Ferroelectric Switching in Sub-5 nm Thin Al0.74Sc0.26N Films at 1 V, Advanced Science, 2302296, 2023.

V. Schell, E. Spetzler, N. Wolff, L.Bumke, L. Kienle, J. McCord, E. Quandt, D. Meyners: Exchange Biased Surface Acoustic Wave Magnetic Field Sensors, Scientific Reports, vol. 13, no. 8446, 2023.

R. Guido, P. D. Lomenzo, Md R. Islam, N. Wolff, M. Gremmel, G. Schönweger, H. Kohlstedt, L. Kienle, T. Mikolajick, S. Fichtner, U. Schroeder: Thermal Stability of the Ferroelectric Properties in 100 nm-Thick Al0.72Sc0.28N, ACS Appl. Mater. Interfaces, vol. 15, issue 5, p. 7030–7043, 2023.

Md R. Islam, G. Schönweger, N. Wolff, A. Petraru, H. Kohlstedt, S. Fichtner, L. Kienle: A Comparative Study of Pt/Al0.72Sc0.28N/Pt-Based Thin-Film Metal-Ferroelectric-Metal Capacitors on GaN and Si Substrates, ACS Appl. Mater. Interfaces 15, 35, 41606–41613, 2023.

G. Masciocchi, J. W. van der Jagt, M.-A. Syskaki, A. Lamperti, N. Wolff, A. Lotnyk, J. Langer, L. Kienle, G. Jakob, B. Borie, A. Kehlberger, D. Ravelosona, M. Kläui: Control of Magnetoelastic Coupling in Ni/Fe Multilayers using He+ ion Irradiation, Appl. Phys. Lett., vol. 121, issue 18 , 182401, 2022.

G. Schönweger, Md. R. Islam, N. Wolff, A. Petraru, L. Kienle, H.Kohlstedt, S.Fichtner: Ultrathin Al1−xScxN for Low-Voltage-Driven Ferroelectric-Based Devices, PSS rapid research letters, vol. 17, issue 1, 2200312, 2023.

N. Wolff, M. R. Islam, L. Kirste, S. Fichtner, F. Lofink, A. Žukauskaitė, L. Kienle: Al1−xScxN Thin Films at High Temperatures: Sc-Dependent Instability and Anomalous Thermal Expansion, Micromachines, no. 13, issue 8 , 01282, 2022.

M. T. Bodduluri , B.Gojdka , N.Wolff , L. Kienle , T. Lisec, F. Lofink: Article Investigation of Wafer-Level Fabricated Permanent Micromagnets for MEMS, Micromachines , no. 13, issue 5, pp. 742, 2022.

J. Su , S. Fichtner , M. Zubair Ghori , N. Wolff , M. R. Islam , A. Lotnyk , D. Kaden , F. Niekiel, L. Kienle, B. Wagner, F. Lofink: Growth of Highly c-Axis Oriented AlScN Films on Commercial Substrates, Micromachines , no. 13, issue 5, pp. 783, 2022.

G. Schönweger, A. Petraru, Md R. Islam, N. Wolff, B.t Haas, A. Hammud, C. Koch, L. Kienle, H. Kohlstedt, S. Fichtner: From Fully Strained to Relaxed: Epitaxial Ferroelectric Al1-xScxN for III-N Technology, Advanced Functional Materials, no. 32, issue 21 , pp. 2109632, 2022.

N. Wolff, T. Braniste, H.Krüger, S. Mangelsen, Md R.Islam, U. Schürmann, L. M. Saure, F. Schütt, S. Hansen, H.Terraschke, R.Adelung, I. Tiginyanu, L. Kienle: Synthesis and Nanostructure Investigation of Hybrid β-Ga2O3/ZnGa2O4 Nanocomposite Networks with Narrow-Band Green Luminescence and High Initial Electrochemical Capacity, Small, vol. 19, issue 18, 2207492, 2023.

L. Bumke, N. Wolff, C. Chluba, T. Dankwort, L. Kienle, E. Quandt: Coherent Precipitates as a Condition for Ultra-Low Fatigue in Cu-Rich Ti53.7Ni24.7Cu21.6 Shape Memory Alloys, Shape Memory and Superelasticity, volume 7, pp. 526–540, 2021.

P. Jordt, N. Wolff, S. B. Hrkac, S. Shree, D. Wang, R. J. Harder, C. Kübel, R. Adelung, O. G. Shpyrko, O. M. Magnussen, L. Kienle, B. M. Murphy: Visualizing Intrinsic 3D-Strain Distribution in Gold Coated ZnO Microstructures by Bragg Coherent X-Ray Diffraction Imaging and Transmission Electron Microscopy with Respect to Piezotronic Applications, Advanced Electronic Materials, vol. 7, issue 11, 2100546, 2021.

P. Pop-Ghe, N. Wolff, A. Rubab, L. Kienle, E. Quandt: Tailoring Growth Modes by Excess Alkali Addition in Magnetron Sputtered Potassium Sodium Niobate Thin Films, Materials Today Communications (2021), vol. 27, 102221, 2021.

