PUBLICATIONS
Journal Publications:
[J18] L. A. Rincon Baron, M. P. Forero Carvajal, L. G. Ramírez Alemán, A. K. Carrascal-Camacho, A. E. Mejía-Gómez, C. Velez, J. C. Salcedo-Reyes, A. M. Pedroza-Rodriguez, “Development of TiO2 films by sol-gel/sedimentation for inactivation of multiresistant Escherichia coli and Salmonella Typhimurium”. Journal of Sol-Gel Science and Technology. 2024 (Under review).
[J17] G. Álvarez-Botero, H. Lobato-Morales, K. Hui, N. Tarabay, J. Sanchez-Vargas, C. Velez, G. Méndez-Jerónimo, “Magneto-Dielectric Composites Characterization Using Resonant Sensor and Neural Network Modeling”, IEEE Microwave and Wireless Technology Letters, 2024
[J16] C. Velez, D. K. Patel, S. Kim, M. Babaei, C. R. Knick, G. L. Smith, and S. Bergbreiter, “Hierarchical Integration of Thin-Film NiTi Actuators using Additive Manufacturing for Microrobotics,” Journal of Microelectromechanical Systems 29 (5), 867-873, 2020.
[J15] M. Babaei, S. Kim, C. Velez, D. K. Patel, and S. Bergbreiter, “Increasing the Energy Efficiency of NiTi Unimorph Actuators with a 3D-Printed Passive Layer,” Journal of Microelectromechanical Systems 29 (5), 797-803, 2020.
[J14] O. L. Lanier, C. Velez, D. P. Arnold, and J. Dobson, “Model of Magnetic Particle Capture Under Physiological Flow Rates for Cytokine Removal During Cardiopulmonary Bypass,” IEEE Trans. Biomed. Eng., vol. 68, no. 4, pp. 1198-1207, 2020.
[J13] S. Kim, C. Velez, R. St. Pierre, G. L. Smith, and S. Bergbreiter, “A Two-Step Fabrication Method for 3D Printed Microactuators: Characterization and Actuated Mechanisms,” Journal of Microelectromechanical Systems. Volume: 29, Issue: 4, pp. 544 – 552, Aug. 2020.
[J12] C. Velez, S. Hwangbo, S. Chyczewski, J. Ewing, R. Bowrothu, C. Smith, Y.K. Yoon, and D. P. Arnold, “Screen-printed barium ferrite/samarium cobalt composites with tailorable ferromagnetic resonance,” IEEE Transactions on Microwave Theory and Techniques, special issue. Volume: 67, Issue: 8, Aug. 2019.
[J11] A. P. Taylor, C. Velez, D. P. Arnold, and L. F. Velásquez–García, “Fully 3D-printed, monolithic mini magnetic actuators for low-cost, compact systems,” J-MEMS, Volume: 28 , Issue: 3 , June 2019.
[J10] C. Velez, R. E. Carroll, and D. P. Arnold, “Direct measurement and microscale mapping of nanoNewton to milliNewton magnetic forces,” AIP Adv., vol. 7, no. 5, pp. 56809-1-56809–6, May 2017.
[J9] Z. Zhao, I. Torres-Díaz, C. Vélez, D. Arnold, and C. Rinaldi, “Brownian Dynamics Simulations of Magnetic Nanoparticles Captured in Strong Magnetic Field Gradients,” J. Phys. Chem. C, vol. 121, no. 1, pp. 801–810, 2017.
[J8] A. Garraud, C. Velez, Y. Shah, N. Garraud, B. Kozissnik, E. G. Yarmola, K. D. Allen, J. Dobson, and D. P. Arnold, “Investigation of the capture of magnetic particles from high-viscosity fluids using permanent magnets,” IEEE Trans. Biomed. Eng., vol. 63, no. 2, pp. 372–378, 2016.
[J7] C. Velez, I. Torres-Díaz, L. Maldonado-Camargo, C. Rinaldi, and D. P. Arnold, “Magnetic Assembly and Cross-Linking of Nanoparticles for Releasable Magnetic Microstructures.,” ACS Nano, vol. 9, no. 10, pp. 10165–72, Oct. 2015.
[J6] S. Li, Y. Hwang, Y. Hsieh, L. Lei, F. Ren, S. J. Pearton, E. Patrick, M. E. Law, C. V. Cuervo, and D. J. Smith, “Enhancement of AlGaN / GaN high electron mobility transistors off-state drain breakdown voltage via backside proton irradiation,” J. Vac. Sci. Technol. B, vol. 32, no. 2, pp. 1–6, 2014.
