Abstract: Described herein is an oral sampling device, as well as methods of making and using the oral sampling device. The oral sampling device is configured to be placed inside of a human mouth to capture an analyte(s) found in bodily fluid, such as saliva, produced within the mouth. An example oral sampling device includes a body, at least a portion of which is sized to fit inside of a mouth of a human, has an outer surface, and a recess(es) defined in the outer surface to capture the analyte(s) therein. In some examples, a material of the body within the recess was subjected to a surface treatment to promote the capture of the analyte(s). In some examples, the oral sampling device includes a flavored substance disposed on at least the portion of the body that is to be received inside of a human mouth.

Abstract: A coating including a substrate and a plurality of hydrophobic silver particles disposed on the substrate. The contact angle of the coating with water at room temperature is between 152° and 162° and the resistance value of the coating is between 101 and 103?.

Abstract: The invention discloses a durable super-hydrophobic fabric and a preparation method thereof. The preparation method comprises the following steps: soaking a fabric into a mixed solution of tetraethoxysilane and hydroxy-terminated polydimethylsiloxane; taking out the fabric and then placing it into a closed container filled with a hydrochloric acid solution and above the liquid level of the hydrochloric acid solution; reacting for 0.5-2 h under the temperature of 30-60 DEG C. to give the durable super-hydrophobic fabric. The fabric prepared according to the invention has a water drop surface static contact angle of more than 150° such that the water drop is easy to roll on the surface of the fabric, and has excellent chemical stability and mechanical durability. In addition, the preparation process is simple and pollution-free.