Wick and heat transport device

Abstract

A wick used for heat transport, the wick including a material containing a nanofiber and/or a two-dimensional substance represented by: MQaOb, wherein M is at least one element selected from Groups 3, 4, 5, 6, or 7, Q is at least one element selected from Groups 12, 13, 14, 15, or 16, and excluding O, a is more than 0 but not more than 2, and b is more than 0 but not more than 2.

1 . A wick comprising:
 a material containing a nanofiber and/or a two-dimensional substance represented by:
   MQ a O b    
   wherein
 M is at least one element selected from Groups 3, 4, 5, 6, or 7, 
 Q is at least one element selected from Groups 12, 13, 14, 15, or 16, excluding O, 
 a is more than 0 but not more than 2, and 
 b is more than 0 but not more than 2. 
   
     
     
         2 . The wick according to  claim 1 , wherein M is at least one element selected from Ti, V, Cr, Mo and Mn. 
     
     
         3 . The wick according to  claim 1 , wherein Q is at least one element selected from B, C, N, Si, P, and S. 
     
     
         4 . The wick according to  claim 1 , wherein the material containing the nanofiber and/or the two-dimensional substance has a peak in a range in which a diffraction angle 2θ is not less than 2° and not more than 10° in an X-ray diffraction pattern. 
     
     
         5 . The wick according to  claim 1 , wherein the material containing the nanofiber and/or the two-dimensional substance has a Raman shift with peaks at positions of 275 to 295 cm −1 , 435 to 455 cm −1  and 665 to 745 cm −1  in a Raman spectrum with a laser at a wavelength of 514 nm. 
     
     
         6 . The wick according to  claim 1 , wherein the material containing the nanofiber and/or the two-dimensional substance has a Raman shift with peaks at positions of 140 to 160 cm −1 , 275 to 295 cm −1 , 435 to 455 cm −1  and 665 to 745 cm −1  in a Raman spectrum with a laser at a wavelength of 514 nm. 
     
     
         7 . The wick according to  claim 6 , wherein an anatase type peak is present at a position of 140 to 160 cm −1 . 
     
     
         8 . The wick according to  claim 1 , wherein the material containing the nanofiber and/or the two-dimensional substance has a crystal structure of an anatase, a lepidocrocite, or a mixture thereof. 
     
     
         9 . The wick according to  claim 1 , wherein the material containing the nanofiber and/or the two-dimensional substance has a lepidocrocite crystal structure. 
     
     
         10 . The wick according to  claim 1 , wherein
 the material containing the nanofiber and/or the two-dimensional substance has a Raman shift with peaks at positions of at least 180 to 200 cm −1 , 275 to 295 cm −1 , 375 to 395 cm −1 , 435 to 455 cm −1 , and 665 to 745 cm −1  in a Raman spectrum with a laser having a wavelength of 514 nm, and   X is largest when an intensity of each of the peaks is V, X, Y, Z, and W.   
     
     
         11 . The wick according to  claim 1 , wherein the nanofiber has a cross-sectional outer dimension of not less than 1 nm and not more than 15 nm. 
     
     
         12 . The wick according to  claim 1 , wherein the wick is made of the material substantially consisting of the nanofiber and/or the two-dimensional substance. 
     
     
         13 . A heat transport device comprising:
 a housing having a space therein;   the wick according to  claim 1  in the space of the housing; and   a working fluid in space of the housing in a contactable state with the wick.   
     
     
         14 . The heat transport device according to  claim 13 , wherein the material containing the nanofiber and/or the two-dimensional substance has a peak in a range in which a diffraction angle 2θ is not less than 2° and not more than 10° in an X-ray diffraction pattern. 
     
     
         15 . The heat transport device according to  claim 13 , wherein the material containing the nanofiber and/or the two-dimensional substance has a Raman shift with peaks at positions of 275 to 295 cm −1 , 435 to 455 cm −1  and 665 to 745 cm −1  in a Raman spectrum with a laser at a wavelength of 514 nm. 
     
     
         16 . The heat transport device according to  claim 13 , wherein the material containing the nanofiber and/or the two-dimensional substance has a Raman shift with peaks at positions of 140 to 160 cm −1 , 275 to 295 cm −1 , 435 to 455 cm −1  and 665 to 745 cm −1  in a Raman spectrum with a laser at a wavelength of 514 nm. 
     
     
         17 . The heat transport device according to  claim 13 , wherein the material containing the nanofiber and/or the two-dimensional substance has a crystal structure of an anatase, a lepidocrocite, or a mixture thereof. 
     
     
         18 . The heat transport device according to  claim 13 , wherein the material containing the nanofiber and/or the two-dimensional substance has a lepidocrocite crystal structure. 
     
     
         19 . The heat transport device according to  claim 13 , wherein
 the material containing the nanofiber and/or the two-dimensional substance has a Raman shift with peaks at positions of at least 180 to 200 cm −1 , 275 to 295 cm −1 , 375 to 395 cm −1 , 435 to 455 cm −1 , and 665 to 745 cm −1  in a Raman spectrum with a laser having a wavelength of 514 nm, and   X is largest when an intensity of each of the peaks is V, X, Y, Z, and W.   
     
     
         20 . The heat transport device according to  claim 13 , wherein the nanofiber has a cross-sectional outer dimension of not less than 1 nm and not more than 15 nm.