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16 results (View BibTeX file of all listed publications)

2008

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ENHANCED ADHESION OF PDMS SURFACES FUNCTIONALIZED BY POLY (n-BUTYL ACRYLATE) BRUSHES INSPIRED BY GECKO FOOT HAIRS

Nese, A., Lee, H., Dong, H., Aksak, B., Cusick, B., Kowalewski, T., Matyjaszewski, K., Sitti, M.

Polymer Preprints, 49(2):107, 2008 (article)

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[BibTex]

2008

pi Nese, A., Lee, H., Dong, H., Aksak, B., Cusick, B., Kowalewski, T., Matyjaszewski, K., Sitti, M. ENHANCED ADHESION OF PDMS SURFACES FUNCTIONALIZED BY POLY (n-BUTYL ACRYLATE) BRUSHES INSPIRED BY GECKO FOOT HAIRS Polymer Preprints, 49(2):107, 2008 (article)

[BibTex]

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Design and development of the lifting and propulsion mechanism for a biologically inspired water runner robot

Floyd, S., Sitti, M.

IEEE transactions on robotics, 24(3):698-709, IEEE, 2008 (article)

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[BibTex]

pi Floyd, S., Sitti, M. Design and development of the lifting and propulsion mechanism for a biologically inspired water runner robot IEEE transactions on robotics, 24(3):698-709, IEEE, 2008 (article)

[BibTex]

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Control of Cell Behavior by Aligned Micro/Nanofibrous Biomaterial Scaffolds Fabricated by Spinneret-Based Tunable Engineered Parameters (STEP) Technique

Nain, A. S., Phillippi, J. A., Sitti, M., MacKrell, J., Campbell, P. G., Amon, C.

Small, 4(8):1153-1159, Wiley Online Library, 2008 (article)

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[BibTex]

pi Nain, A. S., Phillippi, J. A., Sitti, M., MacKrell, J., Campbell, P. G., Amon, C. Control of Cell Behavior by Aligned Micro/Nanofibrous Biomaterial Scaffolds Fabricated by Spinneret-Based Tunable Engineered Parameters (STEP) Technique Small, 4(8):1153-1159, Wiley Online Library, 2008 (article)

[BibTex]

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Rolling and spinning friction characterization of fine particles using lateral force microscopy based contact pushing

Sümer, B., Sitti, M.

Journal of Adhesion Science and Technology, 22(5-6):481-506, Taylor & Francis Group, 2008 (article)

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[BibTex]

pi Sümer, B., Sitti, M. Rolling and spinning friction characterization of fine particles using lateral force microscopy based contact pushing Journal of Adhesion Science and Technology, 22(5-6):481-506, Taylor & Francis Group, 2008 (article)

[BibTex]

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Modeling the soft backing layer thickness effect on adhesion of elastic microfiber arrays

Long, R., Hui, C., Kim, S., Sitti, M.

Journal of Applied Physics, 104(4):044301, AIP, 2008 (article)

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Project Page [BibTex]

pi Long, R., Hui, C., Kim, S., Sitti, M. Modeling the soft backing layer thickness effect on adhesion of elastic microfiber arrays Journal of Applied Physics, 104(4):044301, AIP, 2008 (article)

Project Page [BibTex]

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Cross-talk compensation in atomic force microscopy

Onal, C. D., Sümer, B., Sitti, M.

Review of scientific instruments, 79(10):103706, AIP, 2008 (article)

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[BibTex]

pi Onal, C. D., Sümer, B., Sitti, M. Cross-talk compensation in atomic force microscopy Review of scientific instruments, 79(10):103706, AIP, 2008 (article)

[BibTex]

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Adhesion of biologically inspired oil-coated polymer micropillars

Cheung, E., Sitti, M.

Journal of Adhesion Science and Technology, 22(5-6):569-589, Taylor & Francis Group, 2008 (article)

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[BibTex]

pi Cheung, E., Sitti, M. Adhesion of biologically inspired oil-coated polymer micropillars Journal of Adhesion Science and Technology, 22(5-6):569-589, Taylor & Francis Group, 2008 (article)

[BibTex]

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Vision-based feedback strategy for controlled pushing of microparticles

Lynch, N. A., Onal, C. D., Schuster, E., Sitti, M.

Journal of Micro-Nano Mechatronics, 4(1-2):73-83, Springer-Verlag, 2008 (article)

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[BibTex]

pi Lynch, N. A., Onal, C. D., Schuster, E., Sitti, M. Vision-based feedback strategy for controlled pushing of microparticles Journal of Micro-Nano Mechatronics, 4(1-2):73-83, Springer-Verlag, 2008 (article)

[BibTex]

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Effect of quantity and configuration of attached bacteria on bacterial propulsion of microbeads

Behkam, B., Sitti, M.

Applied Physics Letters, 93(22):223901, AIP, 2008 (article)

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[BibTex]

pi Behkam, B., Sitti, M. Effect of quantity and configuration of attached bacteria on bacterial propulsion of microbeads Applied Physics Letters, 93(22):223901, AIP, 2008 (article)

[BibTex]

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Preface to the Journal of Micro-Nano Mechatronics

Dario, P., Fukuda, T., Sitti, M.

