| Q1: |
I have got vibration problems! What can I do? |
| A1: |
High-precision measurements and high-resolution microscopy, especially down to the nanometer-scale, can be easily disturbed by vibrations from outside. Possible sources are: |
- Windows 98/Me/NT/2000/XP
- acoustic vibrations (>20 Hz)
- motorized equipment and machinery (10-500 Hz)
|
There are passive and active isolation systems to damp these disturbing vibrations.
Passive systems will often be applied by mounting the system on rubber stamps inside an acoustic hood or using a heavy table mounted on soft springs. This soulution can be used successfully to isolate relatively high frequencies (>50 Hz) but beware this is the worst possible "solution" for low frequency building vibrations.
Active systems damp low frequency vibrations actively, especially in the range where passive systems have their resonance frequency.
|
| Q2: |
Why active damping and what are the limits of passive damping? |
| A2: |
Passive systems do not damp vibrations at low frequencies because of their resonance frequency in that region. To improve this disatvantage passive system have to be very soft resulting in higher latencies between disturbances.
Active systems overcome this limit when applying inertial velocity in a feedback loop (analog electronic).
The advantages of active systems over passive systems are: |
| |
- inherently stiff
- rapid recovery from shock (1-10ms)
- no air required
- no setup time required
- small size
- better performance than the best passive systems
|
| Q3: |
How can I isolate low frequency vibrations,
caused by floor, traffic, sound, etc.? |
| A3: |
Low frequency vibrations can be damped by active vibration isolation systems (eg. the TS- and AVI-serie). |
| Q6: |
What kind of load capacities and instrument dimensions can be covered by the TS- and the AVI-systems? |
| A6: |
The TS- and the AVI-systems covers a wide range:
system |
max. load |
dimensions |
TS150 |
150 kg |
400x450x75 mm3 |
TS140 |
140 kg |
500x600x80 mm3 |
TS300LT |
120 kg |
600x800x105 mm3 |
TS300 |
300 kg |
600x800x105 mm3 |
AVI350M |
350 kg |
customizable |
AVI400M |
800 kg |
customizable |
|
| Q7: |
What are the typical applications of the TS-Systems? |
| A7: |
System |
Applications |
TS150 |
AFM, optical Microscopy, SNOM, ... |
TS140 |
AFM, LSM, SNOM, Profilometry, ... |
TS300LT |
Profilometry, Nano Lithography, ... |
TS300 |
Profilometry, Nano Indentation, ... |
AVI350M |
SEM, UHV-STM, ... |
AVI400M |
SEM, UHV-STM, ... |
|
| Q9: |
Are there different top plates available? |
| A9: |
Yes, it's possible to select between aluminium and stainless steel.
Additionally you can select between a blank top plate and a top plate with a M6x50mm grid |
| Q11: |
Must the systems be calibrated? |
| A11: |
No, all systems will adjust themselves automatically and balance different load distributions of the setup. |
