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1. Indication of a twist-grain-boundary-twist-bend phase of flexible core bent-shape chiral dimers

   https://doi.org/10.1039/c8sm02338g  

   Murachver, Matthew T.; Nemati, Ahlam; Salamończyk, Mirosław; Bullock, Carson; Sabata, Zachary; Rahmani, Haumed; Vorobiova, Tetiana; Izadnegahdar, Alain; Salili, Seyyed Muhammad; Norman, Victoria; et al (April 2019, Soft Matter)

   The effect of the molecular chirality of chiral additives on the nanostructure of the twist-bend nematic (N TB ) liquid crystal phase with ambidextrous chirality and nanoscale pitch due to spontaneous symmetry breaking is studied. It is found that the ambidextrous nanoscale pitch of the N TB phase increases by 50% due to 3% chiral additive, and the chiral transfer among the biphenyl groups disappears in the N TB * phase. Most significantly, a twist-grain boundary (TGB) type phase is found at c > 1.5 wt% chiral additive concentrations below the usual N* phase and above the non-CD active N TB * phase. In such a TGB type phase, the adjacent blocks of pseudo-layers of the nanoscale pitch rotate across the grain boundaries. 

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2. Vacuum expectation value of twist fields

   https://doi.org/10.1103/PhysRevD.96.066026  

   Belitsky, A. V. (September 2017, Physical Review D)
3. Van der Waals Nanowires with Continuously Variable Interlayer Twist and Twist Homojunctions

   https://doi.org/10.1002/adfm.202006412  

   Sutter, Peter; Idrobo, Juan‐Carlos; Sutter, Eli (December 2020, Advanced Functional Materials)

   Abstract Moiré patterns at van der Waals interfaces between twisted 2D crystals give rise to distinct optoelectronic excitations, as well as, narrowly dispersive bands responsible for correlated electron phenomena. Contrasting with the conventional, mechanically stacked planar twist moirés, recent work shows twisted van der Waals interfaces spontaneously formed in nanowires of layered crystals, where Eshelby twist due to axial screw dislocations stabilizes a chiral structure with small interlayer rotation. Here, the realization of tunable twist in germanium(II) sulfide (GeS) van der Waals nanowires is reported. Tapered nanowires host continuously variable interlayer twist. Homojunctions between dislocated (chiral) and defect‐free (achiral) segments are obtained by triggering the emission of axial dislocations during growth. Measurements across such junctions, implemented here using local absorption and luminescence spectroscopy, provide a convenient tool for detecting twist effects. The results identify a versatile system for 3D twistronics, probing moiré physics, and for realizing moiré architectures without equivalent in planar systems. 

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4. Capillary-Induced Hair Twist

   https://doi.org/10.1021/acs.langmuir.9b01441  

   Kovanko, Lauren; Tawfick, Sameh (September 2019, Langmuir)
5. A twist for nanolight

   https://doi.org/10.1038/s41563-023-01586-1  

   Dai, Siyuan; Ma, Qiong (July 2023, Nature Materials)