We consider a dark confining gauge theory with millicharged ultralight pions (ULP) and heavy baryons as matter candidates. The model simultaneously realizes the (strongly interacting particle or ``STUMP'') superheavy (``WIMPzilla'') paradigms, connected by confinement scale of QCD. It is realization matter, unlike conventional axions, exhibits mass splitting between charged neutral pions. ULPs ...

Ultralight bosons, as important candidates of dark matter, can condense around spinning black holes (BHs) to form long-lived ``boson clouds'' due superradiant instabilities. The boson-BH system be observed through gravitational wave detection and may become a new window find traces ultralight bosons. In this paper, we explore the effects on instabilities BHs from near-horizon microstructure. By...

Recent cosmological observations suggest the presence of small but nonzero cosmological constant Λcos ≃ (2 × 10−3 eV)4. It is an intriguing possibility that such a small cosmological constant is supplied by the potential energy density of an ultralight axion-like field (called as quintessence axion). If this axion couples to the electroweak gauge fields, its potential may be generated by the el...

Lithium-ion battery with high Li+ flux transferability is a key direction in the field of clean energy. However, small thickness, commercial polyolefin separators own low porosity to ensure sufficient thermomechanical properties, resulting tortuous and enlarged diffusion pathways that induce large overpotentials detrimental dendrite growth. This research (DOI: 10.1002/elt2.1) introduces ∼3- μm ...

We aim at developing ultralight autonomous microflyers capable of freely flying within houses or small built environments while avoiding collisions. Our latest prototype is a fixed-wing aircraft weighing a mere 10 g, flying around 1.5 m/s and carrying the necessary electronics for airspeed regulation and lateral collision avoidance. This microflyer is equipped with two tiny camera modules, two ...

The PVLAS experiment has recently claimed evidence for an axionlike particle in the milli-electron-volt mass range with a coupling to two photons that appears to be in contradiction with the negative results of the CAST experiment searching for solar axions. The simple axion interpretation of these two experimental results is therefore untenable and it has posed a challenge for theory. We propo...

Cellular metals have ranges of thermomechanical properties that suggest their implementation in ultralight structures, as well as for impact/blast amelioration systems, for heat dissipation media and in acoustic isolation. The realization of these applications requires that the properties of cellular metals be understood in terms of their manufacturing constraints and that their thermostructura...

A far cry from the bulky, uncomfortable cuff, ultralight sensor takes measurements of vital sign without wearer feeling a thing.

Cold dark matter (CDM) models predict small-scale structure in excess of observations of the cores and abundance of dwarf galaxies. These problems might be solved, and the virtues of CDM models retained, even without postulating ad hoc dark matter particle or field interactions, if the dark matter is composed of ultralight scalar particles (m approximately 10(-22) eV), initially in a (cold) Bos...