Dynamic friction model for tendon-sheath actuated surgical robots : modelling and stability analysis by Tjahjowidodo, Tegoeh, Lau, Michael Wai Shing, Phee, Soo Jay, Do, T. N.

“…In addition, transition between two regimes is guaranteed to be smooth without using any switching functions and it permits an arbitrary configuration of sheath, i.e. helical and spatial shape. The model incorporates a set of velocity and acceleration dependent equations with a differential function and it is independent configuration of the tendon-sheath mechanism. …”
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All you need is rotation: Construction of developable strips by Maekawa, Takashi, Scholz, Felix

“…In our computational and physical examples, we demonstrate the flexibility of the method by constructing, among others, toroidal and helical windmill blades for papercraft models, curved foldings, triply orthogonal structures, and developable strips featuring a log-aesthetic directrix curve.…”
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Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √𝑠 = 7 with the ATLAS experiment TeV by Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Acerbi, E., Acharya, B. S., Adamczyk, L., Adams, D. L., Addy, T. N., Adelman, J., Aderholz, M., Adomeit, S., Adragna, P.

“…Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f 0, f L and f R over two ranges of W transverse momentum $(p_{\mathrm{T}}^{W} ): 35 < p_{\mathrm{T}}^{W}< 50\ \mbox{GeV}$ and $p_{\mathrm{T}}^{W}> 50\ \mbox{GeV}$ . …”
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The toxicity of amyloid ß oligomers by Zhao, Li Na, Long, Hon Wai, Mu, Yuguang, Chew, Lock Yue

“…Such interaction gives rises to phase transitions in the sub-structures of the Aβ peptide from α-helical to β-sheet structure. By means of a coarse-grained model, we exhibit the tendency of β-sheet structures to aggregate, thus providing further insights to the process of membrane induced aggregation. …”
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Differential growth and shape formation in plant organs by Huang, Changjin, Wang, Zilu, Quinn, David, Suresh, Subra, Hsia, K. Jimmy

“…With this understanding, we develop a broad scientific framework for a morphological phase diagram that is capable of rationalizing four configurations commonly found in plant organs: twisting, helical twisting, saddle bending, and edge waving. …”
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Low-profile and end-fire antennas for airborne applications by Chen, Zhuozhu

“…Besides designing linearly polarized end-fire antennas, a planar helical antenna with rectangular cross-section is also presented for achieving end-fire radiation of circular polarization. …”
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Magnetic Resonance Imaging Assisted by Wireless Passive Implantable Fiducial e-Markers by Gokyar, Sayim, Alipour, Akbar, Unal, Emre, Atalar, Ergin, Demir, Hilmi Volkan

“…As a proof-of-concept demonstration, a class of double-layer, sub-cm helical resonators were microfabricated and tuned to the operating frequency of 123 MHz for a three T MRI system. …”
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Polarized fragmenting jet functions in inclusive and exclusive jet production by Kang, Zhong-Bo, Xing, Hongxi, Zhao, Fanyi, Zhou, Yiyu

“…Similarly, another spin asymmetry, A TU , L cos ϕ q − ϕ S $$ {A}_{TU,L}^{\cos \left({\phi}_q-{\phi}_S\right)} $$ from polarized exclusive hadron-in-jet production in polarized ep collisions at EIC kinematics would allow us to access the helicity fragmentation functions. These observables demonstrate promising potential in investigating transverse momentum dependent PDFs and FFs and are worthwhile for further measurements.…”
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A feasibility study on computational prediction on the death domain superfamily protein oligomers by Zhang, Jiawen

“…The identity-defining step in this process is that the CARDs oligomerize into functional macromolecular protein complexes in a helical symmetry through direct interactions between individual CARDs motifs by mediating homotypic interaction. …”
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Additive manufacturing of electrochemical interfaces : simultaneous detection of biomarkers by Ho, Eugene Hong Zhuang, Ambrosi, Adriano, Pumera, Martin

“…3D-printed stainless steel helical shaped electrodes with or without surface modification with a gold (Au) film are tested as novel electrode materials for the electrochemical detection of ascorbic acid and uric acid in aqueous solutions. …”
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Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery by Lai-Iskandar, S., Li, Wenhao, Tsang, S. H., Lee, Y. H., Teo, Edwin Hang Tong

“…In our method, we resolved the difficulty in shaping fragile 3DC, and thus, various complex shape transforms (curved, helical, and wavy) can be intuitively designed via direct sculpting. …”
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A solid‐state fibriform supercapacitor boosted by host – guest hybridization between the carbon nanotube scaffold and MXene nanosheets by Yu, Chenyang, Gong, Yujiao, Chen, Ruyi, Zhang, Mingyi, Zhou, Jinyuan, An, Jianing, Lv, Fan, Guo, Shaojun, Sun, Gengzhi

“…Herein, by hosting MXene nanosheets (Ti3 C2 T x ) in the corridor of a scrolled carbon nanotube (CNT) scaffold, a MXene/CNT fiber with helical structure is successfully fabricated. These features offer open spaces for rapid ion diffusion and guarantee fast electron transport. …”
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An investigation of friction-based tendon sheath model appropriate for control purposes by Tjahjowidodo, Tegoeh, Lau, Michael Wai Shing, Phee, Soo Jay, Do, T. N.

