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An error occurred while processing the template.
The following has evaluated to null or missing:
==> orderedEntries[count]  [in template "20116#20160#68089" at line 135, column 68]

----
Tip: It's the final [] step that caused this error, not those before it.
----
Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----

----
FTL stack trace ("~" means nesting-related):
	- Failed at: ${(orderedEntries[count].getName())[0...  [in template "20116#20160#68089" at line 135, column 65]
----
1<#assign uniqueId = randomNamespace> 
2 
3<div class="m5-container"> 
4 
5<#if entries?has_content> 
6    <#assign orderedEntries = entries?sort_by("name")> 
7    <#assign pageNum = orderedEntries?size / 3.0> 
8    <#assign letter1 = (orderedEntries[pageNum?round - 1].getName())[0]?upper_case> 
9    <#assign letter2 = (orderedEntries[(pageNum * 2)?round  - 1].getName())[0]?upper_case> 
10 
11 
12     
13    <div id="M8_navpanel-${uniqueId}"> 
14        <#assign count = 0> 
15        <h4 class="header-${uniqueId} toggler-header-collapsed">A-${letter1}</h4> 
16        <div class="content-${uniqueId} toggler-content-collapsed"> 
17        <#assign k = 0> 
18         
19    	<#list orderedEntries as navigationEntry> 
20    		<#if k == 1 && (navigationEntry.getName())[0]?upper_case != letter1> 
21    		    <#break> 
22    		</#if> 
23    		<#assign count++> 
24    		<#if (navigationEntry.getName())[0]?upper_case == letter1> 
25    		    <#assign k = 1> 
26    		</#if> 
27    	</#list> 
28    		 
29        <div class="m5-menu"> 
30            <#assign x = count / 3.0> 
31             
32            <div  class="m5-column"> 
33        	<#list orderedEntries as navigationE> 
34        		<div class="m5-link"> 
35        		<a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
36        		</div> 
37        		<#if navigationE?counter == x?ceiling> 
38                    <#break> 
39                </#if> 
40        	</#list> 
41        	</div> 
42        	 
43        	<#assign x1 = (x * 2)?ceiling> 
44        	 
45        	<div  class="m5-column"> 
46        	<#list orderedEntries as navigationE> 
47        		<#if navigationE?counter gt x?ceiling> 
48                    <div class="m5-link"> 
49        		    <a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
50        		    </div> 
51                    <#if navigationE?counter == x1?ceiling> 
52                        <#break> 
53                    </#if> 
54                </#if> 
55        	</#list> 
56        	</div> 
57        	 
58        	<div  class="m5-column"> 
59            <#list orderedEntries as navigationE> 
60        		<#if navigationE?counter gt x1?ceiling> 
61                    <div class="m5-link"> 
62        		    <a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
63        		    </div> 
64                </#if> 
65                <#if navigationE?counter == count> 
66                    <#break> 
67            	</#if>	 
68        	</#list> 
69        	</div> 
70        </div> 
71    	</div> 
72    	 
73    	 
74    	<h4 class="header-${uniqueId} toggler-header-collapsed">${(orderedEntries[count].getName())[0]?upper_case}-${letter2}</h4> 
75        <div class="content-${uniqueId} toggler-content-collapsed"> 
76        <#assign c = count> 
77        <#assign k = 0> 
78    	<#list orderedEntries[count..] as navigationEntry> 
79    		<#if k == 1 && (navigationEntry.getName())[0]?upper_case != letter2> 
80    		    <#break> 
81    		</#if> 
82    		<#assign count++> 
83    		<#if (navigationEntry.getName())[0]?upper_case == letter2> 
84    		    <#assign k = 1> 
85    		</#if> 
86    	</#list> 
87    	 
88    	<div class="m5-menu"> 
89            <#assign x = (count - c) / 3.0> 
90             
91             
92            <div  class="m5-column"> 
93        	<#list orderedEntries as navigationE> 
94        	    <#if navigationE?counter gt c> 
95            		<div class="m5-link"> 
96            		<a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
97            		</div> 
98            		<#if navigationE?counter == (x?ceiling + c)> 
99                        <#break> 
100                    </#if> 
101                </#if> 
102        	</#list> 
103        	</div> 
104        	 
105        	<#assign x1 = ((x * 2)?ceiling + c)> 
106        	 
107        	<div  class="m5-column"> 
108        	<#list orderedEntries as navigationE> 
109        		<#if navigationE?counter gt (x?ceiling + c)> 
110                    <div class="m5-link"> 
111        		    <a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
112        		    </div> 
113                    <#if navigationE?counter == x1?ceiling> 
114                        <#break> 
115                    </#if> 
116                </#if> 
117        	</#list> 
118        	</div> 
119        	 
120        	<div class="m5-column"> 
121            <#list orderedEntries as navigationE> 
122        		<#if navigationE?counter gt x1?ceiling> 
123                    <div class="m5-link"> 
124        		    <a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
125        		    </div> 
126                </#if> 
127                <#if navigationE?counter == count> 
128                    <#break> 
129            	</#if>	 
130        	</#list> 
131        	</div> 
132        </div> 
133    	</div> 
134    	 
135    	<h4 class="header-${uniqueId} toggler-header-collapsed">${(orderedEntries[count].getName())[0]?upper_case}-Z</h4> 
136        <div class="content-${uniqueId} toggler-content-collapsed"> 
137        <#assign k = 0> 
138        <#assign c = count> 
139    	<#list orderedEntries[count..] as navigationEntry> 
140    		<#if k == 1 && (navigationEntry.getName())[0]?upper_case != letter1> 
141    		    <#break> 
142    		</#if> 
143    		<#assign count++> 
144    		<#if (navigationEntry.getName())[0]?upper_case == letter1> 
145    		    <#assign k = 1> 
146    		</#if> 
147    	</#list> 
148    	 
149    	<div class="m5-menu"> 
150            <#assign x = (count - c) / 3.0> 
151             
152             
153            <div  class="m5-column"> 
154        	<#list orderedEntries as navigationE> 
155        	    <#if navigationE?counter gt c> 
156            		<div class="m5-link"> 
157            		<a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
158            		</div> 
159            		<#if navigationE?counter == (x?ceiling + c)> 
160                        <#break> 
161                    </#if> 
162                </#if> 
163        	</#list> 
164        	</div> 
165        	 
166        	<#assign x1 = ((x * 2)?ceiling + c)> 
167        	 
168        	<div  class="m5-column"> 
169        	<#list orderedEntries as navigationE> 
170        		<#if navigationE?counter gt (x?ceiling + c)> 
171                    <div class="m5-link"> 
172        		    <a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
173        		    </div> 
174                    <#if navigationE?counter == x1?ceiling> 
175                        <#break> 
176                    </#if> 
177                </#if> 
178        	</#list> 
179        	</div> 
180        	 
181        	<div  class="m5-column"> 
182            <#list orderedEntries as navigationE> 
183        		<#if navigationE?counter gt x1?ceiling> 
184                    <div class="m5-link"> 
185        		    <a href="${themeDisplay.getPortalURL()}${themeDisplay.getScopeGroup().getPathFriendlyURL(false,themeDisplay)}${layout.getGroup().friendlyURL}${navigationE.layout.friendlyURL}">${navigationE.getName()}</a> 
186        		    </div> 
187                </#if> 
188                <#if navigationE?counter == count> 
189                    <#break> 
190            	</#if>	 
191        	</#list> 
192        	</div> 
193        </div> 
194    	</div> 
195	</div> 
196</#if> 
197 
198</div> 
199 
200<script> 
201AUI().use( 
202  'aui-toggler', 
203  function(A) { 
204    new A.TogglerDelegate( 
205
206        animated: true, 
207        closeAllOnExpand: true, 
208        container: '#M8_navpanel-${uniqueId}', 
209        content: '.content-${uniqueId}', 
210        expanded: false, 
211        header: '.header-${uniqueId}', 
212        transition: { 
213          duration: 0.2, 
214          easing: 'cubic-bezier(0, 0.1, 0, 1)' 
215
216
217    ); 
218
219); 
220</script> 

