■ PPM5000 PiezoPatch Micromanipulator 顯微操作儀
•Piezo-motor driven •Ultra high resolution (<1 nm/step) •Super low drift (<4 nm/h)
Features
PiezoPatch™ Micromanipulator (PPM5000) is a unique piezo-motor driven micromanipulator with ultra high resolution (<1 nm/step), super low drift (<4 nm/h), and long travel range (~10 mm/axis). It is ideal for patch-clamp, electrophysiology and other high precision applications within the life sciences. PiezoPatch establishes a new standard in micromanipulator design.
Resolution and drift
At the heart of the PiezoPatch is WPI™s proprietary SonicWave™ piezo-motor that is controlled at 1 arc-second (1/3600 of a degree) per step. This angular resolution translates to a theoretical linear movement of ~0.4nm per step, an ultra high resolution that is beyond normal measurement capability using standard methods. Another key advantage of the PiezoPatch motor is the extreme stability. When de-energized, the SonicWave™ motor is completely locked with absolutely no rotation. This locking mechanism completely eliminates mechanical drift in the micromanipulator. This design is significantly different compared to all other types of electromagnetic motors or piezo-operated micromanipulators, which still require electric power to hold at the stopped position. Electric power can introduce electrical noise, which can interfere with experimental measurements. Furthermore, instabilities in electrical power supply can cause drift of the micromanipulator. Thermal drift is also caused by heat generated in the stopped motor. These problems are completely eliminated by the PiezoPatch SonicWave™ motor, since it does not require power to maintain its stopped position during the experiment. One additional feature of the SonicWave™ motor is its extremely high output torque compared to motors of same size. This enables skip free precise movement of the micromanipulator even under heavy load.
PiezoPatch has three distinct movement modes: Step, Continuous, and Penetration. Continuous mode allows the micromanipulator to move quickly (continuously) from the starting position towards the object. Step mode enables ultra fine movements to be controlled by a single step in increments as small as 1 nm per step. Penetration mode is used when the glass micropipette is positioned close to the cell membrane and the x-axis piezo motor is then activated using the joystick button. This causes the micropipette to penetrate the membrane at high speed while minimizing membrane disturbance.
Accessories
The ergonomic joystick controller can move each axis or all axes in three coordinate directions simultaneously. The speed of the travel is determined by the deflection on the joystick. Since each movement is too fine to be visually observed, a specially designed acoustic feedback control is included to keep operators aware of the actuation of the manipulator. To improve the productivity during use, the micropipette can be exchanged rapidly without remounting the entire micromanipulator and spending hours repositioning the capillary. The Rotary Pivot Base allows the micromanipulator to rotate 360° horizontally. This base has a special mounting pattern allowing it to be mounted directly on to a standard Vibration-Free Platform (VFP), Vibration-Free Workstation (VFW), or a Universal Manipulator Stand (501622 or 501623). The universal capillary holder and headstage adaptor can be easily rotated and adjusted to the desired height and angle. The headstage adaptor fits most headstages from Axon and HEKA and can be customized to fit other manufacturers headstages (contact WPI). PiezoPatch is designed to be fully ambidextrous, therefore there is no need to purchase both left-handed and right-handed versions to fit everyone in the lab.
| TRAVEL DISTANCE | 10 mm each axis |
| VELOCITY RANGE: PENETRATION MODE | 10mm/s - 100mm/s |
| VELOCITY RANGE: CONTINUOUS MODE | 0.5-500 µm/s |
| VELOCITY RANGE: STEP MODE | 0.005-.5 µm/s |
| RESOLUTION: CONTINUOUS MODE | 0.1 µm |
| RESOLUTION: STEP MODE | 0.001 µm per step |
| DEPTH OF PENETRATION: STEP SIZE MODE | 0.5-5 µm per step |
| LONG TERM STABILITY: | <4 nm drifting/hour @ 20° C |
| OPERATING VOLTAGE: | 12V DC |
| SINGLE AXIS CONSUMPTION, MAX. SPEED: | <300 mA |
| TOTAL CONSUMPTION, MAX. SPEED: | <900 mA |
| DIMENSIONS: ELECROMECHANICAL MODULE: | 10.4(h) x 4.7(w)x 5.1(l) in. 265(h) x 120(w) x 130(l) mm |
| DIMENSIONS: CONTROLLER: | 3.9(h) x 3.9(w) x 4.9(l) in. 165(h) x 100(w) x 125(l) mm |
| WEIGHT: ELECTROMECHANICAL MODULE: | 2.2 kg |
| WEIGHT: CONTROLLER: | 0.65 kg |
