Safety pins are everywhere—sewing kits, first-aid boxes, diaper bags—and chances are, you have a few lurking in a junk drawer or buried at the bottom of your purse right now. Fun fact: In high school, ...

Abstract: In this article, we propose a rectangular hollow core Photonic Crystal Fiber (PCF) sensor for high detection of women’s reproductive hormones (progesterone and estradiol) in the blood sample ...