Publications

Choose a year: 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006

You can view my Google Scholar profile here.

Coming soon! back to top

Small-scale functional fatigue of a Ni-Mn-Ga Heusler alloy
A. Fareed, J.M. Rosalie, S. Kar, S. Fähler, R. Maaß

Miniaturized bulk metallic glass gripping structures for robotic mobility platforms
P. Bordeenithikasem, K.C. Carpenter, D.C. Hofmann, V.E. White, K.Y. Yee, Q. Rizzardi, J. Maher, R. Maaß

Intermittent cluster dynamics and temporal fractional diffusion in a bulk metallic glass
B. Riechers, A. Das, E. Dufresne, P.M. Derlet, R. Maaß

Microplastic response of 2PP-printed ceramics
J.C. Sänger, B. Riechers, B.R. Pauw, R. Maaß, J. Günster

2024 back to top

Local lattice distortions and chemical short-range order in MoNbTaW
A. Fantin, A.M. Manzoni, H. Springer, R. Darvishi Kamachali, R. Maaß
Materials Research Letters, in press (2024)

Atomic cluster dynamics causes intermittent aging in metallic glasses
Z. Wang, B. Riechers, P.M. Derlet, R. Maaß
Acta Materialia 267, 119730 (2024)

Giant segregation transition as origin of liquid-metal embrittlement in the Fe-Zn system
R. Darvishi Kamachali, T. Wallis, Y. Ikeda, U. Saikia, A. Ahmadian, C.H. Liebscher, T. Hickel, R. Maaß
Scripta Materialia 238, 115758 (2024)

2023 back to top

Constrained incipient phase transformation in Ni-Mn-Ga films: a small-scale design challenge
A. Fareed, J.M. Rosalie, S. Kumar, S. Kar, T. Hickel, S. Fähler, R. Maaß
Materials & Design 233, 112259 (2023)

Silicate glass fracture surface energy calculated from crystal structure and bond-energy data
Holzer, T. Waurischk, J. George, R. Maaß, R. Müller
Journal of Non-Crystalline Solids 622, 122679 (2023)

Segregation-induced transition during early stages of liquid-metal embrittlement in an advanced high-strength steel
Y. Ikeda, H.C. Ni, A. Chakraborty, H. Ghassemi-Armaki, J.M. Zuo, R. Darvishi Kamachali, R. Maaß
Acta Materialia 259, 119243 (2023)

On the elastic microstructure of bulk metallic glasses
B. Riechers, C. Ott, S.M. Das, C.H. Liebscher, K. Samwer, P.M. Derlet, R. Maaß
Materials & Design 229, 11929 (2023)

Growth twins and premartensite microstructure in epitaxial Ni-Mn-Ga films
S. Kara, Y. Ikeda, K. Lünser, T.G. Woodcock, K. Nielsch, H. Reith, R.Maaß, S. Fähler
Acta Materialia 252, 118902 (2023)

Shear-band cavitation determines the shape of the stress-strain curve of metallic glasses
A. Das, C. Ott, D. Pechimuthu, R. Moosavi, M. Stoica, P.M. Derlet, R. Maaß
Physical Review Materials 7, 023602 (2023)

Insight on plastic localization by deformation slip from innovative experimental
and numerical approaches
J.C. Stinville, M.A. Charpagne, R. Maaß, H. Proudhon, W. Ludwig, P.G. Callahan, F. Wang, I.J. Beyerlein, M.P. Echlin, T.M. Pollock
Annual Review of Materials Research 53, 275-317 (2023)

2022 back to top

Optimally rejuvenated model binary glass
P.M. Derlet and R. Maaß
Physical Review Materials 6, 125604 (2022)

Entering a new dimension in powder processing for advanced ceramic shaping
J.C. Sänger, B.R. Pauw, B. Riechers, A. Zocca, J. Rosalie, R. Maaß, H. Sturm, J. Günster
Advanced Materials, 2208653 (2022)

Spatially resolved roughness exponent in polymer fracture
M. Thuy, A. Spyrantis, M. Böhning, U. Niebergall, R. Maaß
Physical Review Materials 6, L090601 (2022)

