Probing the Melting Transitions in Phase-Change Superlattices via Thin Film Nanocalorimetry
J. Zhao, A.I. Khan, M.Y. Efremov, Z. Ye, X. W, K. Kim, Z. Lee, H.S.P. Wong, E. Pop, and L.H. Allen. Nano Letters. 23(10), 4587-4594, (2023)
Exploring “No Man’s Land”—Arrhenius Crystallization of Thin‐Film Phase Change Material at 1 000 000 K s− 1 via Nanocalorimetry
J. Zhao, J. Hui, Z. Ye, T. Lai, M. Efremov, H. Wang, L. Allen. (2022). Adv. Mater. Interfaces, 9(23), (2022)
Critical Size for Bulk-to-discrete Transition in 2D Aliphatic Layers: Abrupt Size Effect Observed via Calorimetry and Solid-state 13C NMR
Z. Ye, L. de la Rama, M. Efremov, A. Sutrisno, L. Allen, J. Phys. Chem C, 121, 25 (2017).
Approaching the Size Limit of Organometallic Layers: Synthesis and Characterization of Highly Ordered Silver-Thiolate Lamellae with Ultra-short Chain Lengths
Z. Ye, L. de la Rama, M. Efremov, J-M. Zuo, L. Allen, Dalton Transactions, 45 (2016).
Application of In Situ Resistance and Nanocalorimetry Measurements for Nanoelectronic Thin Film Materials
Z. Ye, Z. Ma, L. Allen, in Metrology and Diagnostic Techniques for Nanoelectronics (CRC Press, 2016), ISBN 978-981-4745-08-6.
Nanocalorimetry Study of the Evolution of Melting Characteristics of Single Layer Silver Alkanethiolate Lamella: Fast Heating/Cooling and Electrical Annealing
Z. Ye, L. de la Rama, L. Hu, M. Efremov, L. Allen, Thermochimica Acta, Chip Calorimetry Special Issue, 603 (2015).
Size Effect and Odd-Even Alternation in the Melting of Single and Stacked AgSCn Layers: Synthesis and Nanocalorimetry Measurements
L. de la Rama, L. Hu, Z. Ye, M. Efremov, L. Allen, Journal of the American Chemical Society, 135 (2013).
Metastable Phase Formation in the Au-Si System via Ultrafast Nanocalorimetry
M. Zhang, J. Wen, M. Efremov, E. Olson, S. Zhang, L. Hu, L. de la Rama, R. Kummamuru, K. Kavanag, Z. Ma, L. Allen, Journal of Applied Physics, 111 (2012).
Anomalous transitions of DODAB using fast scanning liquid calorimetry
L. de la Rama, L. Hu, M. Efremov, E. Olson, P. Nealey, M. Mclean, S. Sligar and L. Allen, Thermochimica Acta Special Issue: Interplay Between Nucleation, Crystallization, and the Glass Transition, 522 (2011).
Synthesis and Characterization of Single-layer Silver Decanethiolate Lamellar Crystals
L. Hu, L. de la Rama, M. Efremov, Y. Anahory, F. Schiettekatte, L. Allen, Journal of the American Chemical Society, 133, 12 (2011).
Fabrication, characterization and modeling of single-crystal thin film calorimeter sensors
Y. Anahory, M. Guihard, D. Smeets, R. Karmouch, F. Schiettekatte, P. Vasseur, P. Desjardins, L. Hu, L.H. Allen, E. Leon-Gutierrez, J. Rodriguez-Viejo, Thermochimica Acta, 510 (2010).
Measurement of heat capacity and enthalpy of formation of nickel silicide using nanocalorimetry
R. K. Kummamuru, L. de la Rama, L. Hu, M. D. Vaudin, M. Y. Efremov, M. L. Green, D. A. LaVan, L. H. Allen, Applied Physics Letters, 95 (2009).
Self-Assembly and Ripening of Polymeric Silver-Alkanethiolate Crystals on Inert Surfaces
L. Hu, Z. S. Zhang, M. Zhang, M. Y. Efremov, E. A. Olson, L. P. de la Rama, R. K. Kummamuru, L. H. Allen, Langmuir, 25, 16 (2009).
