Patent ID: 11906498
Assignee: TECHNION RESEARCH & DEVELOPMENT FOUNDATION LIMITED
Field: Measurement (Instruments)
Classification: CPC G  C  D | IPC C  D  G

Claim 12:
13. A swab comprising a fibrous matrix consisting of at least one type of electrospun microfibers and a colorimetric reactant, wherein:
the electrospun microfibers comprise a brittle shell and a core encapsulated by said brittle shell;
said core consists of a liquid composition comprising said colorimetric reactant;
said brittle shell is a polymeric shell characterized by a glass transition between 70° C. and 150° C. and is configured to break under normal stress of 0.08-1 kg/cm2 at a temperature between −55° C. and 60° C., so as to allow detection of a solid analyte; wherein said colorimetric reactant is an amine; and wherein a polymeric material of said brittle shell consist of polyacrylate.