Jajjaboon baayyee salphaa ta'e jajjaboo nam-tolchee yoo ta'u maqaansaa eeroojeel(aerogel) jedhama. Rukkinni eeroojeelii isa salphaa 1.9 mg/cm3 ykn 1.9 kg/m3 (rukkina bishaanii 1/530 ta'a).