Intermittent microplasticity in the presence of a complex microstructure
Q. Rizzardi, P.M. Derlet, R. Maaß
Physical Review Materials 6, 073602 (2022)

The Federal Institute of Materials Research and Testing (BAM) – 150 Years of Enabling Scientific and Technological Breakthrough (Editorial)
R. Maaß
Advanced Engineering Materials 24, 2200648 (2022)

In-situ thermal annealing transmission electron microscopy of irradiation induced Fe nanoparticle precipitation in an Fe-Si alloy
Y. Shimada, Y. Ikeda, K. Yoshida, M. Sato, J. Chen, Y. Du, K. Inoue, R. Maaß, Y. Nagai, T.J. Konno
Journal of Applied Physics 131, 164902 (2022)

Internal nucleation tendency and crystal surface energy obtained from bond energies and lattice data
C. Tielemann, S. Reinsch, R. Maaß, J. Deubener, R. Müller
Journal of Non-Crystalline Solids 14, 100093 (2022)

Mild-to-wild plastic transition is governed by athermal screw dislocation slip in bcc Nb
Q. Rizzardi, C. McElfresh, G. Sparks, D. Stauffer, J. Marian, R. Maaß
Nature Communications 13, 1010 (2022)

Early stages of liquid-metal embrittlement in an advanced high-strength steel
Y. Ikeda, R. Yuan, A. Chakraborty, H. Ghassemi-Armaki, J.M. Zuo, R. Maaß
Materials Today Advances 13, 100196 (2022)

2021 back to top

Viscosity and transport in a model fragile metallic glass
P.M. Derlet, H. Bocquet, and R. Maaß
Physical Review Materials 5, 125601 (2021)

Flaw-insensitive fracture of a micrometer-sized brittle metallic glass
R. Qu, R. Maaß, Z. Liu, D. Tönnies, L. Tian, R.O. Ritchie, Z. Zhang, C.A. Volkert
Acta Materialia 218, 117219 (2021)

Microstructure and nanomechanical behavior of sputtered CuNb thin films
M. Abboud, A. Motallebzadeh, Ö. Duygulu, R. Maaß, S. Özerinc
Intermetallics 136, 107249 (2021)

Microstructural signatures of dislocation avalanches in a high-entropy alloy
Q. Rizzardi, P.M. Derlet and R. Maaß
Physical Review Materials 5, 043604 (2021)

Microplasticity in a fragile model binary glass
P.M. Derlet and R. Maaß
Acta Materialia 209, 116771 (2021)

Evidence of room-temperature shear-deformation in a Cu-Al intermetallic
Y. Ikeda, J. Mancias, B. Gan, R. Maaß
Scripta Materialia 190, 126-130 (2021)

Strain-dependent shear-band structure in a Zr-based bulk metallic glass
C. Liu, Y. Ikeda, R. Maaß
Scripta Materialia 190, 75-79 (2021)

2020 back to top

Split-vacancy defect complexes of oxygen and vacancies in hcp and fcc cobalt
S. Honrao, Q. Rizzardi, R. Maaß, D.R. Trinkle, R.G. Hennig
Physical Review Materials 4, 103608 (2020)

Beyond serrated flow in bulk metallic glasses: What comes next? (Invited Article)
R. Maaß
Metallurgical and Materials Transactions A 51, 5597–5605 (2020)

Structural dynamics and rejuvenation during cryogenic cycling in a Zr-based metallic glass
A. Das, E. Dufresne, R. Maaß
Acta Materialia 196, 723-732 (2020)

Applied-force oscillations in avalanche dynamics
L.W. McFaul IV, G. Sparks, J. Sickle, J.T. Uhl, W.J. Wright, R. Maaß, D.A. Dahmen
Physical Review E 101, 053003 (2020)

Impact of Integrating Computation into Undergraduate Curriculum: New Modules and Long-Term Trends
G.M. Lu, D.R. Trinkle, A. Schleife, C. Leal, J.A. Krogstad, R. Maaß, P. Bellon, P. Huang, N. Pery, M. West, T. Bretl, G.L. Herman
American Society for Engineering Education (ASEE) 127th Annual Conference & Exposition, Paper ID #29797, Virtual Conference, June 22-26 (2020)