[J5] G. Yang, Y. Jung, C. V. Cuervo, F. Ren, S. J. Pearton, and J. Kim, “GaN-based light-emitting diodes on graphene-coated flexible substrates,” Opt. Express, vol. 22, no. S3, p. A812, Apr. 2014.
[J4] L. Liu, C. Velez Cuervo, Y. Xi, F. Ren, S. J. Pearton, H.-Y. Kim, J. Kim, and I. I. Kravchenko, “Impact of proton irradiation on dc performance of AlGaN/GaN high electron mobility transistors,” J. Vac. Sci. Technol. B Microelectron. Nanom. Struct., vol. 31, no. 4, p. 42202, 2013.
[J3] E. Patrick, M. E. Law, L. Liu, C. Velez Cuervo, Y. Xi, F. Ren, and S. J. Pearton, “Modeling proton irradiation in AlGaN/GaN HEMTs: Understanding the increase of critical voltage,” IEEE Trans. Nucl. Sci., vol. 60, no. 6, pp. 4103–4108, 2013.
[J2] Y.-H. Hwang, L. Liu, C. Velez, F. Ren, B. P. Gila, D. Hays, S. J. Pearton, E. Lambers, I. I. Kravchenko, C.-F. Lo, and J. W. Johnson, “GaN metal–insulator–semiconductor high-electron-mobility transistor with plasma enhanced atomic layer deposited AlN as gate dielectric and passivation,” J. Vac. Sci. Technol. B Microelectron. Nanom. Struct., vol. 31, no. 5, p. 52201, 2013.
[J1] X. Wang, C.-F. Lo, L. Liu, C. V. Cuervo, R. Fan, S. J. Pearton, B. Gila, M. R. Johnson, L. Zhou, D. J. Smith, J. Kim, O. Laboutin, Y. Cao, and J. W. Johnson, “193 nm excimer laser lift-off for AlGaN/GaN high electron mobility transistors,” J. Vac. Sci. Technol. B Microelectron. Nanom. Struct., vol. 30, no. 5, p. 51209, 2012.
Archival, Peer-Reviewed Conference Publications:
[AC12] E. Mendez-Flores, T. Kallmann, J. Garcia, B. Mena, N. Tarabay, and C. Velez, “Autonomous Aquatic Laser-Following Robot Through RGB Sensors and Optimized Artificial Neural Networks,” 2023 8th International Conference on Automation, Control and Robotics Engineering (CACRE 2023), Hong Kong, China, July 13 to 15, 2023.
[AC11] S. Kim, C. Velez, D. K. Patel, and S. Bergbreiter, “A Magnetically Transduced Whisker for Angular Displacement and Moment Sensing,” 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Macau, November 4-8, pp. 665-671, 2019.
[AC10] C. Velez, J. Ewing, S. Hwangbo, K. Sondhi, T. Schumann, Y.K. Yoon, and D. P. Arnold, “Low-temperature micropatterning of thick-film BaFe12O19 composites on semiconductor substrates for integrated millimeter wave devices,” 2018 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), Ann Arbor, MI, 2018, pp. 1-3.
[AC9] N. Scaife, C. Peeters, C. Velez, H. Zhao, P. Traynor and D. Arnold, "The Cards Aren't Alright: Detecting Counterfeit Gift Cards Using Encoding Jitter," 2018 IEEE Symposium on Security and Privacy (SP), San Francisco, CA, US., pp. 695-708.
[AC8] C. Velez, L. P. Tatum, B. Herstein, C. P. Becker and D. P. Arnold, “Batch-fabrication and characterization of miniaturized axisymmetric electropermanent magnets,” in 17th international conference on micro and nanotechnology for power generation and energy conversion applications (PowerMEMS), 2017, pp. 206-210.
[AC7] C. Velez and D. P. Arnold, “Microfabrication of Magnetically Attached End Effectors for Micro / Milli Robots,” in International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS), 2017, pp. 17-19.
[AC6] C. Velez, D. P. Arnold, Z. I. Gonzalez, and J. F. Osma, “Sub-millimeter Electropermanent Magnets for Microgrippers,” in International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS), 2017, pp. 20-22.
[AC5] A. Hsu, C. Cowan, W. Chu, B. Mccoy, A. Wong-foy, R. Pelrine, C. Velez, D. Arnold, J. Lake, J. Ballard, J. Randall, and A. D. L. Micro-robots, “Automated 2D Micro-Assembly Using Diamagnetically Levitated Milli-Robots,” in International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS), 2017, pp.160-165. BEST APPLICATION PAPER AWARD.