P. Jordt, S. B. Hrkac, J. Gröttrup, A. Davydok, C. Krywka, N. Wolff, L. Kienle, R. Adelung, O. M. Magnussen, B. M. Murphy: Local Strain Distribution in ZnO Microstructures Visualized with Scanning Nano X-Ray Diffraction and Impact on Electrical Properties, Advanced Engineering Materials, vol. 23, issue 11, 110871, 2021.

M.R. Islam, N. Wolff, M. Yassine, G. Schönweger, B. Christian, H. Kohlstedt, O. Ambacher, F. Lofink, L. Kienle, S. Fichtner: On the Exceptional Temperature Stability of Ferroelectric Al1-xScxN Thin Films, Applied Physics Letters, vol. 118, issue 23, 232905, 2021.

N. Wolff, P. Jordt, J. Jetter, H. Vogt, A. Lotnyk, K. Seemann, S. Ulrich, E. Quandt, B. M. Murphy, L. Kienle: Nanostabilization of Tetragonal Distorted FeCo Variants in Ultra-Thin FeCo/TiN Multilayer Films, Materials Characterization, vol. 172, 110871, 2021.

N. Wolff, S. Fichtner, B. Haas, M.R. Islam, F. Niekiel, M. Kessel, O. Ambacher, C. Koch, B. Wagner, F. Lofink, L. Kienle: Atomic Scale Confirmation of Ferroelectric Polarization Inversion in Wurtzite-Type AlScN, Journal of Applied Physics, vol. 129, issue 3, 034103, 2021.

S. M. Curtis, N. Wolff, D. Dengiz, H. Lewitz, J. Jetter, L. Bumke, P. Hayes, E. Yarar, L. Thormählen, L. Kienle, D. Meyners, E. Quandt: Integration of AlN Piezoelectric Thin Films on Ultralow Fatigue TiNiCu Shape Memory Alloys, Journal of Materials Research 35, no. 10, pp. 1298–1306, 2020.

L. Siebert, N. Wolff, N. Ababii, M. Terasa, O. Luopan, A. Vahl, V. Duppel, H. Qiu, M. Tienken, M. Mirabelli, V. Sontea, F. Faupel, L. Kienle, R. Adelung: Facile Fabrication of Semiconducting Oxide Nanostructures by Direct Ink Writing of Readily Available Metal Microparticles and their application as Low Power Acetone Gas Sensors, Nano Energy, vol. 70, issue 2, 104420, 2020.

X. Tao, H. Jin, M. Mintken, N. Wolff, Y. Wang, R. Tao, Y. Li, H. Torun, J. Xie, J. Luo, J. Zhou, Q. Wu, S. Dong, J. Luo, L. Kienle, R. Adelung, Y. K. Mishra, Y. Q. Fu: Three-Dimensional Tetrapodal ZnO Microstructured Network Based Flexible Surface Acoustic Wave Device for Ultraviolet and Respiration Monitoring Applications, ACS Applied Nano Materials, vol. 3, issue 2, pp. 1468–1478, 2020.

N. Wolff, V. Ciobanu, M. Enachi, M. Kamp, T. Braniste, V. Duppel, S. Shree, S. Raevschi, M. Mendina-Sánchez, R. Adelung, G. Schmidt, L. Kienle, I. Tiginyanu: Advanced Hybrid GaN/ZnO Nanoarchitectured Microtubes for Fluorescent Micromotors Driven by UV Light, small, vol. 16, issue 2, 1905141, 2019.

S. Fichtner, N. Wolff, F. Lofink, L. Kienle, B. Wagner: AlScN: A III-V Semiconductor Based Ferroelectric, Journal of Applied Physics, vol. 125, issue 11, 114103, 2019.

N. Wolff, V. Hrkac, J. Ditto, V. Duppel, Y. Mishra, D. Johnson, R. Adelung, L. Kienle: Crystallography at the Nanoscale: Planar Defects in ZnO Nanospike, Journal of Applied Crystallography, vol. 52, pp. 1009-1015, 2019.

N. Wolff, P. Jordt, T. Braniste, V. Popa, E. Monaico, V. Ursaki, A. Petraru, R. Adelung, B. Murphy, L. Kienle, I. Tiginyanu: Modulation of Electrical Conductivity and Lattice Distortions in Bulk HVPE-Grown GaN, ECS Journal of Solid State Science and Technology, vol. 8, pp. 141–146, 2019.

E. Hadland, H. Jang, N. Wolff, R. Fischer, A. Lygo, G. Mitcheson, D. Li, L. Kienle, D. Cahill, D. Johnson: Ultralow Thermal Conductivity of Turbostratically Disordered MoSe2 Ultra-Thin Films and Implications for Heterostructures, Nanotechnology, vol. 30, no. 28, 285401, 2019.