A close proximity self-aligned shadow mask for sputter deposition onto a membrane or cavity
R. K. Kummamuru, L. Hu, L. Cook, M. Y. Efremov, E. A. Olson. and L. H. Allen, Journal of Micromechanics and Microengineering, 18 (2008).
In situ transmission electron microscopy studies enabled by microelectromechanical system technology
M. Zhang, E. A. Olson, R. D. Twesten, J. G. Wen, L. H. Allen, I. M. Robertson and I. Petrov, Journal of Materials Research, 20, 7 (2005).
Size-dependent melting of Bi nanoparticles
E. A. Olson, M. Yu. Efremov, M. Zhang, Z. Zhang, and L. H. Allen, Journal of Applied Physics, 97 (2005).
Heat capacity measurements of two-dimensional self-assembled hexadecanethiol monolayers on polycrystalline gold
Z. S. Zhang, O.M. Wilson, M. Y. Efremov, E. A. Olson, M. Zhang, P. V. Braun, W. Senaratne, C. Ober, and L. H. Allen, Applied Physics Letters. 84 (2004).
Probing glass transition of ultrathin polymer films at a time scale of seconds using fast differential scanning calorimetry
M. Y. Efremov, E. A. Olson, M. Zhang, Z. Zhang and L. H. Allen. Macromolecules. 37, 12 (2004).
Thin-film differential scanning nanocalorimetry: heat capacity analysis
M. Yu. Efremov, E. A. Olson, M. Zhang, S. L. Lai, F. Schiettekatte, Z. S. Zhang and L. H. Allen. Thermochimica Acta. 412, 1-2 (2004).
Ultrasensitive, fast, thin-film differential scanning calorimeter
M. Yu. Efremov, E. A. Olson, M. Zhang, F. Schiettekatte, Z. Zhang, and L. H. Allen. Review of Scientific Instruments. 75, 1 (2004).
Nanocalorimetry of Bismuth Nanoparticles
E. A. Olson. Ph.D. Dissertation. University of Illinois at Urbana-Champaign. 2003.
Thermal Properties of Indium Nanoparticles and Gold Silicide Formation by Scanning Nanocalorimetry
M. Zhang. Ph.D. Dissertation. University of Illinois at Urbana-Champaign. 2003.
Glass Transition in Ultrathin Polymer Films: Calorimetric Study
M. Yu. Efremov, E. A. Olson, M. Zhang, Z. Zhang, and L. H. Allen. Physical Review Letters. 91 (2003).
Glass Transition of Thin Films of Poly(2-vinyl pyridine) and Poly(methyl methacrylate): Nanocalorimetry Measurements
M. Yu. Efremov, E. A. Olson, M. Zhang, and L. H. Allen. Thermochimica Acta. 403, 1 (2003).
The Design and Operation of a MEMS Differential Scanning Nanocalorimeter for High-speed Heat Capacity Measurements of Ultrathin Films
E. A. Olson, M. Yu. Efremov, M. Zhang, Z. S. Zhang, and L. H. Allen. Journal of Microelectromechanical Systems. 12, 3 (2003).
Real-time heat capacity measurement during thin-film deposition by scanning nanocalorimetry
M. Zhang, M. Yu. Efremov, E. A. Olson, Z. S. Zhang, and L. H. Allen. Applied Physics Letters. 81, 20 (2002).
Thin-Film Differential Scanning Calorimetry: A New Probe for Assignment of the Glass Transition of Ultrathin Polymer Films
M. Yu. Efremov, J. T. Warren, E. A. Olson, M. Zhang, A. T. Kwan, and L. H. Allen. Macromolecules. 35, 5 (2002).
Nanoscale Calorimetry of Isolated Polyethylene Single Crystals
A.T. Kwan, M. Yu. Efremov, E. A. Olson, F. Schiettekatte, M. Zhang, P. H. Geil, and L. H. Allen. Journal of Polymer Science: Part B. 39, 11 (2001).
