Publications

2026
  1. Prakash, D. J.; Cavallo, F.
    Bent Into Shape: Mechanics and Geometry of Self-Assembled Metal Nanomembranes. Advanced Functional Materials, 2026, e75759. Click Here
  1. Hajitabarmarznaki, S.; Scott, S. A.; Martinez-Argudo, M.; Prakash, D. J.; Lagally, M. G.; van der Weide, D. W.; Cavallo, F.
    Integrated Couplers of THz Radiation for Helical Slow-Wave Structures. ACS Omega, 9(33), 35973–35977.
  2. Renteria, E. J.; Heileman, G. D.; Neely, J. P.; Addamane, S. J.; Rotter, T. J.; Balakrishnan, G.; Christodoulou, C.; Cavallo, F.
    Infrared-Transparent Semiconductor Membranes for Electromagnetic Interference Shielding of Millimeter Waves. Adv. Mater. Technol., 9, 2401013.
  3. Chaudhary, A.; Prakash, D. J.; Jacobson, R. B.; Lagally, M. G.; Cavallo, F.
    Formation and Shape-Changing of Conductive Helical Ribbons via Deposition of Highly Stressed Films on Mechanically Responsive Substrates. Adv. Funct. Mater., 2024, 2312333.
  1. Rodrigues-Junior, G.; Cavallo, F.; Deneke, C.; Malachias, A.
    Strain Tuning in Graded SiGe on Insulator: Interplay between Local Concentration and Nonmonotonic Lattice Evolution after Ge Condensation. J. Phys. Chem. C, 126(50), 21368–21374.
  2. Martinez Argudo, M.; Hajitabarmarznaki, S.; Prakash, D. J.; Dwyer, M. M.; Lagally, M. G.; van der Weide, D. W.; Cavallo, F.
    Amplification of THz Waves by Beam-Wave Interaction in Self-Assembled Helical Slow-Wave Structures with Single and Double Chirality. AIP Advances, 12, 085121.
  3. Prakash, D. J.; Chen, Y.; Debasu, M. L.; Savage, D. E.; Tangpatjaroen, C.; Deneke, C. F.; Malachias, A.; Alfieri, A. D.; Elleuch, O.; Lekhal, K.; Szlufarska, I.; Evans, P. G.; Cavallo, F.
    Reconfiguration-Driven Assembly of Amorphous-Complex-Oxide/Semiconductor Nanomembranes. Small, 18, 2105424.
  1. Prakash, D. J.; Dwyer, M. M.; Argudo, M. M.; Debasu, M. L.; Dibaji, H.; Lagally, M. G.; van der Weide, D. W.; Cavallo, F.
    Self-Winding Helices as Slow-Wave Structures for Sub-Millimeter Traveling-Wave Tubes. ACS Nano, 15(1), 1229–1239.
  1. Abdul, N.; Rush, M. N.; Nohava, J.; Amezcua, U.; Shreve, A. P.; Cavallo, F.
    Single-Cell Response to the Rigidity of Semiconductor Nanomembranes on Compliant Substrates. ACS Appl. Mater. Interfaces, 12(9), 10697–10705.
  1. Lipinska, K.; Emmert, L. A.; Cavallo, F.; Diels, J. C.
    Ultrafast Laser-Generated Structural Modifications in an Er-Doped Heavy Metal Oxide Glass. Opt. Mater. Express, 9(5), 2098–2106.
  2. Lipinska, K.; Cavallo, F.; Ayitou, A. J. L.; Segre, C. U.
    Quench-Free Enhanced Emission in Cluster-Free Er-Doped Heavy Metal Oxide Glasses. Opt. Mater. Express, 9(3), 1072–1084.
  1. Mangu, V. S.; Renteria, E. J.; Addamane, S. J.; Mansoori, A.; Armendariz, A.; Deneke, C. F.; Ferreira, S. O.; Zamiri, M.; Balakrishnan, G.; Cavallo, F.
    Pixelated GaSb Solar Cells on Silicon by Membrane Bonding. Appl. Phys. Lett., 113, 132502.