O. Lupan, V. Postica, N. Wolff, J. Su, F. Labat, I. Ciofini, H. Cavers, R. Adelung, O. Polonskyi, F. Faupel, L. Kienle, B. Viana, T. Pauporté: Low-Temperature Solution Synthesis of Au-Modified ZnO Nanowires for Highly Efficient Hydrogen Nanosensors, ACS Applied Materials and Interfaces, vol. 11, issue 35, pp. 32115-32126, 2019.

V. Postica, I. Paulowicz, O. Lupan, F. Schütt, N. Wolff, A. Cojocaru, YK. Mishra, L. Kienle, R. Adelung: The Effect of Morphology and Functionalization on UV Detection Properties of ZnO Networked Tetrapods and Single Nanowires, Vacuum, vol. 166, pp. 393-398, 2019.

I. Paulowicz, V. Postica, O. Lupan, N. Wolff, S. Shree, A. Cojocaru, M. Deng, Y. K. Mishra, I. Tiginyanu, L. Kienle, R. Adelung: Zinc Oxide Nanotetrapods with Four Different Arm Morphologies for Versatile Nanosensors, Sensors and Actuators B: Chemical, vol. 262, pp. 425-435, 2018.

D. Smazna, J. Rodrigues, S. Shree, V. Postica, G. Neubüser, A. F. Martins, N. B. Sedrine, N. K. Jena, L. Siebert, F. Schütt, O. Lupan, R. Ahuja, M. R. Correia, T. Monteiro, L. Kienle, Y. Yang, R. Adelung, Y. K. Mishra: Buckminsterfullerene Hybridized Zinc Oxide Tetrapods: Defects and Charge Transfer Induced Optical and Electrical Response, Nanoscale, vol. 10, issue 21, pp. 10050-10062, 2018.

O. Lupan, N. Wolff, V. Postica, T. Braniste, I. Paulowicz, V. Hrkac, Y. K. Mishra, I. Tiginyanu, L. Kienle, R. Adelung: Properties of a Single SnO2:Zn2SnO4 - Functionalized Nanowire Based Nanosensor, Ceramics International, vol. 44, issue 5, pp. 4859-4867, 2018.

O. Lupan, V. Postica, R. Adelung, F. Labat, I. Ciofini, U. Schürmann, L. Kienle, L. Chow, B. Viana, T. Pauporté: Functionalized Pd/ZnO Nanowires for Nanosensors, Physica Status Solidi, RRL, vol. 12, issue 1, 2018.

M. Hoppe, O. Lupan, V. Postica, N. Wolff, V. Duppel, L. Kienle, I. Tiginyanu, R. Adelung: ZnAl2O4-Functionalized Zinc Oxide Microstructures for Highly Selective Hydrogen Gas Sensing Applications, Physica Status Solidi A, vol. 215, issue 7, 2018.

U. Schürmann, C. Chluba, N. Wolff, D. Smazna, R. Lima de Miranda, P. Junker, R. Adelung, E. Quandt, L. Kienle: Functional NiTi Grids for in situ Straining in the TEM, Ultramicroscopy, vol. 182, pp. 10-16, 2017.

D. Smazna, N. Wolff, S. Shree, F. Schütt, Y.K. Mishra, L. Kienle, R. Adelung: Enhancing the Conductivity of ZnO Micro- and Nanowire Networks with Gallium Oxide, IEEE 7th International Conference Nanomaterials: Application and Properties (NAP), Odessa, pp. 01FNC07-1-01FNC07-5, 2021.

S. Fichtner, N. Wolff, G. Krishnamurthy, A. Petraru, S. Bohse, F. Lofink, S. Chemnitz, H. Kohlstedt, L. Kienle, B. Wagner: Identifying and Overcoming the Interface Originating C-Axis Instability in Highly Sc Enhanced AlN for Piezoelectric Micro-Electromechanical Systems, Journal of Applied Physics, vol. 122, issue 3, 035301, 2017.

S. Kaps, S. Bhowmick, J. Gröttrup, V. Hrkac, D. Stauffer, H. Guo, O. L. Warren, J. Adam, L. Kienle, A. M. Minor, R. Adelung, Y. K. Mishra: Piezoresistive Response of Quasi-One-Dimensional ZnO Nanowires Using an in Situ Electromechanical Device, Acs Omega, 2(6), pp. 2985-2993, 2017.

E. Yarar, V. Hrkac, C. Zamponi, A. Piorra, L. Kienle, E. Quandt: Low Temperature Aluminum Nitride Thin Films for Sensory Applications, AIP Advances, 6 , 075115, 2016.

M. Abes, C. T. Koops, S. B. Hrkac, J. McCord, N. O. Urs, N. Wolff, L. Kienle, W. J. Ren, L. Bouchenoire, B. M. Murphy, O. M. Magnussen: Domain Structure and Reorientation in CoFe2O4, Physical Review B 93 , 195427, 2016.

E. Yarar, S. Salzer, V. Hrkac, A. Piorra, M. Höft, R. Knöchel, L. Kienle, E. Quandt: Inverse Bilayer Magnetoelectric Thin Film Sensor, Applied Physics Letters, vol. 109, issue 2, 2016.