Ọkammụta Nkà na ụzụ Florida emeritus Martin Glicksman nyocha kachasị ọhụrụ gbasara ọla na ihe nwere mmetụta maka ụlọ ọrụ ebe a na-emepụta ihe, mana o nwekwara njikọ miri emi nkeonwe na mmụọ nsọ nke ndị ọrụ ibe abụọ nwụrụ anwụ.googletag.cmd.push(ọrụ() {googletag.display('div-gpt-ad-1449240174198-2');});
Ihe omumu Gliksman "Surface Laplacian nke ike interfacial thermochemical: ọrụ ya na nhazi usoro nke siri ike na mmiri mmiri" ka ebipụtara na mbipụta November nke akwụkwọ akụkọ nkwonkwo Springer Nature Microgravity.Ihe nchoputa a nwere ike iduga nghota nke oma banyere nchikota nke ihe nkedo ígwè, na-enye ndi injinia ohere wuo injinia na-adigide ogologo oge na ugbo elu siri ike, na ịkwalite mmepụta ihe mgbakwunye.
"Mgbe ị na-eche banyere ígwè, aluminium, ọla kọpa - ihe niile dị mkpa injinia, nkedo, ịgbado ọkụ na isi metal mmepụta - ndị a bụ multi-ijeri dollar ụlọ ọrụ nke ukwuu ọha uru," Glicksman kwuru."Ị ga-aghọta na anyị na-ekwu maka ihe onwunwe, na ọbụna obere mmezi nwere ike ịba uru."
Dị nnọọ ka mmiri na-etolite kristal mgbe ọ jụrụ oyi, ihe yiri nke ahụ na-eme mgbe ọla ndị a wụrụ awụ na-esiwanye ike na-emepụta ihe nkedo.Nnyocha Gliksman na-egosi na n'oge a na-eme ka ihe ndị na-emepụta ihe na-eme ka ígwè sie ike, esemokwu dị n'elu dị n'etiti kristal na gbazee, yana mgbanwe na curvature nke kristal ka ọ na-etolite, na-eme ka ọkụ na-ekpo ọkụ ọbụna na oghere ndị edoziri.Nkwubi okwu a bụ isi dị nnọọ iche na nha Stefan nke a na-ejikarị na tiori nke nkedo, bụ nke ike ọkụ na-esi na kristal na-eto eto na-ewepụta na-adaba n'ike n'ike ya.
Gliksman chọpụtara na curvature nke kristal na-egosipụta ikike kemịkalụ ya: convex curvature na-ebelata ebe mgbaze, ebe ọkpụkpụ concave na-ebuli ya ntakịrị.A maara nke a nke ọma na thermodynamics.Ihe dị ọhụrụ ma gosipụtalarị bụ na gradient a curvature na-eme ka ọ dịkwuo ọkụ n'oge siri ike, nke a na-etinyeghị n'uche na usoro omenala nke nkedo.Tụkwasị na nke ahụ, ọkụ ndị a na-ekpo ọkụ bụ "deterministic" ma ọ bụghị ihe mgbagwoju anya, dị ka ụda ụda, nke na ụkpụrụ nwere ike ịchịkwa nke ọma n'oge usoro nkedo iji gbanwee microstructure nke alloy na imeziwanye ihe.
Gliksman kwuru, "Mgbe ịmechara microstructures kristal gbagwojuru oyi, enwere ọkụ na-ebute curvature nke enwere ike ịchịkwa," Gliksman kwuru."Ọ bụrụ na ihe mgbakwunye kemịkal na-achịkwa ma ọ bụ mmetụta anụ ahụ dị ka nrụgide ma ọ bụ oghere magnetik siri ike, mgbanwe ọkụ ndị a na nkedo alloy n'ezie nwere ike melite microstructure na n'ikpeazụ na-achịkwa nkedo alloys, ihe welded, na ọbụna ihe ndị e biri ebi 3D."
Na mgbakwunye na uru sayensị ya, ọmụmụ ihe ahụ dị ezigbo mkpa nye Glixman, ekele n'ọtụtụ akụkụ maka nkwado enyemaka nke onye ọrụ ibe ya nwụrụ.Otu n'ime ndị ọrụ ibe dị otú ahụ bụ Paul Steen, prọfesọ nke injinịa mmiri na Mahadum Cornell, onye nwụrụ n'afọ gara aga.Afọ ole na ole gara aga, Steen nyeere Glicksman aka na nyocha ya na ihe ndị dị na microgravity site na iji igwe ụgbọ ala mmiri na nyocha ihe.Springer Nature raara mbipụta nke Microgravity nke November nye Steen wee kpọtụrụ Gliksman ka o dee akụkọ sayensị gbasara ọmụmụ ihe na nsọpụrụ ya.
“Nke ahụ kpaliri m iwekọta ihe na-akpali mmasị Pọl ga-enwe mmasị karịsịa.N'ezie, ọtụtụ ndị na-agụ akụkọ nyocha a nwekwara mmasị na mpaghara Paul nyere aka, ya bụ interface thermodynamics, "Gliksman kwuru.
Onye ọrụ ibe ọzọ kpaliri Gliksman ide akụkọ ahụ bụ Semyon Koksal, prọfesọ mgbakọ na mwepụ, onye isi ngalaba na osote onye isi oche nke agụmakwụkwọ na Florida Institute of Technology, onye nwụrụ na Machị 2020. Gliksman kọwara ya dị ka onye nwere obiọma, onye nwere ọgụgụ isi nke nwere obi ụtọ. ịgwa ya okwu, na-achọpụta na o nyeere ya aka itinye ihe ọmụma mgbakọ na mwepụ ya na nyocha ya.
Mụ na ya bụ ezigbo enyi, o nwekwara mmasị n'ọrụ m.Semyon nyeere m aka mgbe m chepụtara nha anya dị iche iche iji kọwa oke ọkụ nke curvature kpatara," Gliksman kwuru."Anyị na-etinye oge dị ukwuu na-ekwurịta ihe nhata m na otu esi emepụta ha, adịghị ike ha, wdg. Ọ bụ naanị ya bụ onye m na-ajụ ase na ọ na-enye aka nke ukwuu n'ichepụta echiche mgbakọ na mwepụ na inyere m aka ime nke ọma."
Ozi ndị ọzọ: Martin E. Gliksman et al., Surface Laplacian nke ike interfacial thermochemical: ọrụ ya na nhazi nke ọnọdụ mmiri siri ike, npj Microgravity (2021).DOI: 10.1038/s41526-021-00168-2
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