| 2021 | IROS | Momentum based Whole-Body Optimal Planning for a Single-Spherical-Wheeled Balancing Mobile Manipulator. | Roberto Shu, Ralph L. Hollis |
| 2019 | ICRA | The Mechanics and Control of Leaning to Lift Heavy Objects with a Dynamically Stable Mobile Robot. | Fabian Sonnleitner, Roberto Shu, Ralph L. Hollis |
| 2016 | ICRA | Initial results for a ballbot driven with a spherical induction motor. | Greg Seyfarth, Ankit Bhatia, Olaf Sassnick, Michael Shomin, Masaaki Kumagai, Ralph L. Hollis |
| 2015 | ICRA | Six-stator spherical induction motor for balancing mobile robots. | Ankit Bhatia, Masaaki Kumagai, Ralph L. Hollis |
| 2015 | ICRA | Sit-to-stand assistance with a balancing mobile robot. | Michael Shomin, Jodi Forlizzi, Ralph L. Hollis |
| 2015 | ICRA | Operation of the ballbot on slopes and with center-of-mass offsets. | Bhaskar Vaidya, Michael Shomin, Ralph L. Hollis, George Kantor |
| 2014 | IROS | Fast, dynamic trajectory planning for a dynamically stable mobile robot. | Michael Shomin, Ralph L. Hollis |
| 2013 | ICRA | Development and control of a three DOF spherical induction motor. | Masaaki Kumagai, Ralph L. Hollis |
| 2013 | ICRA | Differentially flat trajectory generation for a dynamically stable mobile robot. | Michael Shomin, Ralph L. Hollis |
| 2013 | ICRA | Bimanual haptic teleoperation for discovering and uncovering buried objects. | Hanns Tappeiner, Roberta L. Klatzky, Patrick Rowe, Jorgen Pedersen, Ralph L. Hollis |
| 2012 | ICRA | Development and control of a three DOF planar induction motor. | Masaaki Kumagai, Ralph L. Hollis |
| 2012 | ICRA | Planning in high-dimensional shape space for a single-wheeled balancing mobile robot with arms. | Umashankar Nagarajan, Byungjun Kim, Ralph L. Hollis |
| 2012 | ICRA | Integrated planning and control for graceful navigation of shape-accelerated underactuated balancing mobile robots. | Umashankar Nagarajan, George Kantor, Ralph L. Hollis |
| 2012 | MICCAI | Hand-Held Force Magnifier for Surgical Instruments: Evolution toward a Clinical Device. | Randy Lee, Bing Wu, Roberta L. Klatzky, Vikas Shivaprabhu, John M. Galeotti, Samantha Horvath, Mel W. Siegel, Joel S. Schuman, Ralph L. Hollis, George D. Stetten |
| 2011 | ICRA | Development of a three-dimensional ball rotation sensing system using optical mouse sensors. | Masaaki Kumagai, Ralph L. Hollis |
| 2009 | HRI | Human-robot physical interaction with dynamically stable mobile robots. | Umashankar Nagarajan, George Kantor, Ralph L. Hollis |
| 2009 | HRI | Human-robot physical interaction with dynamically stable mobile robots. | Umashankar Nagarajan, George Kantor, Ralph L. Hollis |
| 2009 | ICRA | Trajectory planning and control of an underactuated dynamically stable single spherical wheeled mobile robot. | Umashankar Nagarajan, George Kantor, Ralph L. Hollis |
| 2009 | ICRA | State transition, balancing, station keeping, and yaw control for a dynamically stable single spherical wheel mobile robot. | Umashankar Nagarajan, Anish Mampetta, George Kantor, Ralph L. Hollis |
| 2009 | ICRA | Remote haptic feedback from a dynamic running machine. | Hanns Tappeiner, Sarjoun Skaff, Tomas Szabo, Ralph L. Hollis |
| 2008 | SIGGRAPH | Maglev haptics: butterfly haptic's new user interface technology. | Ralph L. Hollis |
| 2006 | ICRA | A Dynamically Stable Single-wheeled Mobile Robot with Inverse Mouse-ball Drive. | Tom Lauwers, George Kantor, Ralph L. Hollis |
| 2005 | ISRR | One Is Enough!. | Tom Lauwers, George Kantor, Ralph L. Hollis |
| 2004 | ICRA | Free-roaming Planar Motors: Toward Autonomous Precision Planar Mobile Robots. | Tom Lauwers, Zack K. Edmondson, Ralph L. Hollis |
| 2004 | ICRA | Design and Operation of a Force-reflecting Magnetic Levitation Coarse-fine Teleoperation System. | Bertram J. Unger, Ralph L. Hollis |