Nano-scale Calorimetry of Isolated Polyethylene Single Crystals
A. T. Kwan. M.S. Thesis. University of Illinois at Urbana-Champaign. 2003.
Discrete Periodic Melting Point Observations for Nanostructure Ensembles
M. Yu. Efremov, F. Schiettekatte, M. Zhang, E. A. Olson, A. T. Kwan, R. S. Berry, and L. H. Allen. Physical Review Letters. 85, 17 (2000).
Scanning calorimeter for nanoliter-scale liquid samples
E. A. Olson, M. Yu. Efremov, A. T. Kwan, S. Lai, V. Petrova, F. Schiettekatte, J. T. Warren, M. Zhang, and L. H. Allen. Applied Physics Letters. 77, 17 (2000).
Size-dependent melting point depression of nanostructures: Nanocalorimetric measurements
M. Zhang, M. Yu. Efremov, F. Schiettekatte, E. A. Olson, A. T. Kwan, S. L. Lai, T. Wisleder, J. E. Greene, and L. H. Allen. Physical Review B, 62, 15 (2000).
W deposition and titanium fluoride formation during WF6 reduction by Ti: reduction path and mechanisms
G. Ramanath, J.E. Greene, J. R. A. Carlsson, and L. H. Allen; V. C. Homback and D. J. Allman. Journal of Applied Physics. 85, 3 (1999).
MEMS-based scanning calorimeter for thermodynamic properties of nanostructures
S. Lai and L. H. Allen. Microscale Thermophysical Engineering. 2, 1 (1998).
Melting point depression of Al clusters generated during the early stages of film growth: Nanocalorimetry measurements
S. L. Lai, J. R. A. Carlsson, and L. H. Allen. Applied Physics Letters, 72, 9 (1998).
Origins and evolution of stress development in sol-gel derived thin layers and multideposited coatings of lead titanate
S. S. Sengupta, S. M. Park, D. A. Payne, and L. H. Allen. Journal of Applied Physics. 83, 4 (1998).
Kinetics of thin-film reactions of Cu/a-Ge bilayers
Z. Wang, G. Ramanath, L. H. Allen, and A. Rockett; J. P. Doyle and B. G. Svensson. Journal of Applied Physics. 82, 7 (1997).
Heat Capacity measurements of Sn nanostructures using a thin-film differential scanning calorimeter with 0.2 nJ sensitivity
S. L. Lai, G. Ramanath, L. H. Allen, and P. Infante. Applied Physics Letters. 70, 1 (1997).
Gas-phase transport of WF6 through annular nanopipes in TiN during chemical vapor deposition of W on TiN/Ti/SiO2 structures for integrated circuit fabrication
G. Ramanath, J. R. A. Carlsson, J. E. Greene, L. H. Allen, V. C. Hornback, and D. J. Allman. Applied Physics Letters. 69, 21 (1996).
Size-Dependent Melting Properties of Small Tin Particles: Nanocalorimetric Measurements
S. L. Lai, J. Y. Guo, V. Petrova, G. Ramanath, and L. H. Allen. Physical Review Letters. 77, 1 (1996).
Au-mediated low-temperature solid phase epitaxial growth of a SixGe1-x alloy on Si(001)
G. Ramanath, H. Z. Xiao, S. L. Lai, and L. H. Allen; T. L. Alford. Journal of Applied Physics. 79, 6 (1996).
Thermal stability of α-titanium in contact with titanium nitride
Shi-Qing Wang; Leslie H. Allen. Journal of Applied Physics. 79, 5 (1996).
High-speed (104 oC/s) scanning microcalorimetry with monolayer sensitivity (J/m2)
S. L. Lai, G. Ramanath, and L. H. Allen; P. Infante, Z. Ma. Applied Physics Letters. 67, 9 (1995).
Evolution of microstructure in nanocrystalline Mo-Cu thin films during thermal annealing
G. Ramanath, H. Z. Xiao, L. C. Yang, A. Rockett, and L. H. Allen. Journal of Applied Physics. 78, 4 (1995).
Reaction paths and kinetics of aluminide formation in Al/epitaxial-W(001) model diffusion barrier systems
D. B. Bergstrom, I. Petrov, L. H. Allen, and J. E. Greene. Journal of Applied Physics. 78, 1 (1995).
Microstructural aspects and mechanism of the C49-to-C54 polymorphic transformation in titanium disilicide
Z. Ma and L. H. Allen; D. D. J. Allman. Journal of Applied Physics. 77, 9 (1995).
Defect ordering in epitaxial a-GaN(0001)
H. Z. Xiao, N.-E. Lee, R. C. Powell, Z. Ma, L. J. Chou, L. H. Allen, J. E. Greene, and A. Rockett. Journal of Applied Physics. 76, 12 (1994).
