4 research outputs found
Development of an LCD-Based Visual Field System
Background: The present study investigated the diagnostic effectiveness of an LCD-based visual field testing system (LVF) in comparison with the standard automated perimetry Humphrey Field Analyzer II-750i (HFA). Methods: A randomized controlled crossover study was conducted with 202 normal and 128 glaucomatous eyes using both LVF and HFA. The visual field testing systems were compared in terms of mean deviation (MD), pattern standard deviation (PSD), and area under the receiver operating characteristics curve (AUC) of MD and PSD differentiating the normal and glaucomatous eyes. Results: Significant correlations were found between MD measurements from LVF and those from HFA for normal eyes (r = 0.342) and glaucomatous eyes (r = 0.796); slightly higher significant correlations were identified between PSD measurements from LVF and those from HFA for normal eyes (r = 0.363) and glaucomatous eyes (r = 0.828). Furthermore, high AUCs of MD were found as 0.786 for LVF and 0.868 for HFA and AUCs of PSD as 0.913 for LVF and 0.932 for HFA. Conclusion: The comparison results of the present study support the competence of LVF compared with HFA in visual field testing for early detection of glaucoma.11Ysciescopuskc
Three-Dimensionally Printed Interconnects for Smart Contact Lenses
One of the ultimate wearable heath-monitoring
gears, smart contact
lens, requires miniaturized devices compounded and interconnected
with each other on the lens for a successful system functioning. Because
of the different device thickness, the interconnect patterns need
to be three-dimensional (3D) conforming the steps given by the diversified
on-lens devices. Also, the patterns should be low-temperature processed
and flexible considering the mechanical and thermal property of the
lens material. We demonstrate the 3D interconnects electrosprayed
on a contact lens platform with Ag–Ag nanowire (NWs) composite
ink conforming the steps. Quantitative and informative analysis on
the interconnects is presented. Thick polyimide film (12.5 μm)
in C-shape is employed as a primary substrate to form the 3D patterns
that is to be transferred onto the contact lens. The AgNWs act as
frames to support the Ag ion inks printed across the steps. The resultant
interconnects realized with the Ag/AgNW composite ink with 0.3 wt
% AgNW have the sheet resistance (<i>R</i><sub>s</sub>)
of 0.396 Ω/□ spanning the height difference of 300 μm.
AgNWs also provide durability to the patterns against crack formation
and propagation under significant device deformation. Unlike pure
Ag pattern which shows the <i>R</i><sub>s</sub> changes
of 86.1% in the bending condition, the optimally formulated composite
pattern shows the suppressed <i>R</i><sub>s</sub> change
of only 15.2% with a bending radius of 3 mm
Reversible ammonia uptake at room temperature in a robust and tunable metal-organic framework
Ammonia is useful for the production of fertilizers and chemicals for modern technology, but its high toxicity and corrosiveness are harmful to the environment and human health. Here, we report the recyclable and tunable ammonia adsorption using a robust imidazolium-based MOF (JCM-1) that uptakes 5.7 mmol g(-1) of NH3 at 298 K reversibly without structural deformation. Furthermore, a simple substitution of NO3- with Cl- in a post-synthetic manner leads to an increase in the NH3 uptake capacity of JCM-1(Cl-) up to 7.2 mmol g(-1).11Nsciescopu