| 2003 | ICRA | A telemanipulation system for psychophysical investigation of haptic interaction. | Bertram J. Unger, Roberta L. Klatzky, Ralph L. Hollis |
| 2001 | IROS | A precision manipulator module for assembly in a minifactory environment. | H. Benjamin Brown, Patrick M. Muir, Alfred A. Rizzi, Maria C. Sensi, Ralph L. Hollis |
| 2001 | IROS | Comparison of 3-D haptic peg-in-hole tasks in real and virtual environments. | Bertram J. Unger, A. Nicolaidis, Peter J. Berkelman, A. Thompson, Roberta L. Klatzky, Ralph L. Hollis |
| 2000 | ICRA | Cooperative Coverage of Rectilinear Environments. | Zack J. Butler, Alfred A. Rizzi, Ralph L. Hollis |
| 2000 | ICRA | Visually Guided Coordination for Distributed Precision Assembly. | Michael L. Chen, Shinji Kume, Alfred A. Rizzi, Ralph L. Hollis |
| 2000 | ICRA | Optical Coordination Sensor for Precision Cooperating Robots. | Wing-Choi Ma, Alfred A. Rizzi, Ralph L. Hollis |
| 1999 | ICRA | Interaction with a Realtime Dynamic Environment Simulation Using a Magnetic Levitation Haptic Interface Device. | Peter J. Berkelman, Ralph L. Hollis, David Baraff |
| 1999 | ICRA | Fluorescent Dye Based Optical Position Sensing for Planar Linear Motors. | Gregory A. Fries, Alfred A. Rizzi, Ralph L. Hollis |
| 1998 | ICRA | Integrated Precision 3-DOF Position Sensor for Planar Linear Motors. | Zack J. Butler, Alfred A. Rizzi, Ralph L. Hollis |
| 1998 | ICRA | 3-DOF Closed-Loop Control for Planar Linear Motors. | Arthur E. Quaid, Ralph L. Hollis |
| 1997 | ICRA | Force characterization and commutation of planar linear motors. | Arthur E. Quaid, Yangsheng Xu, Ralph L. Hollis |
| 1997 | ICRA | Agile assembly architecture: an agent based approach to modular precision assembly systems. | Alfred A. Rizzi, Jay Gowdy, Ralph L. Hollis |
| 1996 | ICRA | Cooperative 2-DOF robots for precision assembly. | Arthur E. Quaid, Ralph L. Hollis |
| 1996 | IROS | Vision-based visual/haptic registration for WYSIWYF display. | Yasuyoshi Yokokohji, Ralph L. Hollis, Takeo Kanade |
| 1996 | VR | What You Can See is What You Can Feel - Development of Visual/Haptic Interface to Virtual Environment. | Yasuyoshi Yokokohji, Ralph L. Hollis, Takeo Kanade |
| 1995 | IROS | Interacting with virtual environments using a magnetic levitation haptic interface. | Peter J. Berkelman, Ralph L. Hollis, Septimiu E. Salcudean |
| 1995 | IROS | Magnetic and optical-fluorescence position sensing for planar linear motors. | Andrew E. Brennemann, Ralph L. Hollis |
| 1994 | ICRA | Accurate Alignment of Laminate Materials Using Sensor-Based Robot Techniques. | Andrew E. Brennemann, Robert Hammer, Ralph L. Hollis, William V. Jecusco II |
| 1993 | ICRA | Precision Assembly with a Magnetically Levitated Wrist. | Sang-Rok Oh, Ralph L. Hollis, Septimiu E. Salcudean |
| 1992 | ICRA | Design and control of an air-bearing supported three degree-of-freedom fine positioner. | Robert Hammer, Ralph L. Hollis, C. H. An, F. Henriks |
| 1992 | ICRA | Real and virtual coarse-fine robot bracing strategies for precision assembly. | Ralph L. Hollis, Robert Hammer |
| 1992 | ICRA | A force-reflecting teleoperation system with magnetically levitated master and wrist. | Septimiu E. Salcudean, N. M. Wong, Ralph L. Hollis |
| 1989 | ICRA | A vision based correlator to actively damp vibrations of a coarse-fine manipulator. | T. E. Weber, Ralph L. Hollis |
| 1988 | ICRA | Sensors for robotic assembly. | Andrew E. Brennemann, Ralph L. Hollis, Mark A. Lavin, Bela L. Musits |
| 1988 | ICRA | A magnetically levitated fine motion wrist: kinematics, dynamics and control. | Septimiu E. Salcudean, Ralph L. Hollis |
| 1985 | ICRA | A planar XY robotic fine positioning device. | Ralph L. Hollis |