Scale-dependent pop-ins in nanoindentation and scale-free plastic fluctuations in microcompression
J. Shimanek, Q. Rizzardi, G. Sparks, P.M. Derlet, R. Maaß
Journal of Materials Research 35, 196-205 (2020)

Emergent structural length scales in a model binary glass – the micro-second molecular dynamics time-scale regime (Invited Article – Jubilee Volume)
P.M. Derlet and R. Maaß
Journal of Alloys and Compounds 821, 153209 (2020)

2019 back to top

Stress breaks universal aging behavior in a metallic glass
A. Das, P.M. Derlet, C. Liu, E. Dufresne, R. Maaß
Nature Communications 10, 5006 (2019)

Avalanche statistics and the intermittent-to-smooth-transition in microplasticity
G. Sparks, Y. Cui, G. Po, Q. Rizzardi, J. Marian, R. Maaß
Physical Review Materials (Rapid Communication) 3, 080601(R) (2019)

Shear-band cavities and strain hardening in a metallic glass revealed with phase-contrast x-ray tomography
C. Liu, A. Das, W. Wang, S. Küchemann, P. Kenesei, R. Maaß
Scripta Materialia 170, 29-33 (2019)

Impact of Computational Curricular Reform on Non-participating Undergraduate
Courses: Student and Faculty Perspective
C.W. Lee, A. Schleife, D.R. Trinkle, J.A. Krogstad, R. Maaß, P. Bellon, J.K. Shang, C. Leal, M. West, T. Bretl, G.L. Herman, S. Tang
American Society for Engineering Education (ASEE) 126th Annual Conference & Exposition, Paper ID #27146, Tampa, Florida, June 16-19 (2019)

Shear-band structure and chemistry in a Zr-based metallic glass probed with nano-beam x-ray fluorescence and transmission electron microscopy
C. Liu, Z. Cai, X. Xia, V. Roddatis, R. Yuan, J.M. Zuo, R. Maaß
Scripta Materialia 169, 23-27 (2019)

Effects of orientation and pre-deformation on velocity profiles of dislocation avalanches in gold microcrystals
G. Sparks and R. Maaß
The European Physical Journal B 92, 15 (2019)


2018 back to top

Nontrivial scaling exponents of dislocation avalanches in microplasticity
G. Sparks and R. Maaß
Physical Review Materials (Rapid Communication and Editors’ Suggestion) 3, 120601(R) (2018)

Energy storage in metallic glasses via flash-annealing
S. Küchemann, P.M. Derlet, C. Liu, D. Rosenthal, G. Sparks, W.S. Larson, R. Maaß
Advanced Functional Materials 28, 1805385 (2018)

Local volume as a robust structural measure and its connection to icosahedral content in a model binary amorphous system
P.M. Derlet and R. Maaß
Materialia 3, 97-106 (2018)

Temperature rise from fracture in a Zr-based metallic glass
A. Das, P. Kagebein, S. Küchemann, R. Maaß
Applied Physics Letters 112, 261905 (2018)

Computational Curriculum for MatSE Undergraduates and the Influence on Senior Classes
X. Zhang, A. Schleife, A. Ferguson, P. Bellon, T. Bretl, G.L. Herman, J.A. Krogstad, R. Maaß, C. Leal, D.R. Trinkle, M. West, J.Ku. Shang
American Society for Engineering Education (ASEE) 125th Annual Conference & Exposition, Paper ID #22025, Salt Lake City, Utah, June 24-27 (2018)

Elastic fluctuations and structural heterogeneities in metallic glasses
C. Liu and R. Maaß
Advanced Functional Materials 28, 1800388 (2018)

Shapes and velocity relaxation of dislocation avalanches in Au and Nb microcrystals
G. Sparks and R. Maaß
Acta Materialia 152, 86-95 (2018)

Fast slip velocity in a high-entropy alloy
Q. Rizzardi, G. Sparks, R. Maaß
JOM 70, 1088-1093 (2018)

Shear banding leads to accelerated aging dynamics in a metallic glass
S. Küchemann, C. Liu, E.M. Dufresne, J. Shin, R. Maaß
Physical Review B 97, 014204 (2018)