“…A new dynamic friction model that allows accurate description of friction lag and hysteresis behavior in two regimes, i.e. presliding and sliding regimes, for a sheath in arbitrary configuration such as helical and spatial shape has been developed. In both regimes, an advanced set of velocity and acceleration dependent functions in a form of the Stribeck function and the modified normalized Bouc–Wen model are used to model friction characteristics between the tendon and the sheath. …”
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Structural and magnetic interplay in multiferroic Ho₀.₅Nd₀.₅Fe₃(BO₃)₄ by Tripathy, A., Gautam, K., Dey, K., Sahu, S. R., Ahad, A., Upadhyay, A., Sagdeo, A., Francoual, S., Bereciartua, P. J., Gudim, I., Strempfer, J., Sathe, V. G., Shukla, D. K.

“…Rare-earth iron borates, RFe3(BO3)4 (R = rare earth), are of considerable interest because of their structural and magnetic complexities due to the involvement of both 3d and 4f magnetic interactions in a helical lattice. Among them Ho0.5Nd0.5Fe3(BO3)4 has attracted the most attention, as it exhibits a multiferroic property with a large, spontaneous, and magnetic-field-induced electric polarization (P) below the antiferromagnetic transition temperature (TN∼32 K). …”
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Piscidin-1-analogs with double L- and D-lysine residues exhibited different conformations in lipopolysaccharide but comparable anti-endotoxin activities by Kumar, Amit, Mahajan, Mukesh, Awasthi, Bhanupriya, Tandon, Anshika, Harioudh, Munesh Kumar, Shree, Sonal, Singh, Pratiksha, Shukla, Praveen Kumar, Ramachandran, Ravishankar, Mitra, Kalyan, Bhattacharjya, Surajit, Ghosh, Jimut Kanti

“…High resolution NMR studies revealed that both piscidin-1 and T15,21K-piscidin-1 adopted helical structures, with latter showing a shorter helix, higher amphipathicity and cationic residues placed at optimal distances to form ionic/hydrogen bond with lipid A of LPS. …”
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Haemodynamic changes in visceral hybrid repairs of type III and type V thoracoabdominal aortic aneurysms by Ong, Chi Wei, Wee, Ian J. Y., Cui, Fangsen, Xu, Xiao Yun, Richards, Arthur Mark, Leo, Hwa Liang, Choong, Andrew M. T. L.

“…Both type III and type V TAAAs showed highly disturbed flow patterns with varying helicity values preoperatively within their respective aneurysms. …”
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Observation of the decays 𝐵0(𝑠) → Ds1(2536)∓K± by Aaij, R., Abdelmotteleb, A. S. W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., Adlarson, P., Afsharnia, H., Agapopoulou, C., Aidala, C. A., Ajaltouni, Z., Akar, S., Akiba, K., Albicocco, P., Albrecht, J.

“…The significance for the B s 0 $$ {B}_s^0 $$ and B0 signals is larger than 10 σ. The ratio of the helicity amplitudes which governs the angular distribution of the Ds1(2536)− → D ¯ $$ \overline{D} $$ *(2007)0K− decay is determined from the data. …”
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Integrative and comparative analysis of coiled-coil based marine snail egg cases : a model for biomimetic elastomers by Guerette, Paul A., Z. Tay, Gavin, Hoon, Shawn, Loke, Jun Jie, Hermawan, Arif F., Schmitt, Clemens N. Z., Harrington, Matthew J., Masic, Admir, Karunaratne, Angelo, Gupta, Himadri S., Tan, Koh Siang, Schwaighofer, Andreas, Nowak, Christoph, Miserez, Ali

“…Comparative analysis of the primary amino acid sequences and structural predictions for all known egg case proteins suggested that while the proteins all contain sequences prone to adopt α-helical structures, the predicted location of coiled-coil domains and stutter perturbations varied within and between species. …”
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E2 protein nanocage as a pickering emulsifier and its applications by Sarker, Mridul

“…In-depth study of the molecular structure reveals an intact tertiary structure of E2 at the interface while the secondary structure results in an increase in alpha-helicity. The trends of denaturation of E2 protein in different denaturation conditions confirm the trend of structural change of E2 at the interface. …”
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Synthesis, assembly and applications of novel two-dimensional metal chalcogenide nanomaterials by Tan, Chaoliang

“…These chiral nanofibers can be further transformed into same-handed helical nanorings with a diameter of 400-800 nm via a second assembly process. …”
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