Networks and method for producing the same

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

15/218,290

專利證號

US 9,896,562 B2

專利獲證名稱

Networks and method for producing the same

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2018/02/20

技術說明

此技術利用簡單的物理位移方式，成功製備新穎功能性奈米材料。藉由網狀結構之位移(network shifting)效果，造成物質有序結構之空間群對稱性的改變，進而呈現特殊之光學性質。首先利用可分解之嵌段共聚物(degradable block copolymers) ，進行自組裝形成雙螺旋二十四面體(double gyroid)奈米微結構，再利用模化方式(templating)建構無機之雙螺旋二十四面體，經高溫回火或移除模板等處理，可製造網狀結構之無序位移(random shifting)，而獲得具類單一螺旋二十四面體(single gyroid)光學性質之結構，成功利用仿生概念，製備類蝴蝶翅膀特性之奈米光子晶體。 we suggest a simple method for the preparation of new optical properties of a nanomaterial by network shifting to break the inversion symmetry between the two coherent networks in the DG structure, leading to a nanomaterial with changed optical properties. Inorganic networks in a polymer matrix are fabricated using hydrolyzed DG-forming PS-PLLA as a template for sol-gel reaction, giving robust inorganic frameworks for physical reallocation. The bicontinuous inorganic networks embedded in the polymer matrix are rearranged by thermal treatment at a temperature above the glass transition temperature (Tg) of the PS matrix. The loss of registration between the double networks gives a new small angle X-ray pattern that can be indexed to the I4132 SG struc- ture. After removal of the polymer matrix during calcination of the inorganic networks, nanoporous ceramics can be fabricated.

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