The initially spherical 𝛼-, 𝛽-, and 𝛾-glycine nanocrystals, as well as representative final nanocrystals resulting from crystal growth in the presence of the 0.6 V/nm intensity electric field vector, are shown in figure . The effect of the applied electric field on the crystal morphology is to compress the crystal along the z-axis and to elongate the crystal along the x-axis, the principal axis, in the direction of the electric field vector. This result is akin to the observations of English and MacElroy who observed the elongation of methane hydrate crystals along the electric field vector, further demonstrating the potential of electric fields to aid in crystal habit control in pharmaceutical applications .