Semiconductor

SIAD semiconductor process gases are used throughout every stage of manufacture - from growing single crystal silicon to each wafer fabrication process step: oxidation, chemical vapour deposition, sputtering, resist, etch, thermal diffusion and ion implantation.

Gas Applications in Semiconductor Manufacturing
A reliable supply of high purity gases is critical to advanced semiconductor manufacturing. Producing an integrated circuit requires over 30 different process gases for etching, deposition, oxidation, doping, and inerting applications. The range of gases used is broader than in virtually any other industry. Trace impurities at the parts-per-million, parts-per- billion, and even parts-per-trillion levels must be measured and eliminated.

Semiconductor process gases are classified as:

  • silicon precursors
  • dopants
  • etchants
  • atmospherics
  • reactants.

These include nitrogen and oxygen, produced on-site by the separation of air or delivered as cryogenic liquid, argon, delivered as cryogenic liquid, and hydrogen, delivered as a compressed gas.
Nitrogen is used widely in many processes to provide an inert environment or to purge reactive gases after the completion of a process.
Oxygen is used for the oxidation of silicon, one of the most critical processes in all of semiconductor manufacturing.
Argon is used to provide an inert environment for sputter deposition of metals (where even nitrogen is too reactive and leads to the formation of metal nitrides).
Hydrogen, delivered in bulk as a cryogenic liquid or produced on-site, is used to provide a reducing environment for annealing metal films.
SIAD's full line of semiconductor process gases ensures reliability and consistency no matter where a wafer production site is located.