Journal of Micro-Nano Mechatronics, 4(1-2):1-1, Springer-Verlag, 2008 (article)

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[BibTex]

pi Dario, P., Fukuda, T., Sitti, M. Preface to the Journal of Micro-Nano Mechatronics Journal of Micro-Nano Mechatronics, 4(1-2):1-1, Springer-Verlag, 2008 (article)

[BibTex]

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A legged anchoring mechanism for capsule endoscopes using micropatterned adhesives

Glass, P., Cheung, E., Sitti, M.

IEEE Transactions on Biomedical Engineering, 55(12):2759-2767, IEEE, 2008 (article)

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Project Page [BibTex]

pi Glass, P., Cheung, E., Sitti, M. A legged anchoring mechanism for capsule endoscopes using micropatterned adhesives IEEE Transactions on Biomedical Engineering, 55(12):2759-2767, IEEE, 2008 (article)

Project Page [BibTex]

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Dynamic modeling of stick slip motion in an untethered magnetic microrobot

Pawashe, C., Floyd, S., Sitti, M.

Proceedings of Robotics: Science and Systems IV, Zurich, Switzerland, 2008 (article)

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[BibTex]

pi Pawashe, C., Floyd, S., Sitti, M. Dynamic modeling of stick slip motion in an untethered magnetic microrobot Proceedings of Robotics: Science and Systems IV, Zurich, Switzerland, 2008 (article)

[BibTex]

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Frequency analysis with coupled nonlinear oscillators

Buchli, J., Righetti, L., Ijspeert, A.

Physica D: Nonlinear Phenomena, 237(13):1705-1718, August 2008 (article)

Abstract
We present a method to obtain the frequency spectrum of a signal with a nonlinear dynamical system. The dynamical system is composed of a pool of adaptive frequency oscillators with negative mean-field coupling. For the frequency analysis, the synchronization and adaptation properties of the component oscillators are exploited. The frequency spectrum of the signal is reflected in the statistics of the intrinsic frequencies of the oscillators. The frequency analysis is completely embedded in the dynamics of the system. Thus, no pre-processing or additional parameters, such as time windows, are needed. Representative results of the numerical integration of the system are presented. It is shown, that the oscillators tune to the correct frequencies for both discrete and continuous spectra. Due to its dynamic nature the system is also capable to track non-stationary spectra. Further, we show that the system can be modeled in a probabilistic manner by means of a nonlinear Fokker–Planck equation. The probabilistic treatment is in good agreement with the numerical results, and provides a useful tool to understand the underlying mechanisms leading to convergence.

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link (url) DOI [BibTex]

mg Buchli, J., Righetti, L., Ijspeert, A. Frequency analysis with coupled nonlinear oscillators Physica D: Nonlinear Phenomena, 237(13):1705-1718, August 2008 (article)

link (url) DOI [BibTex]

2005

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Adhesive microstructure and method of forming same

Fearing, R. S., Sitti, M.

March 2005, US Patent 6,872,439 (misc)

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[BibTex]

2005

pi Fearing, R. S., Sitti, M. Adhesive microstructure and method of forming same March 2005, US Patent 6,872,439 (misc)

[BibTex]

2004

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E. Coli Inspired Propulsion for Swimming Microrobots

Behkam, Bahareh, Sitti, Metin

pages: 1037–1041, 2004 (article)

Abstract
Medical applications are among the most fascinating areas of microrobotics. For long, scientists have dreamed of miniature smart devices that can travel inside the human body and carry out a host of complex operations such as minimally invasive surgery (MIS), highly localized drug delivery, and screening for diseases that are in their very early stages. Still a distant dream, significant progress in micro and nanotechnology brings us closer to materializing it. For such a miniature device to be injected into the body, it has to be 800 μm or smaller in diameter. Miniature, safe and energy efficient propulsion systems hold the key to maturing this technology but they pose significant challenges. Scaling the macroscale natation mechanisms to micro/nano length scales is unfeasible. It has been estimated that a vibrating-fin driven swimming robot shorter than 6 mm can not overcome the viscous drag forces in water. In this paper, the authors propose a new type of propulsion inspired by the motility mechanism of bacteria with peritrichous flagellation, such as Escherichia coli, Salmonella typhimurium and Serratia marcescens. The perfomance of the propulsive mechanism is estimated by modeling the dynamics of the motion. The motion of the moving organelle is simulated and key parameters such as velocity, distribution of force and power requirments for different configurations of the tail are determined theoretically. In order to validate the theoretical result, a scaled up model of the swimming robot is fabricated and characterized in silicone oil using the Buckingham PI theorem for scaling. The results are compared with the theoretically computed values. These robots are intended to swim in stagnation/low velocity biofluid and reach currently inaccessible areas of the human body for disease inspection and possibly treatment. Potential target regions to use these robots include eyeball cavity, cerebrospinal fluid and the urinary system.

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link (url) DOI [BibTex]

2004

pi Behkam, Bahareh, Sitti, Metin E. Coli Inspired Propulsion for Swimming Microrobots pages: 1037–1041, 2004 (article)

link (url) DOI [BibTex]

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Atomic force microscope probe based controlled pushing for nanotribological characterization

Sitti, M.

IEEE/ASME Transactions on mechatronics, 9(2):343-349, IEEE, 2004 (article)

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[BibTex]

pi Sitti, M. Atomic force microscope probe based controlled pushing for nanotribological characterization IEEE/ASME Transactions on mechatronics, 9(2):343-349, IEEE, 2004 (article)

[BibTex]