Criteria for identifying and evaluating locations that could potentially host the Cosmic Explorer observatories.

Cosmic Explorer is a next-generation ground-based gravitational-wave observatory that is being designed in the 2020s and is envisioned to begin operations in the 2030s together with the Einstein Telescope in Europe. The Cosmic Explorer concept currently consists of two widely separated L-shaped observatories in the United States, one with 40 km-long arms and the other with 20 km-long arms. This order of magnitude increase in scale with respect to the LIGO-Virgo-KAGRA observatories will, together with technological improvements, deliver an order of magnitude greater astronomical reach, allowing access to gravitational waves from remnants of the first stars and opening a wide discovery aperture to the novel and unknown.

Nanostructure and Photovoltaic Potential of Plasmonic Nanofibrous Active Layers.

Nanofibrous active layers offer hierarchical control over molecular structure, and the size and distribution of electron donor:acceptor domains, beyond conventional organic photovoltaic architectures. This structure is created by forming donor pathways via electrospinning nanofibers of semiconducting polymer, then infiltrating with an electron acceptor. Electrospinning induces chain and crystallite alignment, resulting in enhanced light-harvesting and charge transport.

Surface Lattice Resonance Lasers with Epitaxial InP Gain Medium.

Surface lattice resonance (SLR) lasers, where the gain is supplied by a thin-film active material and the feedback comes from multiple scattering by plasmonic nanoparticles, have shown both low threshold lasing and tunability of the angular and spectral emission at room temperature. However, typically used materials such as organic dyes and QD films suffer from photodegradation, which hampers practical applications. Here, we demonstrate photostable single-mode lasing of SLR modes sustained in an epitaxial solid-state InP slab waveguide.

Squeezing the quantum noise of a gravitational-wave detector below the standard quantum limit.

The Heisenberg uncertainty principle dictates that the position and momentum of an object cannot be simultaneously measured with arbitrary precision, giving rise to an apparent limitation known as the standard quantum limit (SQL). Gravitational-wave detectors use photons to continuously measure the positions of freely falling mirrors and so are affected by the SQL. We investigated the performance of the Laser Interferometer Gravitational-Wave Observatory (LIGO) after the experimental realization of frequency-dependent squeezing designed to surpass the SQL.

Building a strong public health nursing workforce in Canada: A continuing education solution.

Building a strong public health nursing (PHN) work-force capable of advancing population health and reducing inequities is critical. Though undergraduate nursing education is expected to provide introductory knowledge and practice of PHN in Canada, this is not always sufficient to adequately prepare nursing graduates for the complexity of PHN practice. To be practice ready for the full scope of PHN roles and interventions, new baccalaureate nurses and new registered nurses in public health are required to apply PHN competencies, theory, and knowledge of nursing and public health sciences, and to practice within the mandates of provincial and territorial public health legislation.