Category: Automation, Nano-Automation

High Load Hexapod Test and Assembly

Testing and Qualifying Positioning Systems for Multi-Ton Loads The nano- and micro world is not limited to microscopic loads. Optics in astronomical telescopes and semiconductor lithography equipment are getting larger and heavier, while alignment tolerances that need to be met are getting tighter. Hexapod parallel-kinematic motion and positioning systems are often used in multi-axis alignment […]

Fast Optical Alignment for SiP Production

Industry-leading speed and capability is an enabler for “photonomics” from wafer to packaged device;  2016 R&D 100 award winner! Problem The convergence of photonics and semiconductors promises a leap in data throughput, parallelism and energy efficiency. Design and materials challenges have by now been addressed. Practicalities of testing and packaging have not. Test and packaging […]

Image Stabilization and Multi-Axis Patterned Motion Simulation

Motion simulation is crucial in the evaluation of many devices, including vibrating testing of vehicles or airplanes, response testing of accelerometers or gyroscopes and image sensors such as those used in high end cameras and smartphones. Repeatable multi-axis motion simulation can help tweak advanced algorithms in image stabilization systems and verify the performance of opto-mechanical […]

Fast Piezo Scanning Stages for Pixel Sub-Stepping, Image Resolution Enhancement, Super-Resolution Imaging and Vibration and Shake Suppression

Increasing the Resolution of Optical Sensor Chips: Applications of Pixel Sub-Stepping Optical Resolution in Imaging Low light conditions create difficult conditions for imaging applications from astronomy to microscopy. Low light intensity means neither the resolution of the chip nor the exposure time for changing or moving objects can be freely chosen. Typical applications are fluorescence […]

Performance of Direct-Drive Linear Motor Stages in Precision Positioning Applications

Brushless direct drive linear motors provide advantages over leadscrew and ballscrew driven positioning stages when it comes parameters such as acceleration, maximum speed, accuracy, constancy of velocity, and avoidance of vibration. This article explains types of motors, encoders and provides test data of PI’s new V-551 linear motor stage.   Iron Core and Ironless Motors […]

Scanning Performance of Air Bearings

1.  Introduction A common application in which an air bearing is specified is scanning. Scanning involves moving either a work-piece or an optic at a constant velocity, while a reading or writing operation takes place. Such operations include printing and image-setting (i.e., writing) and imaging (i.e., reading). While the physical act of writing an image […]

Advances in Piezo Mechanics Aid Eye Surgery

Piezo motion-based mechanisms provide a variety of features that are highly sought after in life-science and medical engineering applications, such sterile ceramic designs and lubricant-free drives. Ceramics are also non-magnetic, an advantage in high-energy imaging/scanning based on strong magnetic fields. Piezo mechanisms can also provide very precise motion with incredible speed. Successful correction of vision […]

Straightness and Flatness of Air Bearings

1. Introduction When working with air bearings, we often describe the quality of motion as one of the key factors in selecting an air bearing; specifically, the straightness and flatness of travel of linear bearings and stages. Just how straight and flat? What levels of precision are achievable? In this technical note, we will discuss […]

Force & Position Control in Precision Automation

A host of applications can benefit from fast actuation systems equipped with precise metrology for controlling both force and position accurately. These include: Fast production testing of touch- and force-sensitive and haptic components; Delicate, high-speed automated assembly procedures where position vs. force is important; Testing of physical characteristics such as compliance, damping or other material […]

Silicon Photonics Test and Alignment

The need for higher performance computing and data-communication speed has led to the advent of silicon photonics. In addition, to higher performance, silicon photonics can also reduce the power requirements of next generation server farms significantly. Challenges With the advantages, this new technology also brings about several production challenges, including the need for test platforms […]

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About PI

PI (Physik Instrumente) is a leading manufacturer of precision motion control equipment, piezo motors, air bearing stages and hexapod parallel-kinematics for semiconductor applications, photonics, bio-nano-technology and medical engineering. PI has been developing and manufacturing standard & custom precision products with piezoceramic and electromagnetic drives for 4 decades. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with fifteen subsidiaries, R&D / engineering on 3 continents and total staff of more than 1,000.

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