Maternal health applications: Qualitative findings of user needs.

Objective: This study sought to understand the current experiences and subsequent needs of digital maternal health application users based on an interdisciplinary analysis of features currently available in the digital marketplace (including mobile applications and mobile-friendly websites).

Methods: Following secondary analysis of previously collected interview and focus group data, we used qualitative thematic analysis to observe recurring themes within current maternal health applications and prospective augmentation of related technology for future development.

Results: Study findings suggested tailored features would best serve the target population, and eleven unique themes comprising additions and improvements to maternal health applications emerged.

Voltage-induced modulation of interfacial ionic liquids measured using surface plasmon resonant grating nanostructures.

We have used surface plasmon resonant metal gratings to induce and probe the dielectric response (i.e., electro-optic modulation) of ionic liquids (ILs) at electrode interfaces.

Digital self-aligned focusing schlieren.

In this Letter, a digital self-aligned focusing schlieren (D-SAFS) system is introduced. This system uses a digital transparent micro liquid crystal display (μLCD), in combination with a linear polarizer, to act on the linear polarization state of light transmitted in both the forward and reverse directions, essentially acting as both the source and cutoff grids. The use of the μLCD display allows for on-the-fly changes to the cutoff pattern type, spatial frequency, and orientation.

First Measurement of the Nuclear-Recoil Ionization Yield in Silicon at 100 eV.

We measured the nuclear-recoil ionization yield in silicon with a cryogenic phonon-sensitive gram-scale detector. Neutrons from a monoenergetic beam scatter off of the silicon nuclei at angles corresponding to energy depositions from 4 keV down to 100 eV, the lowest energy probed so far. The results show no sign of an ionization production threshold above 100 eV.