Comment on "Electron transport through correlated molecules computed using the time-independent Wigner function: Two critical tests"

The many electron correlated scattering (MECS) approach to quantum electronic transport was investigated in the linear response regime [I. Baldea and H. Koeppel, Phys. Rev. B. 78, 115315 (2008)]. The authors suggest, based on numerical calculations, that the manner in which the method imposes boundary conditions is unable to reproduce the well-known phenomena of conductance quantization. We introduce an analytical model and demonstrate that conductance quantization is correctly obtained using open system boundary conditions within the MECS approach.Comment: 18 pages, 4 figures. Physical Review B, to appea

Appointment Notes/On Unwanted Help and the Misuse of Empathy

The pandemic has shed light on a number of injustices. In this context, I revisit a comic I wrote to sort through an experience of ableism in academia. I encourage readers to think deeply about what teachers mean when we offer help as members of a caring profession, and consider some ways that the misuse of empathy can impede impactful help. I end with a call for systemic organization and resources to support workers in caring professions

PREVIEW—Asarco LLC v. Atlantic Richfield Company: Allocation of Remediation Costs under CERCLA

The Ninth Circuit Court of Appeals originally scheduled oral arguments in this matter for Tuesday, March 31, 2020, at 9:00 a.m. in the William K. Nakamura Courthouse in Seattle, Washington. Due to the COVID-19 pandemic, the Ninth Circuit has postponed oral arguments in this matter. While still subject to change due to the pandemic, the court has rescheduled oral arguments for April 27, 2020, at 9:00 a.m. in Courtroom 2 of the William K. Nakamura Courthouse in Seattle, Washington. Shannon Wells Stevenson will likely appear on behalf of the Appellant. Gregory Evans will likely appear on behalf of the Appellee

PREVIEW—Asarco LLC v. Atlantic Richfield Company: Allocation of Remediation Costs under CERCLA

The Ninth Circuit Court of Appeals originally scheduled oral arguments in this matter for Tuesday, March 31, 2020, at 9:00 a.m. in the William K. Nakamura Courthouse in Seattle, Washington. Due to the COVID-19 pandemic, the Ninth Circuit has postponed oral arguments in this matter. While still subject to change due to the pandemic, the court has rescheduled oral arguments for April 27, 2020, at 9:00 a.m. in Courtroom 2 of the William K. Nakamura Courthouse in Seattle, Washington. Shannon Wells Stevenson will likely appear on behalf of the Appellant. Gregory Evans will likely appear on behalf of the Appellee

Virginia Uranium, Inc. v. Warren

The Supreme Court of the United States recently ruled that the Atomic Energy Act did not preempt a Virginia law prohibiting uranium mining in the Commonwealth. The Court held that although the Act delegated substantial power over the nuclear life cycle to the Nuclear Regulatory Commission, it offered no indication that Congress sought to strip states of their traditional power to regulate mining on private lands within their borders

Highly Qualified for Successful Teaching: Characteristics Every Teacher Should Possess

This article examines the reflections of university students regarding the characteristics of their favorite teachers from whom they were able to learn. Data collected from the students indicates that there are twelve common characteristics that emerged as central to what students conceptualize as good teaching. Those twelve characteristics connect to the theme of caring for students, both academically and personally and strengthen recent indicators for “highly qualified” teachers. In reviewing effective teacher research, there is a strong link between what students characterize as good teaching and what the research reports as the traits of effective teachers. Awareness of these traits can help preservice teachers and inservice teachers develop qualities that are associated with effective teachers

La mano del copista: Diego Martínez de Mora interpreta a Calderón

El objetivo de este artículo es considerar, en la cadena de manos y ojos que intervienen en un texto calderoniano, a un copista particular: Diego Martínez de Mora y de esta manera resolver qué uso se debe hacer de los manuscritos de Calderón transmitidos por este copista, para comprender la relación entre este “tratante de comedias”, las compañías teatrales y Calderón

In situ characterization of vertically oriented carbon nanofibers for three-dimensional nano-electro-mechanical device applications

We have performed mechanical and electrical characterization of individual as-grown, vertically oriented carbon nanofibers (CNFs) using in situ techniques, where such high-aspect-ratio, nanoscale structures are of interest for three-dimensional (3D) electronics, in particular 3D nano-electro-mechanical-systems (NEMS). Nanoindentation and uniaxial compression tests conducted in an in situ nanomechanical instrument, SEMentor, suggest that the CNFs undergo severe bending prior to fracture, which always occurs close to the bottom rather than at the substrate–tube interface, suggesting that the CNFs are well adhered to the substrate. This is also consistent with bending tests on individual tubes which indicated that bending angles as large as ~70° could be accommodated elastically. In situ electrical transport measurements revealed that the CNFs grown on refractory metallic nitride buffer layers were conducting via the sidewalls, whereas those synthesized directly on Si were electrically unsuitable for low-voltage dc NEMS applications. Electrostatic actuation was also demonstrated with a nanoprobe in close proximity to a single CNF and suggests that such structures are attractive for nonvolatile memory applications. Since the magnitude of the actuation voltage is intimately dictated by the physical characteristics of the CNFs, such as diameter and length, we also addressed the ability to tune these parameters, to some extent, by adjusting the plasma-enhanced chemical vapor deposition growth parameters with this bottom-up synthesis approach