  2. Peng, W.; Zamiri, M.; Scott, S. A.; Cavallo, F.; Endres, J. J.; Knezevic, I.; Eriksson, M. A.; Lagally, M. G.
    Electronic Transport in Hydrogen-Terminated Si (001) Nanomembranes. Phys. Rev. Appl., 9(2), 024037.
  1. Zamiri, M.; Anwar, F.; Klein, B. A.; Rasoulof, A.; Dawson, N. M.; Schuler-Sandy, T.; Deneke, C. F.; Ferreira, S. O.; Cavallo, F.; Krishna, S., PNAS Plus Significance Statements. Proc. Natl. Acad. Sci., 2017, 114 (1), 17–18.
  2. Zamiri, M.; Anwar, F.; Klein, B. A.; Rasoulof, A.; Dawson, N. M.; Schuler-Sandy, T.; Deneke, C. F.; Ferreira, S. O.; Cavallo, F.; Krishna, S., Antimonide-based Membranes: Synthesis Integration and Strain Engineering. Proc. Natl. Acad. Sci., 2017, 114 (1), E1–E8.
  3. Rojas-Delgado, R.; Jacobberger, R. M.; Roy, S. S.; Mangu, V. S.; Arnold, M. S.; Cavallo, F.; Lagally, M. G., Passivation of Germanium by Graphene. ACS Appl. Mater. Interfaces, 2017, 9 (20), 17629–17636.
  4. Mangu, V. S.; Zamiri, M.; Brueck, S. R. J.; Cavallo, F., Strain Engineering, Efficient Excitonic Photoluminescence, and Exciton Funnelling in Unmodified MoS₂ Nanosheets. Nanoscale, 2017, 9 (43), 16602–16606.
  5. Anwar, F.; Carlos, C. R.; Saraswat, V.; Mangu, V. S.; Arnold, M. S.; Cavallo, F., Nanoscale Graphene/Ge Wigglers as Building Blocks for THz Sources. AIP Advances, 2017, 7 (11), 115015.
  1. Zamiri, M.; Klein, B. A.; Schuler-Sandy, T.; Myers, S.; Dahiya, V.; Cavallo, F.; Krishna, S., Indium-bump-free Antimonide Superlattice Membrane Detectors on Silicon Substrates. Appl. Phys. Lett., 2016, 108 (9), 091110.
  1. Marçal, L.; Richard, M.-I.; Magalhaes-Paniago, R.; Cavallo, F.; Lagally, M. G.; Schmidt, O. G.; Schülli, T.; Deneke, C. F.; Malachias, A., Direct Evidence of Strain Transfer for InAs Island Growth on Compliant Si Substrates. Appl. Phys. Lett., 2015, 106 (15), 151905.
  2. Cavallo, F.; Lagally, M. G., Nano-origami: Art and Function. Nano Today, 2015, 10 (5), 538–541.
  3. Cavallo, F., Compliant Semiconductor Scaffolds: Building Blocks for Advanced Neural Interfaces. Neural Reg. Res., 2015, 10 (11), 1741–1742.
  1. Cavallo, F.; Turner, K. T.; Lagally, M. G., Facile Fabrication of Ordered Crystalline‐Semiconductor Microstructures on Compliant Substrates. Adv. Funct. Mater., 2014, 24 (12), 1730–1737.
  2. Cavallo, F.; Rojas-Delgado, R.; Kelly, M. M.; Sánchez Pérez, J. R.; Schroeder, D. P.; Xing, H. G.; Eriksson, M. A.; Lagally, M. G., Exceptional Charge Transport Properties of Graphene on Germanium. ACS Nano, 2014, 8 (10), 10237–10245.
  3. Cavallo, F.; Huang, Y.; Dent, E. W.; Williams, J. C.; Lagally, M. G., Neurite Guidance and Three-Dimensional Confinement via Compliant Semiconductor Scaffolds. ACS Nano, 2014, 8 (12), 12219–12227.
  4. Boztug, C.; Sánchez-Pérez, J. R.; Cavallo, F.; Lagally, M. G.; Paiella, R., Strained-Germanium Nanostructures for Infrared Photonics. ACS Nano, 2014, 8 (4), 3136–3151.