Micro-plasticity and recent insights from intermittent and small-scale plasticity (Invited Review Article)
R. Maaß and P.M. Derlet
Acta Materialia 143, 338-363 (2018)

Thermally-activated stress relaxation in a model amorphous solid and the formation of a system-spanning shear event
P.M. Derlet and R. Maaß
Acta Materialia 143, 205-213 (2018)


2017 back to top

Shear-band thickness and shear-band cavities in a Zr-based metallic glass
C. Liu, V. Roddatis, P. Kenesei, R. Maaß
Acta Materialia 140, 206-216 (2017)

Linking macroscopic rejuvenation to nano-elastic fluctuations in a metallic glass
P. Ross, S. Küchemann, P.M. Derlet, H-B. Yu, W. Arnold, P. Liaw, K. Samwer, R. Maaß
Acta Materialia 138, 111-118 (2017)

Computational Curriculum for MatSE Undergraduates
A. Kononov, P. Bellon, T. Bretl, A.L. Ferguson, G.L. Herman, K.A. Kilian, J.A. Krogstad, C. Leal, R. Maaß, A. Schleife, J.K. Shang, D.R. Trinkle, and M. West
American Society for Engineering Education (ASEE) 124th Annual Conference & Exposition, Paper ID #19440, Columbus, OH, June 25-28 (2017)

Thermal processing and enthalpy storage of a binary amorphous solid: a molecular dynamics study (Invited Paper)
P.M. Derlet and R. Maaß
Journal of Materials Research 32, 2668-2679 (2017)

Gamma relaxation in bulk metallic glasses
S. Küchemann and R. Maaß
Scripta Materialia 137, 5-8 (2017)

Spatiotemporal slip dynamics during deformation of gold micro-crystals
G. Sparks, P. Sudharshan Phani, U. Hangen, R. Maaß
Acta Materialia 122, 109-119 (2017)


2016 back to top

Critical stress statistics and a fold catastrophe in intermittent crystal plasticity
P.M. Derlet and R. Maaß
Physical Review E 94, 033001 (2016)

The stress statistics of the first pop-in or discrete plastic event in crystal plasticity
P.M. Derlet and R. Maaß
Journal of Applied Physics 120, 25511 (2016)


2015 back to top

Unified Criterion for Temperature-Induced and Strain-Driven Glass Transition in Metallic Glass
H-B. Yu, R. Richert, R. Maaß, K. Samwer
Physical Review Letters 115, 135701 (2015)

Universal power-law strengthening in metals
P.M. Derlet and R. Maaß
Scripta Materialia 109, 19-22 (2015)

Long range stress fields and cavitation along a shear band in a metallic glass – The local origin of fracture
R. Maaß, P. Birckigt, C. Borchers, K. Samwer, C.A. Volkert
Acta Materialia 98, 94-102 (2015)

Dynamic properties of major shear bands in Zr-Cu-Al bulk metallic glasses
P. Thurnheer, R. Maaß, K.J. Laws, S. Pogatscher, J.F. Löffler
Acta Materialia 96, 428-436 (2015)

Strain induced fragility transition in metallic glass
H-B. Yu, R. Richert, R. Maaß, K. Samwer
Nature Communications 6, 7179 (2015)

Rate-dependent shear-band initiation in a metallic glass
D. Tönnies, K. Samwer, P.M. Derlet, C.A. Volkert, R. Maaß
Applied Physics Letters 106, 171907 (2015)

Slip statistics of dislocation avalanches under different loading modes
R. Maaß, M. Wraith, J.T. Uhl, J.R. Greer, K.A. Dahmen
Physical Review E 91, 042403 (2015)

Shear-band dynamics in metallic glasses
R. Maaß and J.F. Löffler
Advanced Functional Materials 25, 2353–2368 (2015)

Crystal size effect in two dimensions – Influence of size and shape
R. Maaß, C.A. Volkert, P.M. Derlet
Scripta Materialia 102, 27-30 (2015)

Independence of Slip Velocities on Applied Stress in Small Crystals
R. Maaß, P.M. Derlet, J.R. Greer
Small 11, 341-351 (2015)

