Novel Two-dimensional Carbon Allotrope with Strong Electronic Anisotropy

Two novel two-dimensional carbon allotropes comprised of octagons and pentagons are proposed based on the first-principles calculations. The two carbon allotropes, named OPG-L and OPG-Z, are found to have distinct properties. OPG-L is metallic, while OPG-Z is a gapless semimetal. Remarkably, OPG-Z exhibits pronounced electronic anisotropy with highly anisotropic Dirac points at the Fermi level. A tight-binding model is suggested to describe the low-energy quasiparticles, which clarifies the origin of the anisotropic Dirac points. Such an anisotropic electronic characteristic of OPG-Z is expected to have wide implications in nano-electronics.Comment: 6 pages, 5 figures (accepted by Physical Review B

"Long Term Loans and Investment in Japan: An Empirical Analysis Based on the Panel Data of Japanese Firms"

The purpose of this paper is to investigate whether that the policy-based allocation of long-term funds played an important role in promoting the high economic growth in post-war Japan. Using the panel data functions of Japanese firms, we estimate Tobinfs Q investment functions in two different sample periods | 1972-84 and 1985-96. In 1972-84, we find that the long-term loan ratio had an additional positive effect on investment. In particular, the result holds true regardless of the size of corporate cash flows or the type of corporate groupings. However, in 1985-96, we cannot find that a higher ratio of long-term loans increased the Japanese firmfs investment. The result indicates that the size of long-term loans had a great influence on the firmfs investment only before the financial liberalization in Japan.

Stacking tunable interlayer magnetism in bilayer CrI3

Diverse interlayer tunability of physical properties of two-dimensional layers mostly lies in the covalent-like quasi-bonding that is significant in electronic structures but rather weak for energetics. Such characteristics result in various stacking orders that are energetically comparable but may significantly differ in terms of electronic structures, e.g. magnetism. Inspired by several recent experiments showing interlayer anti-ferromagnetically coupled CrI3 bilayers, we carried out first-principles calculations for CrI3 bilayers. We found that the anti-ferromagnetic coupling results from a new stacking order with the C2/m space group symmetry, rather than the graphene-like one with R3 as previously believed. Moreover, we demonstrated that the intra- and inter-layer couplings in CrI3 bilayer are governed by two different mechanisms, namely ferromagnetic super-exchange and direct-exchange interactions, which are largely decoupled because of their significant difference in strength at the strong- and weak-interaction limits. This allows the much weaker interlayer magnetic coupling to be more feasibly tuned by stacking orders solely. Given the fact that interlayer magnetic properties can be altered by changing crystal structure with different stacking orders, our work opens a new paradigm for tuning interlayer magnetic properties with the freedom of stacking order in two dimensional layered materials

Telerehabilitation In The Treatment Of Frozen Shoulder: A Case Report

Background and objectives: Frozen shoulder is a common musculoskeletal condition. Telerehabilitation has seen emerging use in a variety of conditions. This case report aims to investigate the feasibility of adopting telerehabilitation in treating frozen shoulder. Case presentation: A 43-year old female presented with frozen shoulder of insidious onset. She underwent four sessions of physiotherapy. Sessions two and three were telerehabilitation sessions; the initial and final sessions were conducted in-person. Results: The subject was compliant with all exercises prescribed during her rehabilitation and achieved all rehabilitation goals in four sessions. She was then discharged from physiotherapy. Conclusion: Telerehabilitation is feasible in treating frozen shoulder. One barrier to implementation of telerehabilitation includes the lack of technical skills and knowledge despite the high prevalence of technology in today’s society. Telerehabilitation increases accessibility and ease of rehabilitation. Telerehabilitation can be considered for segments of the population that are most inclined to use technology