  1. Deneke, C. F.; Malachias, A.; Rastelli, A.; Merces, L.; Huang, M.; Cavallo, F.; Schmidt, O. G.; Lagally, M. G., Straining Nanomembranes via Highly Mismatched Heteroepitaxial Growth: InAs Islands on Compliant Si Substrates. ACS Nano, 2012, 6 (11), 10287–10295.
  1. Huang, M.; Cavallo, F.; Liu, F.; Lagally, M. G., Nanomechanical Architecture of Semiconductor Nanomembranes. Nanoscale, 2011, 3 (1), 96–120.
  2. Cavallo, F.; Grierson, D. S.; Turner, K. T.; Lagally, M. G., “Soft Si”: Effective Stiffness of Supported Crystalline Nanomembranes. ACS Nano, 2011, 5 (7), 5400–5407.
  1. Cavallo, F.; Lagally, M. G., Semiconductors Turn Soft: Inorganic Nanomembranes. Soft Matter, 2010, 6 (3), 439–455.
  1. Huang, G.; Mei, Y.; Cavallo, F.; Baunack, S.; Coric, E.; Gemming, T.; Bertram, F.; Christen, J.; Fu, R.; Chu, P. K.; Schmidt, O. G., Fabrication and Optical Properties of C/β-SiC/Si Hybrid Rolled-up Microtubes. J. Appl. Phys., 2009, 105, 016103.
  1. Stoffel, M.; Malachias, A.; Merdzhanova, T.; Cavallo, F.; Isella, G.; Chrastina, D.; Von Känel, H.; Rastelli, A.; Schmidt, O. G., SiGe Wet Chemical Etchants with High Compositional Selectivity and Low Strain Sensitivity. Semicon. Sci. Tech., 2008, 23 (8), 085021.
  2. Cavallo, F.; Songmuang, R.; Schmidt, O. G., Fabrication and Electrical Characterization of Si-Based Rolled-up Microtubes. Appl. Phys. Lett., 2008, 93 (14), 143113.
  3. Cavallo, F.; Sigle, W.; Schmidt, O. G., Controlled Fabrication of Cr∕Si and Cr∕SiGe Tubes Tethered to Insulator Substrates. J. Appl. Phys., 2008, 103, 116103.
  1. Mei, Y.; Thurmer, D. J.; Cavallo, F.; Kiravittaya, S.; Schmidt, O. G., Semiconductor Sub‐Micro‐/ Nanochannel Networks by Deterministic Layer Wrinkling. Adv. Mater., 2007, 19 (16), 2124–2128.
  2. Mei, Y.; Kiravittaya, S.; Benyoucef, M.; Thurmer, D. J.; Zander, T.; Deneke, C. F.; Cavallo, F.; Rastelli, A.; Schmidt, O. G., Optical Properties of a Wrinkled Nanomembrane with Embedded Quantum Well. Nano Lett., 2007, 7 (6), 1676–1679.
  3. Cavallo, F.; Songmuang, R.; Ulrich, C.; Schmidt, O. G., Rolling up SiGe on Insulator. Appl. Phys. Lett., 2007, 90 (19), 193120.
  1. Rastelli, A.; Ulhaq, A.; Deneke, C.; Wang, L.; Benyoucef, M.; Coric, E.; Winter, W.; Mendach, S.; Horton, F.; Cavallo, F.; Schmidt, O. G., Fabrication and Characterization of Microdisk Resonators with In(Ga)As/GaAs Quantum Dots. Phys. Stat. Sol. C, 2006, 3 (11), 3641–3645.
2021
  1. Prakash, D. J.; Hajitabarmarznaki, S.; Martinez Argudo, M.; Dwyer, M. M.; Lagally, M. G.; van der Weide, D. W.; Cavallo, F.
    Self-Assembled Helical Slow-Wave Structures with Single and Double Chirality for THz Beam-Wave Interaction.
    IEEE MTT-S International Microwave Symposium (IMS), 2021.
  2. Prakash, D. J.; Dwyer, M. M.; Martinez Argudo, M.; Debasu, M. L.; Dibaji, H.; Lagally, M. G.; van der Weide, D. W.; Cavallo, F.
    Self-Winding Helices as Slow-Wave Structures for Millimeter and Sub-Millimeter Traveling-Wave Tubes.
    IEEE International Vacuum Electronics Conference (IVEC), 2021.
Issued Patents