A probabilistic explanation for the size effect in crystal plasticity
P.M. Derlet and R. Maaß
Philosophical Magazine 95, 1829–1844 (2015)


2014 back to top

A single shear band in a metallic glass – Local core and wide soft zone
R. Maaß, K. Samwer, W. Arnold, C.A. Volkert
Applied Physics Letters 105, 171902 (2014)

Room Temperature Homogeneous Ductility of Micrometer-sized Metallic Glass
D. Tönnies, R. Maaß, C.A. Volkert
Advanced Materials 26, 5715-5721 (2014)

Linking high- and low-temperature plasticit in bulk metallic glasses II – use of a log normal barrier energy distribution and a mean-field description of high temperature plasticity
P.M. Derlet and R. Maaß
Philosophical Magazine 94, 2776-2803 (2014)

Compositional dependence of shear-band dynamics in the Zr–Cu–Al bulk metallic glass system
P. Thurnheer, R. Maaß, S. Pogatscher, J.F. Löffler
Applied Physics Letters 104, 101910 (2014)

Deformation response of ferrite and martensite in a dual-phase steel
H. Ghassemi-Armaki, R. Maaß, S. P. Bhat, S. Sriram, J. Greer, K.S. Kumar
Acta Materialia 62, 197-211 (2014)


2013 back to top

Small-scale plasticity – Insights into dislocation avalanche velocities
R. Maaß, P.M. Derlet, J.R. Greer
Scripta Materialia 69, 586-589 (2013)

Linking high- and low temperature plasticity in bulk metallic glasses – thermal activation, extreme value statistics and kinetic freezing
P.M. Derlet and R. Maaß
Philosophical Magazine 93, 4232-4263 (2013)

Fatigue deformation of microsized metallic glasses
D. Jang, R. Maaß, G.Wang, P.K. Liaw, J.R. Greer
Scripta Materialia 68, 773-776 (2013)

Micro-plasticity and intermittent dislocation activity in a simplified micro-structural model
P.M. Derlet and R. Maaß
Modelling and Simulation in Materials Science and Engineering 21, 035007 (2013)


2012 back to top

Ultrahigh Strength of Dislocation-Free Ni3Al Nanocubes
R. Maaß, L. Meza, B. Gan, S. Tin, J.R. Greer
Small 8, 1869-1875 (2012)

Shear-band arrest and stress overshoots during inhomogeneous flow in a metallic glass
R. Maaß, D. Klaumuenzer, G. Villard, P.M. Derlet, J.F. Löffler
Applied Physics Letters 100, 071904 (2012)

The Boson peak of model glass systems and its relation to atomic structure
P.M. Derlet, R. Maaß, J.F. Löffler
The European Physical Journal B 85, 148 (2012)

In-situ characterization of the dislocation-structure evolution in Ni micro-pillars
R. Maaß and M.D. Uchic
Acta Materialia 60, 1027-1037 (2012)

Thermal-activation model for freezing and the elastic robustness of bulk metallic glasses
P.M. Derlet and R. Maaß
Physical Review B – Rapid Communications 84, 220201 (2012)

Single shear-band plasticity in a bulk metallic glass at cryogenic temperatures
R. Maaß, D. Klaumuenzer, E. I. Preiß, P.M. Derlet, J.F. Löffler
Scripta Materialia 66, 231-234 (2012)

Nanoindentation and nano-compression testing of Ni3Al precipitates
B. Gan, H. Murakami, R. Maaß, L. Meza, J.R. Greer, T. Ohmura, S. Tin
Superalloys, 83 (2012)

The Role of Disorder and the Elastic Robustness of Bulk Metallic Glasses
P.M. Derlet, R.Maaß
Mater. Res. Soc. Symp. Proc., 1520-NN07-06 (2012)

2011 back to top

Probing Shear-Band Initiation in Metallic Glasses
D. Klaumuenzer, A. Lazarev, R. Maaß, F.D. Dalla Torre, J.F. Löffler, A. Vinogradov
Physical Review Letters 107, 185502 (2011)