[AC4] C. Velez, I. Torres-Díaz, L. Maldonado-Camargo, C. Rinaldi, and D. P. Arnold, “Fabrication of patterned magnetic microstructures using magnetically assembled nanoparticles,” in The 28th IEEE International Conference on Micro Electro Mechanical Systems, 2015, pp. 964–967.
[AC3] C. Velez, W. C. Patterson, and D. P. Arnold, “Simulation and experimental validation of a selective magnetization process for batch-patterning magnetic layers,” in Journal of Physics: Conference Series, 2015, vol. 660, pp. 3–7.
[AC2] A. Garraud, B. Kozissnik, C. Velez, E. G. Yarmola, L. Maldonado-Camargo, C. Rinaldi, K. D. Allen, J. Dobson, and D. P. Arnold, “Collection of magnetic particles from synovial fluid using Nd-Fe-B micromagnets,” in Proc. Design, Test, Integration and Packaging of MEMS/MOEMS Symposium (DTIP 2014), 2014, pp. 97–102.
[AC1] C. Velez, L. F. Ariza, J. F. Osma, and A. Avila, “Velocity and pressure analysis for microchannel networks,” in 2010 IEEE Andescon, 2010, pp. 1–5.
Other Conference Abstracts/Presentations/Poster:
[OC31] N. Tarabay, A. Renuka-Balakrishna, T. Liu, P. Agarwal, and C. Velez, “Flexible electromagnetic actuators for wearable haptic devices,” Solid-State Sensors, Actuators and Microsystems Workshop. Hilton Head, 2024 (poster-accepted).
[OC30] N. Tarabay, J. Lopez-Medina, and C. Velez, “Additive Manufacturing of Flexible Magnetic Nanocomposites Using Digital Light Processing,” Symposium of Nanoscience and Nanomaterials. Ensenada-Mexico, 2024 (oral-under review).
[OC29] G. Liu, Z. Yao, H. Guo, and C. Velez, “Enhancing IGZO Thin Film Transistors: A Dual Treatment Approach” 65th Electron Materials Conference - EMC, Columbus -Ohio, USA. 2023 (oral – Under review).
[OC28] C. Velez, “Advance manufacturing of sub-mm magnetic nanocomposites,” TMS, 2024 (Oral).
[OC27] N. Tarabay, J. Lopez Medina, and C. Velez, “3D Printing of Flexible Magnetic Composites Using Digital Light Processing,” Magnetism and Magnetic Materials Conference, 2023 (Oral).
[OC26] C. Velez, “Robot-plankton: a swarm of microscale aquatic robots,” 2023 FRR & NRI Principal Investigators' Meeting, 2023 (poster).
[OC25] G. Liu and C. Velez, “Improved Electrical Performance of IGZO Thin Film Transistors with UV Ozone Treatment” 65th Electron Materials Conference - EMC, Santa Barbara, USA. 2023 (oral).
[OC24] L. A. Rincón, G. Liu, C. Vélez, J. C. Salcedo, A. E. Mejía, and A. M. Pedroza, “TiO2 thin film comparison between Atomic Layer Deposition (ALD) and Sol-Gel process” 65th Electron Materials Conference - EMC, Santa Barbara, USA. 2023 (oral).
[OC23] E. Mendez-Flores, C. Velez, “World’s Smallest Autonomous Aquatic Robot,” Southern California Robotics Symposium. Irvine, 2023 (oral).
[OC22] C. Velez, “Micrororobots for Detection of Emerging Contaminants,” Southern California Robotics Symposium. Los Angeles, 2022 (oral).
[OC21] O. Garcia-Barron, V. Saechao, J. T. III Gilbert, M. Sutherland, C. C. Loyola, C. Velez, “RoboFish: Autonomous Underwater Vehicle,” Southern California Robotics Symposium. Los Angeles, 2022 (poster).
[OC20] E. Main-Loam Leong, C. Velez, “Magnetohydrodynamic propulsion for microrobots,” Solid-State Sensors, Actuators and Microsystems Workshop. Hilton Head, 2022 (poster).
[OC19] D. K. Patel, C. Velez, S. Fortune, and S. Bergbreiter, “Multimaterial and flexible 3d printed magnets with sub-millimeter resolution,” Magnetism and Magnetic Materials Conference, 2020 (Oral).