  1. Cavallo, F., Dwyer, M. M., Bhat, A., Lagally, M. G., & van der Weide, D. W. (2024, September 17). Method of making self-assembled slow-wave structures (U.S. Patent No. 12,091,746 B2).

  2. Cavallo, F., Dwyer, M. M., Bhat, A., Lagally, M. G., & van der Weide, D. W. (2023, February 21). Electroplated helical slow-wave structures for high-frequency signals (U.S. Patent No. 11,588,456).

  3. Cavallo, F., Lagally, M. G., Dwyer, M. M., van der Weide, D. W., & Bhat, A. (2021, December 14). Traveling wave tube amplifier having a helical slow-wave structure supported by a cylindrical scaffold (U.S. Patent No. 11,201,028 B2).

  4. Lagally, M. G., Mangu, V. S., & Cavallo, F. (2021, February 23). Arrays of high-aspect-ratio germanium nanostructures with nanoscale pitch and methods for the fabrication thereof (U.S. Patent No. 10,930,490 B1).

  5. van der Weide, D. W., Lagally, M. G., & Cavallo, F. (2021, January 26). High-frequency vacuum electronic device (U.S. Patent No. 10,903,035).

  6. Cavallo, F., & Mangu, V. S. (2020, June 9). Radially stacked solar cells based on 2D atomic crystals and methods for their production (U.S. Patent No. 10,680,129).

  7. Cavallo, F., & Mangu, V. S. (2018, November 27). Radially stacked solar cells based on 2D atomic crystals and methods for their production (U.S. Patent No. 10,141,469 B2).

  8. Cavallo, F., Rojas-Delgado, R., & Lagally, M. G. (2016, April 26). Graphene-on-semiconductor substrates for analog electronics (U.S. Patent No. 9,324,804).

  9. Cavallo, F., Rojas-Delgado, R., & Lagally, M. G. (2015, June 16). Anisotropic conducting films for electromagnetic radiation applications (U.S. Patent No. 9,059,335 B2).

  10. Mei, Y., Thurmer, D. J., Cavallo, F., & Schmidt, O. G. (2009, October 6). Method for fabricating micrometer or nanometer channels (U.S. Patent No. 7,598,109 B2).

  1. Cavallo, F., Renteria, E. J., Christodoulou, C., Jayaweera, S., & Balakrishnan, G. (2025, March 20). Reconfigurable nanomembrane smart antennas (U.S. Patent Application No. 19/085,336).

  2. Cavallo, F. (2025, March 14). Nanoscale helical ribbons as cyclotron THz sources (U.S. Patent Application No. 19/080,236).

  3. Cavallo, F., & Prakash, D. J. (2024, April 8). Method for reconfiguration of helical slow-wave structures for high-frequency vacuum electronic devices (U.S. Patent Application No. 63/575,948).

  4. Cavallo, F., & Prakash, D. J. (2024, April 19). Scalable self-assembly technique for strain-engineering of amorphous complex oxides and fabrication of hybrid superlattices (U.S. Patent Application No. 18/641,282).

  5. Cavallo, F. (2024, April 24). Integrated platform for on-chip spatial analog optical computing (U.S. Patent Application No. 63/638,166).

  6. Cavallo, F. (2024, May 28). Solid-state traveling-wave amplifiers for millimeter-through-THz frequencies (U.S. Patent Application No. 63/652,459).

  7. Cavallo, F. (2024, May 28). Solid-state electrons-THz waves interaction structures for broadband amplifiers (U.S. Patent Application No. 63/652,468).

  8. Cavallo, F., Sharoar, A. K. M. C., & Prakash, D. J. (2024, May 7). Refractory metal helices and methods for their fabrication (U.S. Patent Application No. 63/643,562).

  9. Cavallo, F., Chaudary, A., Prakash, D. J., & Lagally, M. G. (2024, November 14). Directed self-assembly of helices via electrodeposition on end-tethered nanomembrane ribbons for millimeter-wave traveling-wave tube amplifiers (U.S. Patent Application No. 18/865,722).

  10. Cavallo, F., Prakash, D. J., Hajitabarnarznaki, S., Scott, S. A., Lagally, M. G., & van der Weide, D. W. (2023, November 13). Helical slow-wave structures with integrated couplers of THz radiation: Devices and methods of fabrication (U.S. Patent Application No. 18/508,172).

  11. Cavallo, F., & Renteria, E. J. (2023, July 31). Ultra-thin materials for electromagnetic interference shielding and detection of infrared and visible radiation (U.S. Patent Application No. 18/362,865).

  12. Cavallo, F., Haines, F., Renteria, E. J., Debasu, M., & Lagally, M. G. (2022, June 9). Semiconductor spintronic devices and methods for their production (U.S. Patent Application No. 17/836,705). [Allowed]