Giant reversible deformations in a shape-memory composite material

Ti2NiCu based composite nanotweezers with a shape memory effect and its use for DNA bunches 3D manipulation

“…The purpose of the present paper is to consider in detail the new concept of shape memory nanotweezers [11][12][13] applied specifically for macromolecules bunches manipulation. The physical principals and nanotechnological approaches to engineering and control of the processes of DNA manipulation will be outlined together with preliminary experiments on the co-processing of DNA on graphene substrate.…”

TWSME of a NiTi strip in free bending conditions: experimental and theoretical approach

“…Larger deflections can be obtained by increasing the initial strain of the SMA. Irzhak et al [18] observed giant reversible bending deformation at a sub-micrometre scale by using a nichel-SMA composite strip. Furthermore, some authors focused on the effects of the pre-strain, recovery temperature and bending deformation on the shape memory effects [9,[19][20][21][22][23][24].…”

New system for manipulation of nanoobjects based on composite Ti2NiCu/Pt nanotweezers with shape memory effect

“…Alternatively, materials with shape memory effect (SME) demonstrate the large deformation (up to 10%) and strong force at shape recovery. For example, Ti2NiCu shape memory alloy (SMA) can generate actuation stress up to 500 MPa at temperatures of phase transition between 30 °C and 70 °C [2][3][4][5] and withstands more than 2000 heating-cooling cycles [6]. High durability, small size and, respectively, small energy consumption makes SMA nanotweezers one of the best candidates to use in vacuum chambers of scanning electron and ion microscopes.…”