Manipulation of the Ti/Si reaction paths be introducing an amorphous Ge interlayer
Z. Ma, H. Z. Xiao, and L. H. Allen; B. J. Park. Applied Physics Letters. 65, 5 (1994).
Kinetic mechanisms of the C49-to-C54 polymorphic transformation in titanium disilicide thin films: A microstructure-scaled nucleation-mode transition
Z. Ma and L. H. Allen. Physical Review B. 49, 19 (1994).
Low resistance ohmic contacts on wide band-gap GaN
M. E. Lin, Z. Ma, F. Y. Huang, Z. F. Fan, L. H. Allen, and H. Morkoç. Applied Physics Letters. 64, 8 (1994).
Reactive ion etching of GaN using BCL3
M. E. Lin, Z. F. Fan, Z. Ma, L. H. Allen, and H. Morkoç. Applied Physics Letters. 64, 7 (1994).
Solid-state reaction-mediated low-temperature bonding of GaAs and InP wafers to Si substrates
Z. Ma, G. L. Zhou, H. Morkoç, and L. H. Allen. Applied Physics Letters. 64, 6 (1994).
1 000 000 °C/s thin film electrical heater: In situ resistivity measurements of Al and Ti/Si thin films during ultra rapid thermal annealing
L. H. Allen, G. Ramanath, S. L. Lai, Z. Ma, S. Lee, D. D. J. Allman, and K. P. Fuchs. Applied Physics Letters. 64, 4 (1994).
Low temperature structure and phase transitions at the Au/Si (100) interface
Z. Ma and L. H. Allen. Physical Review B. 48, 20 (1993).
Si/SiGe modulation-doped structures with thin buffer layers: Effect of substrate orientation
G. L. Zhou, Z. Ma, M. E. Lin, J. Reed, L. H. Allen, and H. Morkoç. Applied Physics Letters. 63, 15 (1993).
Nucleation and growth in the initial stage of metastable titanium disilicide formation
Z. Ma, Y. Xu, and L. H. Allen; S. Lee. Journal of Applied Physics. 74, 4 (1993).
Low-temperature solid-phase heteroepitaxial growth of Ge-rich SixGe1-x alloys on Si (100) by thermal annealing a-Ge/Au bilayers
Z. Ma, Y. Xu, and L. H. Allen. Applied Physics Letters. 61, 2 (1992).
Solutions to current crowding in circular vias for contace resistance measurements
L. H. Allen, M. Y. Zhang, and J. W. Mayer. Journal of Applied Physics. 70, 1 (1991).
Metal/semiconductor interactions
L. H. Allen, Ph.D. thesis, Cornell University. 1990.
Two-dimensional Si crystal growth during thermal annealing of Au/polycrystalline-Si bilayers
L. H. Allen, J. R. Phillips, D. Theodore, C. B. Carter, R. Soave, and J. W. Mayer; G. Ottaviani. Physical Review B. 41, 12 (1990).
Kinetic study of Si recrystallization in the reaction between Au and polycrystalline-Si films
L. H. Allen and J. W. Mayer; K. N. Tu; L. C. Feldman. Physical Review B. 41, 12 (1990).
Ion Mixing Kinetics Study By In-situ Resistance Measurements in the Au/Si System
J. Li, L. H. Allen, J. W. Mayer, Nucl. Instrum. Meth. B, 36, 2 (1989).
Solid-state amorphization in Al-Pt multilayers by low-temperature annealing
B. Blanpain and L. H. Allen; J.-M. Legresy; J. W. Mayer. Physical Review B. 39, 18 (1989).
Copper electromigration in polycrystalline copper sulfide
L. H. Allen and Ephraim Buhks. Journal of Applied Physics, 56, 2 (1984).