[OC18] C. Velez, D. K. Patel, S. Kim, M. Babaei, C. Knick, G. Smith, and S. Bergbreiter, “Combining micro fabrication and additive manufacturing for microrobotic mechanisms,” Hilton Head Workshop 2020: A Solid-State Sensors, Actuators and Microsystems Workshop, 2020 (Accepted – Oral / cancelled for COVID-19).
[OC17] M. Babaei, S. Kim, C. Velez, D. K. Patel, and S. Bergbreiter, “Increasing the Work Efficiency of NiTi Unimorph Actuators,” Hilton Head Workshop 2020: A Solid-State Sensors, Actuators and Microsystems Workshop, 2020 (Accepted - Poster / cancelled for COVID-19).
[OC16] C. Velez, S. Kim, M. Babaei, D. K. Patel, C. Knick, G. Smith, and S. Bergbreiter, “Rapid prototyping of microactuators by integrating 3D printed polymeric structures with NiTi thin film,” 33rd International Conference on Micro Electro Mechanical Systems, IEEE MEMS. Vancouver-Canada, 2020.
[OC15] C. Velez, R. E. Pelrine, and D. P. Arnold, “Batch-fabrication of diamagnetically levitated microrobots,” in Solid-State Sensors, Actuators and Microsystems Workshop, pp. 66-66 2018 (Oral).
[OC14] A. Alfred, C. Falck, L. F. De Pina, D. Girard, D. Tansel, D. Tola, A. Weber, J. Williams, C. Velez, G. Walters, Y. Yoon, and T. Nishida, “Smart Lake- A Modular Internet-connected Water Quality Monitoring System,” in PRAGMA 32: Internet of people and things, 2017, BEST POSTER AWARD.
[OC13] C. Velez, C. Becker, and D. P. Arnold, “Investigation of axisymmetric sub-millimeter electropermanent magnets,” in PowerMEMS, 2016, p. 32611.
[OC12] C. Velez and D. P. Arnold, “Batch-fabrication of magnetically patterned bases for diamagnetically levitated micro-robots,” in International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS), 2016.
[OC11] O. L. Lanier, C. Velez, and J. Dobson, “Simulation of magnetic particle capture for extracorporeal magnetic separation of inflammatory cytokines for cardiopulmonary bypass (CPB) procedures,” in Biomedical Engineering Society annual conference, 2016.
[OC10] O. L. Lanier, C. Velez, and J. Dobson, “Magnetic nanoparticle capture simulation for extracorporeal separation of cytokines in blood,” in NanoFlorida, 2016.
[OC9] A. Garraud, C. Velez, Y. Shah, N. Garraud, B. Kozissnik, E. G. Yarmola, K. D. Allen, J. P. Dobson, and D. P. Arnold, “Analysis of Microscale Permanent Magnets for Capturing Magnetic Particles in Biological Fluids,” in Frontiers in BioMagnetic Particles, 2015. BEST POSTER AWARD
[OC8] C. Vélez, D. Cruz, J. C. Gonzalez, S. C. Medina, O. F. Sanchez, A. Avila, and J. F. Osma, “Size microcapsule separation using microfluidic systems,” in Ibersensor, 2014, p. 331.
[OC7] C. Velez, I. Torres-díaz, L. Maldonado-camargo, C. Rinaldi, and D. P. Arnold, “Fabrication of magnetic microstructures by in situ crosslinking of magnetically assembled nanoparticles,” in Solid-State Sensors, Actuators and Microsystems Workshop, 2014, no. c, pp. 331–334.
[OC6] K. A. Y. Shah, C. C. Velez, E. Yarmola, D. Arnold, J. Dobson, “Designing a probe for the magnetic collection of molecular biomarkers in joints for early detection of osteoarthritis,” in Biomedical Engineering Society Annual Meeting, 2014.
[OC5] C. Velez, L. Liu, F. Ren, S. J. Pearton, J. Kim, R. C. Fitch, D. E. Jr. Walker, K. D. Chabak, J. K. Gillespie, M. Kossler, M. Trejo, and A. Crespo, “Effects of Proton Irradiation on Reliability and DC Performances Of AlGaN/GaN High Electron Mobility Transistors,” in Florida Chapter of the AVS Science and Technology Society (FLAVS) 2013 Annual Joint Symposium & Exhibition, 2013.
[OC4] C. Velez, S. Silva, X. Wang, A. G. Mancera, C. Leidy, J. F. Osma, and F. Ren, “Comparison Techniques For Fabricating Microfluidic Four-Roll Mill On Glass Substrates,” in AVS 59th International Symposium & Exhibition, 2012.
