Physics Today

Physics Today is the official magazine of the American Institute of Physics, founded in 1948. It is distributed to members of ten different physics societies, including the American Physical Society. While it offers scientifically sound and current information, it does not function as a traditional research journal for sharing new findings. Instead, it serves as a hybrid publication that keeps readers updated on significant advancements through expert overview articles, concise reviews written by its own staff, and discussions on current issues affecting the scientific community, such as science policy. For the latest research results, the physics field primarily relies on the Physical Review series of journals published by the American Physical Society and Applied Physics Letters from the American Institute of Physics.

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Articles

Hippies, Bell tests, and a career studying quantum entanglement

1 week ago | pubs.aip.org | David Kaiser |Lindsay McKenzie |Peter Turchi |Peter W. Milonni

My fascination with quantum entanglement began in high school, when I stumbled upon a cheap paperback of physicist Fritjof Capra’s The Tao of Physics.1 The book had first been published in 1975; by the time I found the copy in a used bookstore about a decade later, it had long since become an international bestseller. I was immediately captivated by the book’s discussion of bizarre-sounding features of quantum theory and the subtle dance of subatomic particles.
Physics, astronomy graduate admissions in the US expected to shrink amid funding uncertainty

1 month ago | pubs.aip.org | Jenessa Duncombe |Johanna Miller |Emily Blevins

The predicted decrease is larger than pandemic-era disruptions, according to a survey of university departments. DOI:https://doi.org/10.1063/pt.kqzl.oatzContent License:FreeViewEISSN:1945-0699 Because of recent federal cuts to science, about 600 fewer first-year physics and astronomy graduate students are expected to enroll in the US this fall compared with the fall 2024 semester.
Kirchhoff's law violation within the main solar wavelength range

Dec 10, 2024 | pubs.aip.org | Ginzton Laboratory |Sebastian Schulz |Christina M. Rost

Recently, nonreciprocal structures that violate Kirchhoff's law of thermal radiation have attracted considerable interest for their potential in solar energy harvesting applications. However, previous research has primarily focused on mid-infrared wavelengths rather than on the main solar wavelength range where sunlight intensity is concentrated.
Navigating the challenges: A comprehensive review of biomedical waste management practices

Dec 10, 2024 | pubs.aip.org | Apu Kowsar |Yu. N. Melikova

Biomedical waste management is a critical public health and environmental safety nexus, demanding comprehensive understanding and action. In this review article, we navigate the multifaceted landscape of biomedical waste, delving into its types, challenges, regulatory frameworks, and the role of healthcare personnel. The significance of proper management is underscored through evidence of environmental contamination and health risks resulting from inadequate practices.
The impact of P-type doping level and profile on performance of InAs quantum dot lasers

Dec 10, 2024 | pubs.aip.org | Optoelectronics Engineering |Grzegorz Greczynski |Cyrus E. Dreyer

In light of the exponential growth in global data throughput, it is important that modern communication systems are realized by faster, cheaper, and more efficient data transmission methods.1,2 Si-based photonic integrated circuits (PICs) are good candidates to meet these requirements, offering high bandwidth for data transmission while achieving economic efficiency.3–10 However, the advancement of Si-based on-chip light sources, a pivotal component of Si-based PICs, has been hindered by the...
Electric field management in β-Ga2O3 vertical Schottky diodes using high-k bismuth zinc niobium oxide

Dec 10, 2024 | pubs.aip.org | Sebastian Schulz |Christina M. Rost

In this work, we have integrated bismuth zinc niobium oxide (BZN), a high-k dielectric material, in metal–insulator–semiconductor (MIS) and field-plated metal–semiconductor (FP-MS) Schottky barrier diodes on -Ga O . This increases the breakdown voltage (⁠ ⁠) from 300 to 600 V by redistributing the electric fields, leveraging the high permittivity of BZN (k 210).
Impact of reduced spectral resolution on temporal-coherence-based source segregation

Dec 10, 2024 | pubs.aip.org | Carnegie Mellon |Maïa Ponsonnet |Pierre-Amaury Grumiaux |Wesley Grantham

Hearing-impaired listeners struggle to understand speech in noise, even when using cochlear implants (CIs) or hearing aids. Successful listening in noisy environments depends on the brain's ability to organize a mixture of sound sources into distinct perceptual streams (i.e., source segregation). In normal-hearing listeners, temporal coherence of sound fluctuations across frequency channels supports this process by promoting grouping of elements belonging to a single acoustic source.
The promising 2D monolayers supported single f-electrons atom (Ce, Th, and U) catalysts in the ammonia synthesis via electrochemical nitrogen reduction reaction

Dec 10, 2024 | pubs.aip.org | Sebastian Schulz |Christina M. Rost

Citation Xiujuan ChengXuying ZhouMingyang ShiKunyang ChengGang JiangJiguang Du; The promising 2D monolayers supported single f-electrons atom (Ce, Th, and U) catalysts in the ammonia synthesis via electrochemical nitrogen reduction reaction. Appl. Phys. Lett. 9 December 2024; 125 (24): 243905. https://doi.org/10.1063/5.0239532 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex
Nucleation study of AlN crystal growth on 6H-SiC substrates using the MOCVD

Dec 10, 2024 | pubs.aip.org | Sebastian Schulz |Christina M. Rost

Topics Molecular dynamics, Crystallographic defects, Crystal structure, Crystallography, Thin film growth, Chemical vapor deposition, Chemical bonding Over the past few decades, III-nitrides have garnered widespread attention due to their outstanding optoelectronic and physical properties.1–3 Attribute to their tunable bandgap (3.4–6.2 eV),4 aluminum nitride (AlN) is frequently used as a buffer layer for ultraviolet light-emitting diodes (UV LEDs)5,6 and high electron mobility transistors...
Dielectric properties of nanoconfined water

Dec 10, 2024 | pubs.aip.org | Jinzhe Zeng |Miguel Jorge |Philipp Pracht

The dielectric function of a dipolar liquid exhibits a strong wavenumber dependence in the bulk homogeneous state. Such a behavior seems to suggest the possibility of a strong system size dependence of the dielectric constant (DC) of a nanoconfined liquid, although details have been revealed only recently.