Propagation dynamics of individual shear bands during inhomogeneous flow in a Zr-based bulk metallic glass
R. Maaß, D. Klaumuenzer, J.F. Löffler
Acta Materialia 59, 3205-3213 (2011) – Nature Materials Research Highlight 10, 338 (2011)

Stick-slip dynamics and recent insights into shear banding in metallic glasses
D. Klaumuenzer, R. Maaß, J.F. Löffler
Journal of Materials Research 26, 1453-1463 (2011)

2010 back to top

Stick–slip behavior of serrated flow during inhomogeneous deformation of bulk metallic glasses
F.D. Dalla Torre, D. Klaumuenzer, R. Maaß, J.F. Löffler
Acta Materialia 58, 3742-3750 (2010)

Temperature-dependent shear band dynamics in a Zr-based bulk metallic glass
D. Klaumuenzer, R. Maaß, F.H. Dalla Torre, J.F. Löffler
Applied Physics Letters 96, 061901 (2010)

On the plasticity of small-scale nickel–titanium shape memory alloys
C.P. Frick, B.G. Clark, A.S Schneider, R. Maaß, S. Van Petegem, H. Van Swygenhoven
Scripta Materialia 62, 492-495 (2010)

2009 back to top

Smaller is stronger – The effect of strain hardening
R. Maaß, S. Van Petegem, D. Ma, J. Zimmermann, D. Grolimund, F. Roters, H. Van Swygenhoven, D. Raabe
Acta Materialia 57, 5996-6005 (2009)

The Vibrational Modes of Model Bulk Metallic Glasses
P.M. Derlet, R. Maaß, J.F. Löffler
Mater. Res. Soc. Symp. Proc., 1224-GG05-01 (2009)

In-situ Laue Diffraction of Metallic Micropillars
R. Maaß, S. Van Petegem, C.N. Borca, H. Van Swygenhoven
Materials Science and Engineering A 524, 40-45 (2009)

On the Microstructure of Nanoporous Gold – An X-ray Diffraction Study
S. Van Petegem, S. Brandstetter, R. Maaß, A.M. Hodge, B.S. El-Dasher, J. Biener, B. Schmitt, C.N. Borca, H. Van Swygenhoven
NanoLetters 9, 1158-1163 (2009)

2008 back to top

In-situ time resolved Laue diffraction during micro-compression experiments
R. Maaß, S. Van Petegem, H. Van Swygenhoven, D. Grolimund, P.M. Derlet
Advances in Synchrotron Radiation 1, 157-157 (2008)

On the initial microstructure of metallic micropillars
R. Maaß, S. Van Petegem, J. Zimmermann, C.N. Borca, H. Van Swygenhoven
Scripta Materialia 59, 471-474 (2008)

Crystal rotation in Cu single crystal micropillars – In situ Laue and electron backscatter diffraction
R. Maaß, S. Van Petegem, D. Grolimund, H. Van Swygenhoven, D.Kiener, G. Dehm
Applied Physics Letters 92, 071905 (2008)

2007 back to top

A strong micropillar containing a low angle grain boundary
R. Maaß, S. Van Petegem, D. Grolimund, H. Van Swygenhoven, M.D. Uchic
Applied Physics Letters 91, 131909 (2007)

Time-Resolved Laue Diffraction of Deforming Micropillars
R. Maaß, S. Van Petegem, H. Van Swygenhoven, P.M. Derlet, C.A. Volkert, D. Grolimund
Physical Review Letters 99, 145505 (2007)

2006 back to top

Defect structure in micropillars using x-ray microdiffraction
R. Maaß, D. Grolimund, S. Van Petegem, M. Willimann, M. Jensen, H. Van Swygenhoven, T. Lehnert, M.A.M. Gijs, C.A. Volkert, E.T. Lilleodden, R. Schwaiger
Applied Physics Letters 89, 151905 (2006)

Infuence of hydrogen on the growth of FePt thin films
R. Maaß, M. Weisheit, S. Faehler, L. Schultz
Journal of Applied Physics 100, 073910 (2006)

From Micro- to Marcoplasticity
S. Brandstetter, H. Van Swygenhoven, S. Van Petegem, B. Schmitt, R. Maaß, P.M. Derlet
Advanced Materials 18, 1545-1548 (2006)