[OC3] C. V. Cuervo, M. D. L. Teixeira, and D. Li, “Microneedle Based ECG – Glucose Sensor Design Proposal,” in NanoFlorida, 2010, p. 73644.
[OC2] J. M. Garz, J. Sebastian, M. Baquero, J. C. Ortiz, C. Velez, and J. F. Osma, “Manufacture of Aluminium Micromirrors on Glass,” in Third Colombian Meeting on Micro and Nano Technology, 2010, vol. 4, no. 1, p. 70403.
[OC1] D. M. Camacho, C. Vélez, G. Yamhure, C. M. C, and J. A. Garcia, “Recomendaciones Para La Implementación Del Layout De Circuitos Monolíticos de Señal,” in IEEE Colombian Workshop on Circuits and Systems (CWCAS07), 2007, pp. 1–6.
Thesis/capstone projects:
[T8] Camila Fernandez. “Digital Electronic Circuit for an Autonomous Swimming Microrobot”. University of California, Irvine. B.Sc. Capstone project. 2023. (Advisor – Honors Thesis).
[T7] A. L. Mitchell. “Position and Orientation Detection of Magnetic Objects Using Optimization Techniques”. University of California, Irvine. M.Sc. Thesis. 2023.
[T6] D. I. Martínez-García, F. J. Valbuena-Ortega. “Sistema electromagnético de movimiento para micro robots en presencia de un campo magnético externo”. Pontificia Universidad Javeriana. Bogotá-Colombian. B.Sc. Capstone project. 2022. (Customer).
[T5] D. A. Cristancho-Pérez, D. S. Rincón-Poveda. “Diseño de circuito en VLSI para el control de un actuador para locomoción en microrobots y MEMS”. Pontificia Universidad Javeriana. Bogotá-Colombian. B.Sc. Capstone project. TG-2040. 2021. (Co-advisor).
[T4] F. elBaghdadi. “Small scale robot for autonomous tracking of magnetic field sources”. Universitat politécnica de Catalunya - ETSEIB, Barcelona, Spain. M.Sc. Thesis. 2021.
[T3] C. Velez. “Engineering microscale magnetic devices for next-generation microrobotics”. University of Florida. Ph.D. Thesis. 2017.
[T2] C. Velez. “Design and fabrication of a microfluidic system for size particle separation”. Universidad de los Andes. Bogotá-Colombia. M.Eng. Thesis. 2011.
[T1] C. Velez., D.A. Camacho. ““Design Methodology and Implementation of a Monolithic Frequency Synthesizer Circuit in a 0.25 μm CMOS Fabrication Process”, Pontificia Universidad Javeriana. Bogotá-Colombian. B.Sc. Capstone project. 2007.
Patents and Inventions:
[P3] P. G. Traynor, D. P. Arnold, W. N. Scaife, C. Peeters, C. Velez, “Detecting Counterfeit Magnetic Stripe Cards Using Encoding Jitter,” U.S. Patent Application US20180314862A1, filed May 1, 2017.
[P2] D. P. Arnold, C. Velez, “Axisymmetric Electropermanent Magnets,” International Patent Application WO2018106935A2, filed December 7, 2017.
[P1] D. P. Arnold, C. Velez, J Henriksson “Magnetic Force Mapping System,” Invention disclosure UF#16589, June 1, 2016.
White papers:
[WP1] Semi, American Semiconductor Academy, “Fueling American innovation & growth: A national network for microelectronics education and workforce development,” A vision paper, Version 1, August 2022. https://www.semi.org/sites/semi.org/files/2022-08/SEMI_ASA_Vision_Paper_Version1.pdf
Press Coverage:
[5] C. Velez, “CARRERA INGENIERÍA ELECTRÓNICA- Testimonio Camilo Vélez,” Youtube, https://www.youtube.com/watch?v=PBFKAq_SO_g&t=1s , August 3, 2018.
[4] C. Velez, “Young Professionals: Are you a young professional?” Electron Devices Society Newsletter, vol. 25, no. 2, pp. 28, 2018.
[3] C. Velez, “Microrobots and science fiction” Laud 90.4 FM stereo, Bogotá-Colombia September 17, 2017.
[2] C. Velez, “Engine machine – Micro-nano robots” UFM stereo, Armenia-Colombia September 1, 2017.
[1] C. Velez, “Young Professionals: Reflections from EDS Young Professionals,” Electron Devices Society Newsletter, vol. 23, no. 4, pp. 24–25, 2016.
