ELECTROCHEMISTRY DEVICE WITH IMPROVED ELECTRODE ARRANGEMENT
An electrochemistry device for electrically measuring a sample during electron microscope imaging includes: a planar chip having a first longitudinal end along which at least three laterally spaced contact electrodes are positioned; a laterally extending working electrode in electrical communication with a first of the three contact electrodes; a counter electrode spaced from and at least partially encircling the working electrode, the counter electrode in electrical communication with a second of the three contact electrodes; and a reference electrode in electrical communication with a third of the three contact electrodes, the reference electrode positioned outside of an area defined between the working electrode and counter electrode.
1 . An electrochemistry device for electrically measuring a sample during electron microscope imaging, the electrical device comprising:
a planar chip having a first longitudinal end along which at least three laterally spaced contact electrodes are positioned;
a laterally extending working electrode in electrical communication with a first of the three contact electrodes;
a counter electrode spaced from and at least partially encircling the working electrode, the counter electrode in electrical communication with a second of the three contact electrodes; and
a reference electrode in electrical communication with a third of the three contact electrodes, the reference electrode positioned outside of an area defined between the working electrode and counter electrode.
2 . The electrochemistry device of claim 1 , wherein no portion of the reference electrode is positioned between any portion of the working electrode and any portion of the counter electrode.
3 . The electrochemistry device of claim 1 , wherein the working electrode is an elongate linear electrically conducting member having a laterally extending length that is greater than its width.
4 . The electrochemistry device of claim 1 , wherein the working electrode is positioned on an electron-transparent window.
5 . The electrochemistry device of claim 4 , wherein the electron-transparent window is aligned with a beveled aperture formed in the planar chip.
6 . The electrochemistry device of claim 4 , wherein the electron-transparent window extends laterally.
7 . The electrochemistry device of claim 6 , wherein the window is longer in a lateral direction than a longitudinal direction that is perpendicular to the lateral direction.
8 . The electrochemistry device of claim 1 , further including a patterned insulator layer that insulates leads connecting each of the three contact electrons from a respective electrode from a wet cell environment on the electrochemistry device.
9 . The electrochemistry device of claim 1 , wherein the device is rotated around a longitudinal axis during imaging.