Relativity Electrostatic subframing System

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  • アプリケーション
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Relativity Electrostatic subframing System
  • Time resolution:

    Relativity performs transitions between subframe regions in less than 100 ns.
  • Continuous kHz-scale video:

    Relativity can sustain subframe rates up to 100 kHz.
  • Custom applications:

    Integrate Relativity with an in situ holder, laser, IDES Electrostatic Dose Modulator, or other accessories.
  • Simple field installation:

    Relativity’s electrostatic optics are installed through an accessory port.
  • Out of sight, out of mind:

    Optics pneumatically retract out of the beam when they are not in use.
  • Acuity Edge analysis server:

    Automated data processing with segmentation, denoising, and drift correction helps you get the most out of your data.
  • Advanced control software:

    Seamlessly move between measurement programs with our intuitive interface, or use our powerful tools to design something new.

How dose Relativity work?

Relatvity installs an electrostatic optics assembly in a wide-angle camera port. These optics rapidly deflect the image data to different regions (or subframes) of the camera in a programmable sequence. Each camera readout contains a tiled array of crisp, blur-free subframes. Raw data is automatically analyzed to give a stack of images.

Applicable models:
JEM-ARM300F/300F2, JEM-ARM200F, NEOARM, JEM-F200, JEM-2100Plus, JEM-2100F

Left: 19,200 fps continuous video with atomic resolution, obtained using a gold nanoparticle sample by GRAND ARM™ at 80 kV.
Top: One sub frame out of left tiling data with 52 μs exposure time.


仕様/オプション SPEC / OPTION

Standard configuration (SD)(1) Imaginf filter configuration (IF)(1)
Image sensor location Bopttom camera chamber After imaging filter
Relativity deflector module install location Wide angle camera port(2) Wide angle camera port(2)
Subframe transition time < 100 ns < 50 ns
Minimum subframe exposure 500 ns 250 ns
Maximum subfame rate (continuous) 100 kHz 300 kHz
Maximum subframe size on camera 7 mm x 5.3 mm(3)
460 x 350 pixels (by Gatan OneView)
Native subframe array layout (no overlap)(3)(4) 8 x 10 at 200 kV or lower, 7 x 8 at 300 kV
(by Gatan OneView)
Subframe array layouts(3)(5) 200 kV: 8 x 10, 11 x 11, 12 x 12,
13 x 13, 14 x 14, 15 x 15
300 kV: 7 x 8, 9 x 9, 10 x 10, 11 x 11, 12 x 12
(by Gatan OneView)
200 kV: 4 x 4, ..., 10 x 10
300 kV: 4 x 4, ..., 14 x 14
Auxiliary logic outputs
   Sample rate
4 x TTL-compatible outputs
125 MS/S
4 x TTL-compatible outputs
125 MS/S
Trigger input 1 x TTL-compatible output 1 x TTL-compatible output
  • Select one of these configurations to order. Custom configurations can be made available on request.
  • In the JEM-2100Plus, Relativity deflector module is installed in the left-side dark field STEM detector port.
  • The subframe size for SD configuration is limited by the spacing between deflector electrodes (the ‘deflector gap’). Detailed information is available in the specification sheet of Relativity.
  • The subframe size for IF configuration is limited by a circular aperture installed on the top of Relativity deflector module. The subframe sizes are also affected by imaging conditions.
  • Due to geometrical constraints, different subframe array layouts are optimal for different detector sizes. Gatan OneView camera is chosen for illustrative purposes. Relativity system is compatible with nearly all commercially-available cameras.



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